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DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

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HOMESERVICE MANUALSPONTIAC1983GRAND PRIX BASE, 5.0 HREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEEMISSIONSEMISSION APPLICATIONS - 1966-83 - EXCEPT DIESELEMISSION APPLICATIONS

1983 Pontiac Grand Prix Base, 5.0 H

Emission Applications

1983 Pontiac Grand Prix Base, 5.0 HSECTION Emission Applications

1966 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

3.7L (225") 6-Cyl. 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.0L (300") V8 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.6L (340") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

6.6L (424") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

7.0L (425") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 3 vented (Federal); Type 4 closed (Calif.).

⁽³⁾	California only.

⁽⁴⁾

A/T only.

1966 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

7.0L (429") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed (California); Type 1 vented (Federal).

⁽³⁾	California only.

1966 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.4L (327") V8 4-Bbl.

PCV, ⁽²⁾ AIS

...

7.0L (427") V8 4-Bbl.

PCV

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	California emissions only.

1966 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

2.5L (153") 4-Cyl. 1-Bbl.

⁽²⁾ PCV

...

2.7L (164") 6-Cyl. 2x1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

2.7L (164") 6-Cyl. 4x1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

3.2L (194") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

3.8L (230") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

4.6L (283") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.4L (327") V8 4-Bbl.

⁽²⁾ PCV, SPK, ⁽³⁾ AIS

...

6.5L (396") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

7.0L (427") V8 4-Bbl.

⁽²⁾ PCV, SPK, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 1 vented; Type 4 closed.

⁽³⁾	California only.

1966 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.4L (33") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

7.0L (425") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	California only.

1966 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

3.8L (230") 6-Cyl. 1-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ AIS

...

3.8L (230") 6-Cyl. 4-Bbl.

⁽²⁾ ⁽³⁾ PCV

...

5.3L (326") V8 2-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ AIS

...

5.3L (326") V8 4-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ AIS

...

6.4L (389") V8 2-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ AIS

...

6.4L (389") V8 3x2-Bbl.

⁽²⁾ ⁽³⁾ PCV

...

6.4L (389") V8 4-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ AIS

...

6.9L (421") V8 3x2-Bbl.

⁽²⁾ ⁽³⁾ PCV

...

6.9L (421") V8 4-Bbl.

⁽²⁾ ⁽³⁾ PCV

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 3 vented (Federal).

⁽³⁾	Type 4 closed.

⁽⁴⁾	California A/T only.

1966 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Models (Carb.) ⁽²⁾

PCV, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽³⁾	Light duty California only (6000 GVWR or less).

1966 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1967 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

3.7L (225") 6-Cyl. 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.0L (300") V8 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.6L (340") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

6.6L (424") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

7.0L (425") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 3 vented (Federal); Type 4 closed (Calif.).

⁽³⁾	California only.

⁽⁴⁾

A/T only.

1967 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

7.0L (429") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed (California); Type 1 vented (Federal).

⁽³⁾	California only.

1967 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.4L (327") V8 4-Bbl.

PCV, ⁽²⁾ AIS

...

7.0L (427") V8 3x2-Bbl.

PCV, ⁽³⁾ SPK, ⁽²⁾ AIS

...

7.0L (427") V8 4-Bbl.

PCV, ⁽²⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	California emissions only.

⁽³⁾	If equipped with factory multiple carburetors.

1967 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

2.5L (153") 4-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

2.7L (164") 6-Cyl. 2x1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

2.7L (164") 6-Cyl. 4x1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

3.2L (194") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

3.8L (230") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

4.6L (283") V8 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.4L (327") V8 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.4L (327") V8 4-Bbl.

⁽²⁾ PCV, SPK, ⁽³⁾ AIS

...

5.7L (350") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

6.5L (396") V8 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

7.0L (427") V8 3x2-Bbl.

⁽²⁾ PCV, SPK, ⁽³⁾ AIS

...

7.0L (427") V8 4-Bbl.

⁽²⁾ PCV, SPK, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 1 vented; Type 4 closed.

⁽³⁾	California only.

1967 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS

...

5.4L (330") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS
CCS

...

6.5L (400") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS
CCS

...

7.0L (425") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ AIS
CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	California only.

1967 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

3.8L (230") 6-Cyl. 1-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ AIS

...

3.8L (230") 6-Cyl. 4-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ AIS

...

5.3L (326") V8 2-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ AIS

...

5.3L (326") V8 4-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ AIS

...

6.5L (400") V8 2-Bbl. ⁽⁶⁾

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ ⁽⁷⁾ AIS
⁽⁸⁾ CCS

...

6.5L (400") V8 2-Bbl. ⁽⁹⁾

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ ⁽⁷⁾ AIS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ ⁽⁷⁾ AIS

...

7.0L (428") V8 4-Bbl.

⁽²⁾ ⁽³⁾ PCV, ⁽⁴⁾ SPK, ⁽⁵⁾ ⁽⁷⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 3 vented (Federal).

⁽³⁾	Type 4 closed.

⁽⁴⁾	Some models.

⁽⁵⁾	California only.

⁽⁶⁾

A/T only.

⁽⁷⁾	255 HP engines with A/C.

⁽⁸⁾	Except Tempest.

⁽⁹⁾

M/T only.

1967 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Models (Carb.) ⁽²⁾

PCV, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽³⁾	Light duty California only (6000 GVWR or less).

1967 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1968 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.0L (250") 6-Cyl. 1-Bbl.

PCV, ⁽²⁾ ACL, SPK
CCS

...

5.7L (350") V8 2-Bbl. & 4-Bbl.

PCV, ACL, SPK
CCS

...

6.5L (400") V8 4-Bbl.

PCV, ACL, SPK
CCS

...

7.0L (430") V8 4-Bbl.

PCV, ACL, SPK
CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾

A/T only.

1968 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

7.7L (472") V8 4-Bbl.

PCV, AP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1968 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.4L (327") V8 4-Bbl.

PCV, ⁽²⁾ AIS

...

7.0L (427") V8 3x2Bbl.

PCV, ⁽³⁾ SPK, ⁽²⁾ AIS

...

7.0L (427") V8 4-Bbl.

PCV, ⁽²⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾

M/T only.

⁽³⁾	If equipped with factory multiple carburetors.

1968 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

2.5L (153") 4-Cyl. 1-Bbl.

⁽²⁾ PCV, AIS

...

2.7L (164") 6-Cyl. 2x1-Bbl.

⁽³⁾ PCV, AIS

...

2.7L (164") 6-Cyl. 4x1-Bbl.

⁽³⁾ PCV, AIS

...

3.8L (230") 6-Cyl. 1-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ⁽⁵⁾ AIS

...

3.8L (230") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽²⁾ PCV, ACL, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

5.0L (302") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, AIS

...

5.0L (307") V8 2-Bbl. ⁽⁴⁾

⁽²⁾ PCV, AIS

...

5.0L (307") V8 2-Bbl. ⁽⁶⁾

⁽²⁾ PCV, ACL
CCS

...

5.4L (327") V8 2-Bbl. ⁽⁴⁾

⁽²⁾ PCV, AIS

...

5.4L (327") V8 2-Bbl.

⁽²⁾ PCV, ⁽⁶⁾ ACL, ⁽⁵⁾ AIS
CCS

...

5.4L (327") 4-Bbl. ⁽³⁾

⁽²⁾ PCV, SPK, ⁽⁵⁾ AIS

...

5.4L (327") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, AIS
⁽⁶⁾ CCS

...

5.4L (327") V8 4-Bbl. ⁽⁶⁾

⁽²⁾ PCV, ⁽⁶⁾ ACL
⁽⁶⁾ CCS

...

5.7L (350") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

5.7L (350") 4-Bbl. ⁽⁶⁾

⁽²⁾ PCV, ⁽⁶⁾ ACL, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

6.5L (396") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ⁽⁵⁾ AIS
⁽⁶⁾⁽⁷⁾ CCS

...

6.5L (396") V8 4-Bbl. ⁽⁶⁾

⁽²⁾ PCV, ACL, ⁽⁵⁾ AIS
⁽⁶⁾⁽⁷⁾ CCS

...

7.0L (427") V8 3x2-Bbl.

⁽²⁾ PCV, SPK, ⁽⁵⁾ AIS

...

7.0L (427") V8 4-Bbl.

⁽²⁾ PCV, SPK, ⁽⁵⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	Type 1 vented; Type 4 closed.

⁽⁴⁾	M/T & open element air cleaner.

⁽⁵⁾	California only.

⁽⁶⁾	A/T, except open element air cleaner.

⁽⁷⁾	Except Camaro & Nova.

1968 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

6.5L (400") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

7.5L (455") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	Some models.

1968 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

4.2L (250") 6-Cyl. 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

5.7L (350") V8 2-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

5.7L (350") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

6.5L (400") V8 2-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

7.0L (428") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	Some models.

1968 Domestic Trucks & Vans

Engine & Fuel System ⁽¹⁾

⁽²⁾ Emission Control Systems & Devices

EGR Test No.

3.8L (230") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

4.1L (250") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ AIS
CCS

...

4.8L (292") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL

...

5.0L (307") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ AIS
⁽⁷⁾ CCS

...

5.4L (327") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL

...

6.5L (396") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁸⁾ AIS
⁽⁹⁾ CCS

...

⁽¹⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽²⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽³⁾	Heavy duty uses PCV only (6001 GVWR or more).

⁽⁴⁾	All except oil bath type air cleaner.

⁽⁵⁾

M/T only.

⁽⁶⁾	El Camino with A/T.

⁽⁷⁾

A/T only.

⁽⁸⁾	All light duty trucks & El Camino with 350 HP.

⁽⁹⁾	El Camino with 350 HP.

1968 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1969 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.0L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, SPK
SPK-TCS, CCS

...

5.7L (350") V6 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ACL, SPK
SPK-TCS, CCS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ACL, SPK
SPK-TCS, CCS

...

7.0L (430) V8 4-Bbl.

⁽²⁾ PCV, ACL, SPK
SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

1969 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

7.7L (472") V8 4-Bbl.

PCV, AP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1969 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.7L (350") V8 4-Bbl.

PCV, ⁽²⁾ AIS

...

7.0L (427") V8 3x2-Bbl.

PCV, ⁽³⁾ SPK, AIS
⁽⁴⁾ CCS

...

7.0L (427") V8 4-Bbl.

PCV, ⁽²⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾

M/T only.

⁽³⁾	If equipped with factory multiple carburetors.

⁽⁴⁾

A/T only.

1969 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

2.5L (153") 4-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

3.8L (230") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

5.0L (302") V8 4-Bbl. ⁽⁶⁾

⁽²⁾ PCV, AIS

...

5.0L (307") V8 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

5.4L (327") V8 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

5.4L (327") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ SPK, ⁽⁶⁾ AIS

...

5.7L (350") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁵⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

6.5L (396") V8 2-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

6.5L (396") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁵⁾ ACL, ⁽⁴⁾ AIS
⁽⁵⁾ CCS

...

7.0L (427") V8 3x2-Bbl.

⁽²⁾ PCV, ⁽⁷⁾ SPK, ⁽⁶⁾ AIS
⁽³⁾ CCS

...

7.0L (427") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ SPK, ⁽³⁾ AIS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾

A/T only.

⁽⁴⁾	California only.

⁽⁵⁾	A/T, except open element air cleaner.

⁽⁶⁾

M/T only.

⁽⁷⁾	All except open element or dual inlet air cleaner.

1969 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

6.5L (400") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

7.5L (455") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ⁽³⁾ ACL, SPK
CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	Some models.

1969 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

4.2L (250") 6-Cyl. 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

5.7L (350") V8 2-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

5.7L (350") V8 2-Bbl. ⁽⁵⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS, VA

...

5.7L (350") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

5.7L (350") V8 4-Bbl. ⁽⁵⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

6.5L (400") V8 2-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

6.5L (400") V8 2-Bbl. ⁽⁵⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS, VA

...

6.5L (400") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

7.0L (428") V8 4-Bbl. ⁽⁴⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

7.0L (428") V8 4-Bbl. ⁽⁵⁾

⁽²⁾ PCV, ACL, ⁽³⁾ SPK
CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	Some models.

⁽⁴⁾

A/T only.

⁽⁵⁾

M/T only.

1969 Domestic Trucks & Vans

Engine & Fuel System ⁽¹⁾

⁽²⁾ Emission Control Systems & Devices

EGR Test No.

3.8L (230") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

4.1L (250") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

4.8L (292") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ AIS
⁽⁶⁾ CCS

...

5.0L (307") V8 Carb.

PCV, ⁽⁴⁾ ACL, ⁽⁷⁾ AIS
⁽⁸⁾ CCS

...

5.7L (350") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁷⁾ AIS
⁽⁸⁾ CCS

...

6.5L (396") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ AIS
⁽⁸⁾ CCS

...

⁽¹⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽²⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽³⁾	Heavy duty uses PCV only (6001 GVWR or more).

⁽⁴⁾	All except oil bath type air cleaner.

⁽⁵⁾

M/T only.

⁽⁶⁾	El Camino with A/T.

⁽⁷⁾	M/T light duty trucks only.

⁽⁸⁾	A/T light duty trucks only.

1969 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1970 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.0L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

7.5L (455") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	California only.

1970 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

7.7L (472") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, SPK, AP
⁽³⁾ EVAP-VC, SPK-TCS, CCS

...

8.2L (500") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
⁽³⁾ EVAP-VC, SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed (California); Type 1 vented (Federal).

⁽³⁾	California only.

1970 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.7L (350") V8 4-Bbl. California

PCV, EVAP, ⁽²⁾ SPK
EVAP-VC, CCS

...

5.7L (350") V8 4-Bbl. Federal

PCV, ⁽²⁾ SPK, ⁽³⁾ AIS

...

7.5L (454") V8 4-Bbl.

PCV, ⁽⁴⁾ EVAP, SPK, ⁽⁵⁾ AIS
EVAP-VC

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Some models.

⁽³⁾	On 370 HO (LT-1) engine only.

⁽⁴⁾	California emissions only.

⁽⁵⁾	On 460 HP engine only.

1970 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

2.5L (153") 4-Cyl. 1-Bbl.

⁽²⁾ PCV, ⁽³⁾ EVAP, SPK, AIS
EVAP-VC, SPK-TCS

...

3.8L (230") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.0L (302") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.0L (307") V8 2-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, ⁽³⁾ EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

5.7L (350") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, ⁽³⁾ EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

6.5L (396") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, ⁽³⁾ EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

6.5L (400") v8 2-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, ⁽³⁾ EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

6.6L (402") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, ⁽³⁾ EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

7.0L (427") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, ⁽³⁾ EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

7.5L (454") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	California only.

⁽⁴⁾	All except open element or dual inlet air cleaner.

1970 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, CCS, SPK-TCS

...

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, CCS, SPK-TCS

...

7.5L (455") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, CCS, SPK-TCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	California only.

1970 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

6.5L (400") V8 2-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

7.5L (455") V8 4-Bbl.

⁽²⁾ PCV, ACL, ⁽³⁾ EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	California only.

1970 Domestic Trucks & Vans

Engine & Fuel System ⁽¹⁾

⁽²⁾ Emission Control Systems & Devices

EGR Test No.

4.1L (250") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ EVAP, ⁽⁶⁾ SPK
EVAP-VC, SPK-TCS, ⁽⁶⁾ CCS

...

4.8L (292") 6-Cyl. Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ EVAP, ⁽⁶⁾ SPK
EVAP-VC, SPK-TCS, ⁽⁶⁾ CCS

...

5.0L (307") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ⁽⁷⁾ ACL, ⁽⁵⁾ EVAP, ⁽⁶⁾ SPK
EVAP-VC, SPK-TCS, ⁽⁶⁾ CCS

...

5.7L (350") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ EVAP, ⁽⁶⁾ SPK
EVAP-VC, SPK-TCS, ⁽⁶⁾ CCS

...

6.0L (366") & 6.2L (379") V8 Carb.

PCV

...

6.5L (396") V8 Carb. ⁽³⁾

PCV, ⁽⁴⁾ ACL, ⁽⁵⁾ EVAP, ⁽⁶⁾ SPK
EVAP-VC, SPK-TCS, ⁽⁶⁾ CCS

...

7.0L (427"/432") V8 Carb.

PCV

...

7.7L (473") V8 Carb.

PCV

...

⁽¹⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽²⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽³⁾	Heavy duty uses PCV only (6001 GVWR or more).

⁽⁴⁾	All except oil bath type air cleaner.

⁽⁵⁾	Light duty California only (6000 GVWR or less).

⁽⁶⁾	All trucks & light duty vans only (6000 GVWR or less).

⁽⁷⁾	All air cleaners are thermostatically controlled, except oil bath type.

1970 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV, ⁽²⁾ ⁽³⁾ EVAP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Some California models.

⁽³⁾	Some models.

1971 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.0L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

7.5L (455") V8 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

1971 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

7.7L (472") V8 4-Bbl.

PCV, ACL, EVAP, SPK, AP
EVAP-VC, SPK-TCS

...

8.2L (500") V8 4-Bbl.

PCV, ACL, EVAP, SPK, AP
EVAP-VC, SPK-TCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1971 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.7L (350") V8 4-Bbl.

PCV, EVAP, SPK, ⁽²⁾ AIS
EVAP-VC

...

7.5L (454") V8 4-Bbl.

PCV, EVAP-, SPK, ⁽³⁾ AIS
EVAP-VC

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	On 330 HP engine only.

⁽³⁾	On 425 engine only.

1971 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

2.3L (140") 4-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.0L (307") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

5.7L (350") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

6.5L (400") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

6.6L (402") V8 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

7.5L (454") V8 4-Bbl.

⁽²⁾ PCV, ⁽⁴⁾ ACL, EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	Open element air cleaner only.

⁽⁴⁾	All except open element or dual inlet air cleaner.

1971 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, ⁽³⁾ SPK-DVCS, ⁽⁴⁾ SPK-TCS, CCS

...

7.5L (455") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, ⁽³⁾⁽⁵⁾ SPK-DVCS, ⁽⁶⁾ SPK-TCS, CCS

...

7.5L (455") V8 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, ⁽³⁾⁽⁵⁾ SPK-DVCS, ⁽⁷⁾ SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	A/C or heavy duty cooling only.

⁽⁴⁾	Without A/C.

⁽⁵⁾	"A" Body & Toronado.

⁽⁶⁾	"B" Body with A/C.

⁽⁷⁾	"B" & "C" Bodies with A/C.

1971 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.0L (307") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

6.5L (400") V8 2-Bbl. ⁽³⁾

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

6.5L (400") V8 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

7.5L (455") V8 2-Bbl. ⁽³⁾

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

7.5L (455") V8 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, ⁽⁴⁾ SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾

A/T only.

⁽⁴⁾	Except HO engines.

1971 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

Light Duty Emissions (6000 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ⁽³⁾ ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

4.8L (292") 6-Cyl. Carb.

PCV, ⁽³⁾ ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.0L (307") V8 Carb.

PCV, ⁽³⁾ ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 Carb.

PCV, ⁽³⁾ ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

6.6L (402") V8 Carb.

PCV, ⁽³⁾ ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

Heavy Duty Emissions (6001 GVWR Or More) ⁽²⁾

4.1L (250") 6-Cyl. Carb.

PCV, ⁽³⁾ ACL
CCS

...

4.8L (292") 6-Cyl. Carb.

PCV, ⁽³⁾ ACL
CCS

...

5.0L (307"), 5.7L (350") & 6.6L (402") V8 Carb.

PCV, ⁽³⁾ ACL
CCS

...

6.0L (366") & 6.2L (379") V8 Carb.

PCV

...

7.0L (427"/432") V8 Carb.

PCV

...

7.7L (473") V8 Carb.

PCV

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽³⁾	All air cleaners are thermostatically controlled, except oil bath type.

1971 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV, ⁽²⁾ ⁽³⁾ EVAP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Some California models.

⁽³⁾	Some models.

1972 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 2-Bbl. ⁽³⁾⁽⁴⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 2-Bbl. ⁽⁴⁾⁽⁶⁾

⁽⁵⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl.

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 2-Bbl. ⁽⁶⁾⁽⁷⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl. ⁽³⁾⁽⁴⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl. ⁽⁴⁾⁽⁶⁾

⁽⁵⁾ PCV, ACL, EVAP, SPK, AIS
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 4-Bbl. ⁽³⁾⁽⁷⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl. ⁽⁶⁾⁽⁷⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

7.5L (455") V8 4-Bbl.

⁽⁵⁾ PCV, ACL, ⁽⁸⁾ EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾

A/T only.

⁽⁵⁾	Type 4 closed.

⁽⁶⁾	Federal only.

⁽⁷⁾

M/T only.

⁽⁸⁾	Type 3 vented (Federal); Type 4 closed (Calif.).

1972 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

7.7L (472") V8 4-Bbl.

PCV, ACL, EVAP, AP
EVAP-VC, CCS

...

8.2L (500") V8 4-Bbl.

PCV, ACL, EVAP, AP
EVAP-VC, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

1972 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.7L (350") V8 4-Bbl.

PCV, EVAP, SPK, ⁽²⁾ AIS
EVAP-CS, ⁽³⁾ CCS

...

7.5L (454") V8 4-Bbl.

PCV, EVAP, SPK, AIS
EVAP-VC

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Required on high performance Fed. 225 HP (LT-1) engine & Calif. engines.

⁽³⁾	Required on Federal base engine only.

1972 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

2.3L (140") 4-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽⁴⁾ AIS
EVAP-VC, ⁽⁵⁾ SPK-TCS, ⁽⁶⁾ CCS

...

2.3L (140") 4-Cyl. 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽⁴⁾ AIS
EVAP-VC, ⁽⁵⁾ SPK-TCS, ⁽⁶⁾ CCS

...

4.2L (250") 6-Cyl. 1-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁷⁾ CCS

...

5.0L (307") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽⁸⁾ ⁽⁹⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁷⁾ CCS

...

5.7L (350") V8 2-Bbl.

⁽²⁾ PCV, ⁽¹⁰⁾ ACL, EVAP, SPK, ⁽⁸⁾ ⁽¹¹⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁷⁾ CCS

...

5.7L (350") V8 4-Bbl.

⁽²⁾ PCV, ⁽¹⁰⁾ ACL, EVAP, SPK, ⁽⁸⁾ ⁽¹¹⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁷⁾ CCS

...

6.5L (400") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽⁸⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁷⁾ CCS

...

6.6L (402") V8 4-Bbl.

⁽²⁾ PCV, ⁽¹⁰⁾ ACL, EVAP, SPK, ⁽⁷⁾ AIS
EVAP-VC, SPK-TCS

...

7.5L (454") V8 4-Bbl.

⁽²⁾ PCV, ⁽¹⁰⁾ ACL, EVAP, SPK, ⁽⁷⁾ AIS
EVAP-VC, SPK-TCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾	California only.

⁽⁴⁾	All 110 HP & Calif. 90 HP engines only.

⁽⁵⁾	All except California A/T.

⁽⁶⁾	All 90 HP, except California.

⁽⁷⁾	Federal only.

⁽⁸⁾	Required for California; optional for Federal.

⁽⁹⁾	165 HP only.

⁽¹⁰⁾	All except open element or dual element air cleaner.

⁽¹¹⁾	Federal open element air cleaner only.

1972 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-DVCS, CCS

...

7.5L (455") V8 4-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-DVCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

1972 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽⁴⁾ AIS
EVAP-VC, CCS

...

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁵⁾

⁽²⁾ PCV, ACL, EVAP, SPK, ⁽⁴⁾ AIS
EVAP-VC, CCS

...

5.0L (307") V8 2-Bbl.

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, CCS

...

5.7L (350") V8 2-Bbl. ⁽³⁾

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-SC, CCS

...

6.5L (400") V8 2-Bbl. ⁽³⁾

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-SC, CCS

...

6.5L (400") V8 4-Bbl. ⁽³⁾

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-SC, CCS

...

6.5L (400") V8 4-Bbl. ⁽⁵⁾

⁽²⁾ PCV, ACL, EVAP, ⁽⁶⁾ SPK
EVAP-VC, ⁽⁶⁾ SPK-SC, ⁽⁷⁾SPK-TCS, CCS

...

7.5L (455") V8 4-Bbl. ⁽³⁾

⁽²⁾ PCV, ACL, EVAP, SPK
EVAP-VC, SPK-SC, CCS

...

7.5L (455") V8 4-Bbl. ⁽⁵⁾

⁽²⁾ PCV, ACL, EVAP, ⁽⁶⁾ SPK
EVAP-VC, ⁽⁶⁾ SPK-SC, ⁽⁷⁾ SPK-TCS, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Type 4 closed.

⁽³⁾

A/T only.

⁽⁴⁾	California only.

⁽⁵⁾

M/T only.

⁽⁶⁾

3-speed.

⁽⁷⁾

4-speed.

1972 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

Light Duty Emissions (6000 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, ⁽³⁾ SPK, ⁽⁴⁾ AIS
EVAP-VC, SPK-TCS, ⁽³⁾ CCS

...

4.8L (292") 6-Cyl. Carb.

PCV, ACL, EVAP, SPK, ⁽⁵⁾ SPK
EVAP-VC, SPK-TCS, CCS

...

5.0L (307") V8 Carb.

PCV, ACL, EVAP, SPK
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 Carb.

PCV, ACL, EVAP, ⁽⁴⁾ SPK, ⁽⁵⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁴⁾ CCS

...

6.6L (402") V8 Carb.

PCV, ACL, EVAP, SPK, ⁽³⁾ SPK
EVAP-VC, SPK-TCS

...

Heavy Duty Emissions (6001 GVWR Or More) ⁽²⁾

4.1L (250") 6-Cyl. Carb.

PCV, ACL
⁽³⁾ CCS

...

4.8L (292") V8 Carb

PCV, ACL
CCS

...

5.0L (307") V8 Carb.

PCV, ACL
CCS

...

5.7L (350") V8 Carb.

PCV, ACL
CCS

...

6.0L (366") & 6.2L (379") V8 Carb.

PCV, ⁽³⁾ ACL

...

6.6L (402") V8 Carb.

PCV, ACL
CCS

...

7.0L (427"/432") V8 Carb.

PCV, ⁽³⁾ ACL

...

7.7L (473") V8 Carb.

PCV, ⁽³⁾ ACL

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽³⁾	Federal only.

⁽⁴⁾	Some models.

⁽⁵⁾	California only.

1972 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV, ⁽²⁾ ⁽³⁾ EVAP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Some California models.

⁽³⁾	Some models.

1972 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽²⁾ EVAP, SPK, AIS
CRV, SPK-DPD

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Crankcase storage type.

1973 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

4.0L (250") 6-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, ⁽⁵⁾ EVAP, EGR, SPK, AIS

4.0L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, SPK, AIS
EVAP-VC, SPK-TCS, CCS

...

5.7L (350") V8 2-Bbl.

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, CCS

5.7L (350") V8 4-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

7.5L (455") V8 4-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, ⁽⁷⁾ SPK, AIS
EVAP-VC, ⁽⁷⁾ SPK-TCS, CCS

7.5L (455") V8 4-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾

A/T only.

⁽⁴⁾	Type 4 closed.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾

M/T only.

⁽⁷⁾	Stage 1 engine only.

1973 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

7.7L (472") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, EGR, AP

8.2L (500") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, EGR, AP

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Vapor canister type.

1973 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl.

PCV, EVAP, EGR, SPK, AIS
EVAP-VC

7.5L (454") V8 4-Bbl.

PCV, EVAP, EGR, SPK, AIS
EVAP-VC

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

1973 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR
EVAP-VC, CCS

2.3L (140") 4-Cyl. 1-Bbl. ⁽⁵⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, ⁽⁶⁾ SPK-TCS, CCS

2.3L (140") 4-Cyl. 2-Bbl. ⁽⁵⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR
EVAP-VC, CCS

2.3L (140") 4-Cyl. 2-Bbl. ⁽⁵⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, ⁽⁶⁾ SPK-TCS, CCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, ⁽⁷⁾ EVAP, EGR, AIS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁵⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS

5.0L (307") V8 2-Bbl.

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS

5.7L (350") V8 2-Bbl.

⁽⁴⁾ PCV, ⁽⁸⁾ ACL, EVAP, EGR, SPK, AIS
EVAP-VC, ⁽⁸⁾ SPK-TCS

5.7L (350") V8 4-Bbl.

⁽⁴⁾ PCV, ⁽⁸⁾ ACL, EVAP, EGR, SPK, AIS
EVAP-VC, ⁽⁵⁾ SPK-TCS

6.5L (400") V8 2-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, ⁽⁷⁾ EVAP, EGR, AIS

7.5L (454") V8 4-Bbl.

⁽⁴⁾ PCV, ⁽⁸⁾ ACL, EVAP, EGR, SPK, AIS
EVAP-VC, ⁽⁵⁾ SPK-TCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾

A/T only.

⁽⁴⁾	Type 4 closed.

⁽⁵⁾

M/T only.

⁽⁶⁾	All 110 HP & Calif. 90 HP engines only.

⁽⁷⁾	Vapor canister type.

⁽⁸⁾	All except open element or dual element air cleaner.

1973 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, AIS
EVAP-VC, CCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁵⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, CCS

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽⁴⁾ PCV, ACL, EVAP, EGR, AIS
EVAP-VC, CCS

7.5L (455") V8 4-Bbl.

⁽⁴⁾ PCV, ACL, EVAP, EGR, AIS
EVAP-VC, CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾

A/T only.

⁽⁴⁾	Type 4 closed.

⁽⁵⁾

M/T only.

1973 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, ⁽⁵⁾ EVAP, EGR, SPK, AIS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS

5.7L (350") V8 2-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK, ⁽⁷⁾ AIS
EVAP-VC, SPK-TCS

5.7L (350") V8 2-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, SPK-TCS

6.5L (400") V8 2-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK, ⁽⁸⁾ AIS
EVAP-VC, SPK-TCS

6.5L (400") V8 4-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, SPK-TCS

6.5L (400") V8 4-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, SPK-TCS

7.5L (455") V8 4-Bbl.

⁽³⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, SPK-TCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Type 4 closed.

⁽⁴⁾

A/T only.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾

M/T only.

⁽⁷⁾	California only.

⁽⁸⁾	California "B" station wagon.

1973 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (6000 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, EGR, SPK, ⁽⁴⁾ AIS
EVAP-VC, SPK-TCS

5.0L (307") V8 Carb.

PCV, ACL, EVAP, EGR, ⁽⁵⁾ SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.0L (350") V8 Carb.

PCV, ACL, EVAP, EGR, ⁽⁵⁾ SPK, AIS
EVAP-VC, SPK-TCS

7.4L (454") V8 Carb.

PCV, ACL, EVAP, EGR, ⁽⁵⁾ SPK, AIS
EVAP-VC, SPK-TCS

Heavy Duty Emissions (6001 GVWR Or More) ⁽³⁾

4.1L (250") 6-Cyl. Carb.

PCV, ACL, ⁽⁷⁾ EVAP
EVAP-VC, ⁽⁶⁾ CCS

...

4.8L (292") 6-Cyl. Carb.

PCV, ACL, ⁽⁷⁾ EVAP, ⁽⁸⁾ AIS
EVAP-VC, ⁽⁶⁾ CCS

...

5.0L (307") V8 Carb.

PCV, ⁽⁸⁾ ACL, ⁽⁷⁾ EVAP
EVAP-VC, CCS

...

5.7L (350") V8 Carb.

PCV, ⁽⁸⁾ ACL, ⁽⁷⁾ EVAP
EVAP-VC, CCS

...

6.0L (366") & 6.2L (379") V8 Carb.

PCV, ⁽⁶⁾ ACL

...

7.0L (427"/432") V8 Carb.

PCV, ⁽⁶⁾ ACL

...

7.4L (454") V8 Carb.

PCV, ⁽⁷⁾ ACL, ⁽⁷⁾ EVAP, ⁽⁸⁾ AIS
EVAP-VC, ⁽⁶⁾ CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	All models except Federal A/T.

⁽⁵⁾

M/T only.

⁽⁶⁾	Federal only.

⁽⁷⁾	Some models.

⁽⁸⁾	California only.

1973 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV, ⁽²⁾ ⁽³⁾ EVAP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Some California models.

⁽³⁾	Some models.

1973 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽²⁾ EVAP, SPK, AIS
CRV, SPK-DPD

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Crankcase storage type.

1974 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

4.0L (250") 6-Cyl. 1-Bbl. ⁽³⁾⁽⁴⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, CCS

4.0L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽⁵⁾ PCV, ACL, ⁽⁷⁾ EVAP, EGR, SPK, AIS

5.7L (350") V8 2-Bbl. & 4-BbL.

⁽⁵⁾ PCV, ACL, EVAP, ⁽⁸⁾ EGR, SPK, AIS
EVAP-VC, CCS

7.5L (455") V8 2-Bbl.

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

7.5L (455") 4-Bbl. ⁽⁴⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, ⁽⁹⁾ SPK, AIS
EVAP-VC, ⁽⁹⁾ SPK-TCS, CCS

7.5L (455") V8 4-Bbl. ⁽⁶⁾

⁽⁵⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Federal only.

⁽⁴⁾

A/T only.

⁽⁵⁾	Type 4 closed.

⁽⁶⁾

M/T only.

⁽⁷⁾	Vapor canister type.

⁽⁸⁾	Dual Diaphragm EGR (Calif.).

⁽⁹⁾	Stage 1 engine only.

1974 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

7.7L (472") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, EGR, AP

8.2L (500") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, EGR, AP

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Vapor canister type.

1974 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl. California

PCV, EVAP, EGR, ⁽³⁾ SPK, AIS
EVAP-VC

5.7L (350") V8 4-Bbl. Federal

PCV, EVAP, EGR, ⁽³⁾ SPK, ⁽⁴⁾ AIS
EVAP-VC, ⁽⁵⁾ CCS

7.5L (454") V8 4-Bbl.

PCV, EVAP, EGR, ⁽³⁾ SPK, AIS
EVAP-VC

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾

M/T only.

⁽⁴⁾	M/T models & optional L-82 engine with A/T.

⁽⁵⁾	On base L-48 engine with A/T.

1974 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, ⁽⁵⁾ EVAP, EGR

2.3L (140") 4-Cyl. 1-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, SPK-TCS

2.3L (140") 4-Cyl. 2-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, ⁽⁵⁾ EVAP, EGR

2.3L (140") 4-Cyl. 2-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, SPK-TCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, ⁽⁵⁾ EVAP, EGR, AIS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS

5.7L (350") V8 2-Bbl. ⁽³⁾⁽⁷⁾

⁽⁴⁾ PCV, ACL, ⁽⁵⁾ EVAP, EGR, AIS

5.7L (350") V8 2-Bbl. ⁽⁶⁾⁽⁷⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, ⁽⁷⁾ SPK-TCS

5.7L (350") V8 4-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ⁽⁸⁾ ACL, ⁽⁵⁾ EVAP, EGR, AIS

5.7L (350") V8 4-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS

6.5L (400") V8 2-Bbl. ⁽³⁾⁽⁷⁾

⁽⁴⁾ PCV, ACL, ⁽⁵⁾ EVAP, EGR, AIS

7.5L (454") V8 4-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ⁽⁸⁾ ACL, ⁽⁵⁾ EVAP, EGR, AIS

7.5L (454") V8 4-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ⁽⁸⁾ ACL, EVAP, EGR, SPK, AIS
EVAP-VC, ⁽⁷⁾ SPK-TCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾	Type 4 closed.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾	Federal only.

⁽⁷⁾	On Federal models with M/T, on optional L82 engines with A/T & on all Calif. engines.

⁽⁸⁾

M/T only.

1974 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, ⁽⁵⁾ EGR, AIS
EVAP-VC, CCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 2-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, CCS

5.7L (350") V8 4-Bbl.

⁽⁴⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, CCS

7.5L (455") V8 4-Bbl. ⁽⁷⁾

⁽⁴⁾ PCV, ⁽⁸⁾ ACL, EVAP, EGR, SPK
EVAP-VC, CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾

A/T only.

⁽⁴⁾	Type 4 closed.

⁽⁵⁾	California only.

⁽⁶⁾

M/T only.

⁽⁷⁾	Except Toronado.

⁽⁸⁾	Federal only.

1974 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK, ⁽⁵⁾ AIS
EVAP-VC, CCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 2-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK, ⁽⁵⁾ AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 2-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, ⁽⁷⁾ EGR, SPK
EVAP-VC, SPK-TCS, CCS

2 or 3

5.7L (350") V8 4-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, ⁽⁷⁾ EGR, SPK
EVAP-VC, SPK-TCS, CCS

2 or 3

6.5L (400") V8 2-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, EGR, SPK
EVAP-VC, SPK-TCS, CCS

6.5L (400") V8 4-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, ⁽⁷⁾ EGR, SPK
EVAP-VC, SPK-TCS, CCS

2 or 3

6.5L (400") V8 4-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, ⁽⁷⁾ EGR, SPK
EVAP-VC, SPK-TCS, CCS

2 or 3

7.5L (455") V8 4-Bbl. ⁽⁴⁾

⁽³⁾ PCV, ACL, EVAP, ⁽⁷⁾ EGR, SPK
EVAP-VC, SPK-TCS, CCS

2 or 3

7.5L (455") V8 4-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, ⁽⁷⁾ EGR, SPK
EVAP-VC, SPK-TCS, CCS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Type 4 closed.

⁽⁴⁾

A/T only.

⁽⁵⁾	California only.

⁽⁶⁾

M/T only.

⁽⁷⁾	Dual diaphragm EGR valve (some Calif. models).

1974 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (6000 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, EGR, ⁽⁵⁾ SPK, ⁽⁴⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁸⁾ CCS

5.7L (350") V8 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, EGR, ⁽⁵⁾ SPK, AIS
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, EGR, ⁽⁵⁾ SPK, AIS
EVAP-VC, SPK-TCS, CCS

7.4L (454") V8 4-Bbl.

PCV, ACL, EVAP, EGR, ⁽⁵⁾ SPK, ⁽⁷⁾ ⁽⁹⁾ AIS
EVAP-VC, SPK-TCS, ⁽⁸⁾ CCS

Heavy Duty Emissions (6001 GVWR Or More) ⁽³⁾

4.1L (250") 6-Cyl. Carb.

PCV, ⁽⁷⁾ ACL, ⁽⁷⁾ ⁽¹⁰⁾ EVAP

...

4.8L (292") 6-Cyl. Carb.

PCV, ⁽⁷⁾ ACL, ⁽⁷⁾ ⁽¹⁰⁾ EVAP

...

5.7L (350") V8 Carb.

PCV, ⁽⁷⁾ ACL, ⁽⁷⁾ ⁽¹⁰⁾ EVAP

...

6.0L (366") & 6.2L (379") V8 Carb.

PCV, ⁽⁷⁾ ACL

...

7.0L (427"/432") V8 Carb.

PCV, ⁽⁷⁾ ACL

...

7.4L (454") V8 Carb.

PCV, ⁽⁷⁾ ACL, ⁽⁷⁾ ⁽¹⁰⁾ EVAP

...

7.7L (473") V8 Carb.

PCV, ⁽⁷⁾ ACL

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	All models except Federal A/T.

⁽⁵⁾

M/T only.

⁽⁶⁾	Federal only.

⁽⁷⁾	Some models.

⁽⁸⁾	California only.

⁽⁹⁾	Federal with A/T.

⁽¹⁰⁾	Vapor canister type.

1974 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV, ⁽³⁾ ACL, ⁽²⁾ ⁽⁴⁾ EVAP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Some California models.

⁽³⁾	Some models.

⁽⁴⁾	Vapor canister type.

1974 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, EGR, AIS
CRV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Crankcase storage type.

1975 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

3.8L (231") V6 2-Bbl.

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, ⁽⁴⁾ SPK-DV

4.0L (250") 6-Cyl. 1-Bbl. ⁽⁴⁾⁽⁵⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, EFE-OTS

4.0L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EFE-OTS

4.3L (260") V8 2-Bbl. ⁽⁵⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-BPS, SPK-CC

2 or 3

5.7L (350") V8 2-Bbl. & 4-Bbl.

⁽³⁾ PCV, ACL, ⁽⁷⁾ EVAP, OC, FR, EGR, SPK, ⁽⁸⁾ AIS, ⁽⁹⁾ EFE

6.5L (400") V8 2-Bbl. & 4-Bbl. ⁽⁵⁾

⁽³⁾ PCV, ACL, ⁽⁷⁾ EVAP, OC, FR, EGR, SPK, EFE

7.5L (455") V8 4-Bbl. ⁽⁵⁾

⁽³⁾ PCV, ACL, ⁽⁷⁾ EVAP, OC, FR, EGR, SPK, EFE

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Type 4 closed.

⁽⁴⁾	California only.

⁽⁵⁾

A/T only.

⁽⁶⁾	Federal only.

⁽⁷⁾	Vapor canister type.

⁽⁸⁾	4-Bbl. Century Wagon & LeSabre Sedan/Coupe (Calif. only).

⁽⁹⁾	Except 4-bbl. with AIS.

1975 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

8.2L (500") V8 EFI

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, ⁽⁴⁾ AP

8.2L (500") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, ⁽⁴⁾ EGR, ⁽⁴⁾ AP, EFE

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Vapor canister type.

⁽⁴⁾	Used on all Calif. models & all commercial chassis with 145-amp. alternator.

1975 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl.

PCV, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

1975 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl. 1-Bbl. ⁽⁴⁾

⁽⁵⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, ⁽⁶⁾ SPK-TCS

2.3L (140") 4-Cyl. 2-Bbl.

⁽⁵⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁷⁾ AIS, EFE
EVAP-VC, ⁽⁷⁾ SPK-TCS, ⁽⁸⁾ CCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁷⁾⁽⁸⁾

⁽⁵⁾ PCV, ACL, ⁽⁹⁾ EVAP, OC, FR, EGR, AIS, EFE

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁴⁾

⁽⁵⁾ PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, CCS

4.3L (262") V8 2-Bbl.

⁽⁵⁾ PCV, ACL, EVAP, OC, FR, EGR, ⁽⁷⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ CCS

5.7L (350") V8 2-Bbl. ⁽⁴⁾

⁽⁵⁾ PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, CCS

5.7L (350") V8 4-Bbl. ⁽¹⁰⁾

⁽⁵⁾ PCV, ACL, ⁽⁸⁾ EVAP, OC, FR, EGR, AIS, EFE

5.7L (350") V8 4-Bbl. ⁽³⁾

⁽⁵⁾ PCV, ACL, EVAP, OC, FR, EGR, ⁽⁷⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ CCS

6.5L (400") V8 4-Bbl. ⁽⁸⁾

⁽⁵⁾ PCV, ACL, EVAP, OC, FR, EGR, ⁽⁷⁾ ⁽¹¹⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ CCS

7.5L (454") V8 4-Bbl. ⁽⁴⁾⁽⁸⁾

⁽⁵⁾ PCV, ⁽⁴⁾ ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	RPO LM-1 (155 HP) only.

⁽⁴⁾	Federal only.

⁽⁵⁾	Type 4 closed.

⁽⁶⁾	All 110 HP & Calif. 90 HP engines only.

⁽⁷⁾	California only.

⁽⁸⁾	A/T only (some models).

⁽⁹⁾	Vapor canister type.

⁽¹⁰⁾	RPO L48 (165 HP) & L82 (205 HP) only.

⁽¹¹⁾	Catalyst air injection.

1975 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

3.8L (231") V6 2-Bbl.

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, ⁽⁴⁾ SPK-TVS

4.2L (250") 6-Cyl. 1-Bbl.

⁽³⁾ PCV, ACL, ⁽⁵⁾ EVAP, OC, FR, EGR, ⁽⁶⁾ AIS, EFE

4.3L (260) V8 2-Bbl.

⁽³⁾ PCV, ACL, ⁽⁵⁾ EVAP, OC, FR, BP/EGR, SPK, EFE

2 or 3

5.7L (350) V8 2-Bbl. ⁽⁷⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, SPK-TVS

5.7L (350") V8 4-Bbl. Cutlass & Eighty-Eight ⁽⁶⁾⁽⁸⁾

⁽³⁾ PCV, ACL, ⁽⁵⁾ EVAP, OC, FR, BP/EGR, SPK

2 or 3

5.7L (350") V8 4-Bbl. Cutlass & Eighty-Eight ⁽⁷⁾⁽⁸⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, ⁽⁴⁾ SPK-TVS

2 or 3

5.7L (350") V8 4-Bbl. Omega ⁽⁸⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁷⁾ EFE
EVAP-VC, SPK-TVS

6.5L (400") V8 2-Bbl. & 4-Bbl. ⁽⁷⁾⁽⁸⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DV

7.5L (455") V8 4-Bbl. ⁽⁶⁾⁽⁸⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, SPK-TVS

2 or 3

7.5L (455") V8 4-Bbl. ⁽⁷⁾⁽⁸⁾

⁽³⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, ⁽⁹⁾ SPK-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Type 4 closed.

⁽⁴⁾	Early production only.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾	California only.

⁽⁷⁾	Federal only.

⁽⁸⁾

A/T only.

⁽⁹⁾	Except late production Toronado.

1975 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, ⁽⁵⁾ SPK-TCS, CCS

2.3L (140") 4-Cyl. 2-Bbl. ⁽⁶⁾

⁽⁴⁾ PCV, ACL, ⁽⁷⁾ EVAP, OC, FR, EGR, AIS, EFE

2.3L (140") 4-Cyl. 2-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, CCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁶⁾⁽⁸⁾

⁽⁴⁾ PCV, ACL, ⁽⁷⁾ EVAP, OC, FR, EGR, AIS, EFE

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, ⁽⁷⁾ EVAP, OC, FR, EGR, EFE

4.3L (260") V8 2-Bbl. ⁽⁶⁾⁽⁸⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, AIS, EFE
EVAP-VC, BP/EGR-BPS

2 or 3

4.3L (260") V8 2-Bbl. ⁽³⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, EFE
EVAP-VC, BP/EGR-BPS

2 or 3

5.7L (350") V8 2-Bbl. ⁽³⁾⁽⁸⁾

⁽⁴⁾ PCV, ACL, EVAP, ⁽⁹⁾ BP/EGR, ⁽¹⁰⁾ EFE
EVAP-VC, ⁽¹¹⁾ BP/EGR-BPS

1 , 2 or 3

5.7L (350") V8 4-Bbl. ⁽⁸⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, ⁽⁹⁾ BP/EGR, ⁽⁶⁾ AIS, ⁽¹⁰⁾ EFE
EVAP-VC, ⁽¹¹⁾ BP/EGR-BPS

1 , 2 or 3

6.5L (400") V8 2-Bbl. ⁽³⁾⁽⁸⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, EFE
EVAP-VC, BP/EGR-BPS

2 or 3

6.5L (400") V8 4-Bbl. ⁽⁸⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, ⁽⁶⁾ AIS, ⁽³⁾ EFE

2 or 3

7.5L (455") V8 4-Bbl. ⁽⁸⁾

⁽⁴⁾ PCV, ACL, EVAP, OC, FR, BP/EGR, EFE
EVAP-VC, BP/EGR-BPS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Federal only.

⁽⁴⁾	Type 4 closed.

⁽⁵⁾

M/T only.

⁽⁶⁾	California only.

⁽⁷⁾	Vapor canister type.

⁽⁸⁾

A/T only.

⁽⁹⁾	Conventional EGR on Ventura.

⁽¹⁰⁾	Firebird and Ventura only.

⁽¹¹⁾	Except Ventura.

1975 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (6000 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, SPK-TCS, CCS

7.4L (454") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-TCS, CCS

Heavy Duty Emissions (6001 GVWR Or More) ⁽³⁾

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EFE
CCS

...

4.8L (292") 6-Cyl. Carb.

PCV, ACL, ⁽⁴⁾ ⁽⁵⁾ EVAP
CCS

...

5.7L (350") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, ⁽⁴⁾ AIS
EVAP-VC, ⁽⁶⁾ CCS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁴⁾ AIS

...

6.5L (400") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, ⁽⁴⁾ AIS
EVAP-VC, ⁽⁶⁾ CCS

...

7.4L (454") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, ⁽⁴⁾ EGR, ⁽⁴⁾ AIS
EVAP-VC, ⁽⁶⁾ CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	California only.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾	Federal only.

1975 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

EGR Test No.

All Engines Carb.

PCV, ⁽³⁾ ACL, ⁽²⁾ ⁽⁴⁾ EVAP

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	Some California models.

⁽³⁾	Some models.

⁽⁴⁾	Vapor canister type.

1975 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ EGR, AIS
CRV

1TEST 1

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Crankcase storage type.

⁽⁴⁾	California emissions.

1976 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, EGR-PVS, EFE-PVS, ⁽³⁾ A/C-ISUS

4.3L (260") V8 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, EFE
EVAP-VC, BP/EGR-BPS, BP/EGR-OVS, EFE-PVS

2 or 3

4.3L (260") V8 2-Bbl. ⁽⁵⁾

PCV, ACL, EVAP, OC, FR, BP/EGR
EVAP-VC, BP/EGR-BPS

2 or 3

4.3L (260") V8 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR
EVAP-VC, BP/EGR-BPS, BP/EGR-TVC

2 or 3

5.7L (350") V8 2-Bbl. & 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DPVS, EGR-PVS

7.5L (455") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, SPK-DPVS, EFE-PVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Skylark with A/C.

⁽⁴⁾	Early production (Calif. only).

⁽⁵⁾	Late production (Calif. only).

⁽⁶⁾	Federal only.

1976 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 EFI

PCV, EVAP, OC, FR, BP/EGR, AP
EVAP-VC, BP/EGR-BPS

2 or 3

8.2L (500") V8 EFI

PCV, EVAP, OC, FR, BP/EGR, AP
EVAP-VC, BP/EGR-BPS

2 or 3

8.2L (500") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, ⁽⁴⁾ AP, EFE

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Vapor canister type.

⁽⁴⁾	Used on all Calif. models & all commercial chassis with 145-amp. alternator.

1976 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl. California

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC

5.7L (350") V8 4-Bbl. Federal

PCV, ACL, EVAP, OC, FR, EGR, ⁽³⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	On L-82 & high altitude engines only.

⁽⁴⁾	On L-48 engine only.

1976 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.4L (86") 4-Cyl. 1-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS
EVAP-VC, EGR-TVS, SPK-DVDV

1.4L (86") 4-Cyl. 1-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR
EVAP-VC, CCS

1.6L (98") 4-Cyl. 1-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, AIS
EVAP-VC, EGR-TVS, SPK-DVDV

1.6L (98") 4-Cyl. 1-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR
EVAP-VC, CCS

2.0L (122") Cosworth 4-Cyl. EFI

PCV, ⁽⁵⁾ EVAP, OC, FR, AIS

2.3L (140") 4-Cyl. 1-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, ⁽⁶⁾ SPK-TCS, CCS

2.3L (140") 4-Cyl. 2-Bbl. ⁽³⁾

PCV, ACL, ⁽⁵⁾ EVAP, OC, FR, EGR, AIS

2.3L (140") 4-Cyl. 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR
EVAP-VC, CCS

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾⁽⁷⁾

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC, EGR-TVS

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, CCS

4.3L (262") V8 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, CCS

5.0L (305") V8 2-Bbl. ⁽³⁾⁽⁷⁾

PCV, ACL, EVAP, OC, FR, EGR, ⁽⁸⁾ AIS, EFE
EVAP-VC, EGR-TVS

5.0L (305") V8 2-Bbl. ⁽⁴⁾⁽⁷⁾

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, EGR-TVS, CCS

5.7L (350") V8 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, EGR-TVS, CCS

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, ⁽⁹⁾ AIS, EFE
EVAP-VC, EGR-TVS

6.5L (400") V8 4-Bbl. ⁽⁷⁾

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC, EGR-TVS

7.5L (454") V8 4-Bbl. ⁽⁴⁾⁽⁷⁾

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC, EGR-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾	Federal only.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾

M/T only.

⁽⁷⁾

A/T only.

⁽⁸⁾	Except VINs Q & U.

⁽⁹⁾

L82 only.

1976 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽³⁾ AIS
EVAP-VC, SPK-DPVS

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, EFE-PVS

4.2L (250") 6-Cyl. 1-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽³⁾ ⁽⁴⁾ AIS, EFE
EVAP-VC, EGR-PVS

4.3L (260") V8 2-Bbl. ⁽⁵⁾⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
ACL-TCV, EVAP-VC, BP/EGR-TCVLV

2 or 3

4.3L (260") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁷⁾ EFE
ACL-TCV, EVAP-VC, BP/EGR-TCVLV, BP/EGR-BPS, SPK-AVM, ⁽⁷⁾ EFE-PVS

2 or 3

4.3L (260") V8 2-Bbl. ⁽⁸⁾⁽³⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
ACL-TCV, EVAP-VC, BP/EGR-BPS, BP/EGR-TCVLV

2 or 3

5.7L (350") V8 4-Bbl. ⁽⁵⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, ⁽⁹⁾ SPK-DPVS, EFE-PVS

5.7L (350") V8 4-Bbl. ⁽¹⁰⁾⁽⁵⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, EGR-TCVLV

5.7L (350") V8 4-Bbl. ⁽¹¹⁾⁽³⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, ⁽⁹⁾ SPK-DPVS, EFE-PVS

5.7L (350") V8 4-Bbl. ⁽¹⁰⁾⁽³⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, BP/EGR-BPS, BP/EGR-TCVLV, SPK-DV

2 or 3

5.7L (350") V8 4-Bbl. ⁽¹²⁾⁽⁵⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, EGR-TCVLV, SPK-DPVS

2 or 3

7.5L (455") V8 4-Bbl. ⁽⁵⁾⁽⁴⁾⁽¹⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, EGR-TCVLV, SPK-DPVS

2 or 3

7.5L (455") V8 4-Bbl. ⁽³⁾⁽⁴⁾⁽¹⁴⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-BPS, BP/EGR-TCVLV, SPK-DV, SPK-DPVS, EFE-PVS

7.5L (455") V8 4-Bbl. ⁽¹³⁾⁽⁵⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, EGR-TCVLV

7.5L (455") V8 4-Bbl. ⁽¹³⁾⁽³⁾⁽⁴⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-BPS, BP/EGR-PVS, BP/EGR-TCVLV, SPK-DPVS, EFE-PVS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾

A/T only.

⁽⁵⁾	Federal only.

⁽⁶⁾

M/T only.

⁽⁷⁾	First type.

⁽⁸⁾	Second type.

⁽⁹⁾	With A/C only.

⁽¹⁰⁾	Cutlass & Eighty-Eight only.

⁽¹¹⁾	Omega only.

⁽¹²⁾	Models with 2.41 axle.

⁽¹³⁾	Toronado only.

⁽¹⁴⁾	Except Toronado.

1976 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl.. 1Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, CCS, SPK-TCS

2.3L (140") 4-Cyl. 2-Bbl. ⁽⁴⁾

PCV, ACL, ⁽⁵⁾ EVAP, OC, FR, EGR, SPK, AIS, EFE

2.3L (140") 4-Cyl. 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, CCS

3.8L (231") V6 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, SPK-TCS

3.8L (231") V6 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-PVS, SPK-DV

4.2L (250") 6-Cyl. 1-Bbl. ⁽⁴⁾⁽⁶⁾

PCV, ACL, ⁽⁵⁾ EVAP, OC, FR, EGR, AIS, EFE

4.2L (250") 6-Cyl. 1-Bbl. ⁽³⁾

PCV, ACL, ⁽⁵⁾ EVAP, OC, FR, EGR, EFE

4.3L (260") V8 2-Bbl. ⁽⁴⁾⁽⁶⁾⁽⁷⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-BPS, BP/EGR-PVS, BP/EGR-TCV, EFE-PVS

2 or 3

4.3L (260") V8 2-Bbl. ⁽⁴⁾⁽⁶⁾⁽⁸⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, BP/EGR-BPS, BP/EGR-PVS, BP/EGR-TCV

2 or 3

4.3L (260") V8 2-Bbl. ⁽³⁾⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, BP/EGR-BPS, BP/EGR-CV, SPK-AVM

2 or 3

4.3L (260") V8 2-Bbl. ⁽³⁾⁽⁹⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, BP/EGR-BPS, BP/EGR-CV

2 or 3

5.7L (350") V8 4-Bbl. ⁽⁴⁾⁽⁶⁾⁽¹⁰⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS
EVAP-VC, BP/EGR-BPS, SPK-DPVS, SPK-DV

2 or 3

5.7L (350") V8 2-Bbl. ⁽³⁾⁽⁶⁾⁽¹⁰⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DPVS, SPK-DV, EFE-PVS

5.7L (350") V8 2-Bbl. ⁽⁶⁾⁽¹¹⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, SPK-DPVS

5.7L (350") V8 2-Bbl. ⁽⁶⁾⁽¹²⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, EFE-PVS

5.7L (350") V8 4-Bbl. ⁽⁶⁾⁽¹¹⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-PVS, SPK-DPVS, EFE-PVS

2 or 3

5.7L (350") V8 4-Bbl. ⁽⁶⁾⁽¹²⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-PVS, EFE-PVS

2 or 3

6.5L (400") V8 2-Bbl. ⁽³⁾⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DPVS, SPK-DV, EFE-PVS

6.5L (400") V8 4-Bbl. ⁽⁴⁾⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS
EVAP-VC, BP/EGR-BPS, SPK-DPVS, SPK-DV

2 or 3

6.5L (400") V8 4-Bbl. ⁽³⁾⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DPVS, SPK-DV, EFE-PVS

6.5L (400") V8 4-Bbl. ⁽³⁾⁽⁹⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, SPK-DPVS, EFE-PVS

7.5L (455") V8 4-Bbl. ⁽⁴⁾⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-BPS, SPK-DPVS, EFE-PVS

2 or 3

7.5L (455") V8 4-Bbl. ⁽³⁾⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DPVS, SPK-AVM, EFE-PVS

7.5L (455") V8 4-Bbl. ⁽³⁾⁽⁹⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-PVS, SPK-DPVS, EFE-PVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Federal only.

⁽⁴⁾	California only.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾

A/T only.

⁽⁷⁾	Early production California 260" V8 engine.

⁽⁸⁾	Late production California 260" V8 engine.

⁽⁹⁾

M/T only.

⁽¹⁰⁾	Except Ventura.

⁽¹¹⁾	Ventura with A/C.

⁽¹²⁾	Ventura without A/C.

1976 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (6000 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, ⁽⁴⁾ OC, FR, EGR, ⁽⁵⁾ SPK, EFE
EVAP-VC, SPK-TCS, ⁽⁵⁾ CCS

1 v

5.7L (350") V8 2-Bbl. ⁽⁵⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-TCS, CCS

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, ⁽⁵⁾ SPK, ⁽⁴⁾ AIS, EFE
EVAP-VC, SPK-TCS, ⁽⁵⁾ CCS

7.4L (454") V8 4-Bbl. ⁽⁵⁾

PCV, ACL, EVAP, EFE
EVAP-VC, CCS

Heavy Duty Emissions (6001 GVWR Or More) ⁽³⁾

4.1L (250") 6-Cyl. Carb.

PCV, ACL, ⁽⁴⁾ EVAP
EVAP-VC, CCS

...

4.8L (292") 6-Cyl. Carb.

PCV, ⁽⁴⁾ ACL, ⁽⁴⁾ EVAP
EVAP-VC, CCS

...

5.7L (350") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, ⁽⁴⁾ AIS
EVAP-VC, CCS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁴⁾ AIS

...

6.5L (400") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, ⁽⁴⁾ AIS
EVAP-VC, CCS

...

7.4L (454") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, ⁽⁴⁾ EGR, ⁽⁴⁾ AIS
EVAP-VC, CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	California only.

⁽⁵⁾	Federal only.

1976 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

454" V8 Carb.

PCV, ACL, ⁽³⁾ EVAP, ⁽³⁾ EGR, ⁽³⁾ AIS
EVAP-VC, CCS

455" V8 Carb.

PCV, ACL, ⁽³⁾ EVAP
EVAP-VC, CCS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

1976 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ ⁽⁵⁾ OC, ⁽⁴⁾ FR, EGR, AIS
CRV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	1976-80 crankcase storage type; 1981 vapor canister type.

⁽⁴⁾	California emissions.

⁽⁵⁾	Except some Federal models.

1977 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS, EFE
EVAP-VC, BP/EGR-TVS, ⁽⁴⁾ SPK-AVM, EFE-CKV, EGR-TVS

2 or 3

4.9L (301") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK.
EVAP-VC, SPK-DSVMV, SPK-DTVS, ⁽⁵⁾ SPK-DVDV, EGR-CKV, EFE-TVS

2 or 3

5.0L (305") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR
EVAP-VC, BP/EGR-TVS, EFE-CKV, EFE-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN H & J)

PCV, ACL, EVAP, OC, FR, BP/EGR, EFE
EVAP-VC, BP/EGR-TVS, EFE-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN L)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁶⁾ AIS, EFE
EVAP-VC, BP/EGR-TVS, ⁽⁶⁾ SPK-DTVS, EFE-CKV, EFE-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS, EFE
EVAP-VC, BP/EGR-TVC, SPK-DTVS

2 or 3

6.6L (403") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁶⁾ AIS, EFE
EVAP-VC, ⁽⁶⁾ BP/EGR-DTVSW, BP/EGR-TCV, SPK-DTVS, ⁽⁷⁾ SPK-AVM

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California & high altitude only.

⁽⁴⁾	Economy Special only.

⁽⁵⁾	A/T with A/C only.

⁽⁶⁾	California only.

⁽⁷⁾	Federal only.

1977 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 EFI

PCV, EVAP, OC, FR, BP/EGR, SPK, AP
EVAP-VC, ⁽³⁾ SPK-DV

2 or 3

7.0L (425") V8 EFI

PCV, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, ⁽³⁾ SPK-DV

2 or 3

7.0L (425") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AP

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾	Vapor canister type.

1977 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl. California

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC

5.7L (350") V8 4-Bbl. Federal

PCV, ACL, EVAP, OC, FR, EGR, ⁽³⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	On L-82 & high altitude engines only.

⁽⁴⁾	On L-48 engine only.

1977 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.4L (86") 4-Cyl. 1-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR

1.6L (98") 4-Cyl. 1-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, ⁽⁴⁾ AIS

2.3L (140") 4-Cyl. 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, AIS

4.2L (250") 6-Cyl. 1-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, ⁽⁴⁾ AIS, EFE

5.0L (305") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁵⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ SPK-DV

5.7L (350") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, ⁽⁵⁾ AIS, EFE

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Vapor canister type.

⁽⁴⁾	California only.

⁽⁵⁾	California, high altitude & L82.

1977 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, SPK-TVS

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁴⁾ AIS, EFE
EVAP-VC, BP/EGR-TVS, ⁽³⁾ SPK-AVM, ⁽⁵⁾ SPK-TCS, ⁽⁶⁾ EFE-CV, EFE-TVS

2 or 3

4.3L (260") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TCVLV, ⁽⁷⁾ BP/EGR-DV, ⁽⁷⁾ SPK-AVM

2 or 3

5.0L (305") V8 2-Bbl.

PCV, ACL, ⁽⁷⁾ EVAP, ⁽⁷⁾ OC, FR, BP/EGR, SPK, ⁽³⁾ AIS, EFE
EVAP-VC, ⁽⁷⁾ BP/EGR-TVS, ⁽⁴⁾ SPK-DV

2 or 3

5.7L (350") V8 4-Bbl. (VIN L)

PCV, ⁽⁴⁾ ACL, ⁽⁷⁾ EVAP, ⁽⁷⁾ OC, FR, EGR, SPK, ⁽⁴⁾ AIS, EFE
EVAP-VC, EGR-TVS, ⁽⁷⁾ EFE-CV

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS
EVAP-VC, ⁽³⁾ BP/EGR-TVS, BP/EGR-TCVLV, ⁽³⁾ SPK-TVS

2 or 3

6.6L (403") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽³⁾ AIS
EVAP-VC, EGR-TVS, EGR-TCVLV, EGR-TVS, ⁽⁴⁾ SPK-TVS, SPK-DV, SPK-EST, ⁽⁷⁾ SPK-AVM

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾	California & high altitude only.

⁽⁵⁾	California M/T only.

⁽⁶⁾	California & Federal only.

⁽⁷⁾	Federal only.

1977 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.3L (140") 4-Cyl. 1-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS
EVAP-VC, EGR-TVS, ⁽³⁾ SPK-TVS, SPK-DV

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, OC, FR, ⁽⁴⁾ EGR, ⁽⁶⁾ BP/EGR, SPK, ⁽⁶⁾ AP, ⁽⁵⁾ PAIR, EFE
EVAP-VC, EGR-TVS, SPK-TVS, SPK-DV, EFE-TVS

2 or 3

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, ⁽⁶⁾ SPK, ⁽³⁾ AIS, EFE
EVAP-VC, BP/EGR-TVS, ⁽⁶⁾ SPK-TCS, EFE-CV, EFE-TVS

2 or 3

5.0L (301") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, ⁽⁷⁾ SPK-TVS, ⁽⁷⁾ SPK-DV, ⁽⁷⁾ SPK-DSVMV, EFE-CV, EFE-TVS

2 or 3

5.0L (305") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, EFE-CV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN L)

PCV, ACL, EVAP, OC, FR, BP/EGR, ⁽³⁾ AIS, EFE
EVAP-VC, BP/EGR-TVS, EFE-CV, EFE-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN P)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS, SPK-DV, EFE-CV

2 or 3

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS
EVAP-VC, ⁽⁶⁾ BP/EGR-TVS, ⁽⁶⁾ SPK-TVS, ⁽⁴⁾ SPK-DV

2 or 3

6.5L (400") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁸⁾ EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS, EFE-CV, EFE-TVS

2 or 3

6.5L (403") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁶⁾ AIS
EVAP-VC, ⁽³⁾ BP/EGR-TVS, SPK-TVS, ⁽⁹⁾ SPK-DV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California and high altitude.

⁽⁴⁾	Federal and high altitude.

⁽⁵⁾	Some Federal.

⁽⁶⁾	California only.

⁽⁷⁾

With A/C.

⁽⁸⁾	Except Firebird.

⁽⁹⁾	Federal only.

1977 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (6000 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁵⁾ EGR, EFE

5.0L (305") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁵⁾ EGR, EFE

5.7L (350") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁵⁾ EGR, ⁽⁸⁾ AIS, EFE

7.4L (454") V8 Carb. ⁽⁷⁾

PCV, ACL, ⁽⁴⁾ EVAP, EGR, AIS, EFE

Heavy Duty Emissions (6001 GVWR Or More) ⁽³⁾

4.1L (250") 6-Cyl. Carb.

PCV, ACL

...

4.8L (292") 6-Cyl. Carb.

PCV, ⁽⁸⁾ ACL, ⁽⁸⁾ ⁽⁴⁾ EVAP

...

5.7L (350") V8 2-Bbl. ⁽⁷⁾

PCV, ACL

...

5.7L (350") V8 4-Bbl.

PCV, ACL, ⁽⁸⁾ EVAP, SPK, ⁽⁸⁾ AIS
EVAP-VC, SPK-SOL, SPK-TCS, ⁽⁶⁾ CCS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁸⁾ ⁽⁴⁾ EVAP, ⁽⁸⁾ AIS

...

6.5L (400") V8 4-Bbl. Carb.

PCV, ACL, ⁽⁸⁾ ⁽⁴⁾ EVAP, ⁽⁸⁾ AIS

...

7.4L (454") V8 4-Bbl. Carb.

PCV, ACL, ⁽⁸⁾ ⁽⁴⁾ EVAP, ⁽⁸⁾ EGR, SPK, ⁽⁸⁾ AIS
⁽⁹⁾ SPK-SOL, SPK-TCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	Vapor canister type.

⁽⁵⁾	BP/EGR used on Calif. & high altitude.

⁽⁶⁾	"C", "K" & "G" Series with A/C only.

⁽⁷⁾	Federal only.

⁽⁸⁾	California only.

⁽⁹⁾	Models with A/C only.

1977 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

403" V8 Carb.

PCV, ACL, EVAP, ⁽³⁾ SPK
SPK-DDD, TRC

...

454" V8 Carb.

PCV, ACL, ⁽³⁾ ⁽⁴⁾ EVAP, ⁽³⁾ EGR, ⁽³⁾ AIS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

⁽⁴⁾	Vapor canister type.

1977 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ ⁽⁵⁾ OC, ⁽⁴⁾ FR, EGR, AIS
CRV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	1976-80 crankcase storage type; 1981 vapor canister type.

⁽⁴⁾	California emissions.

⁽⁵⁾	Except some Federal models.

1978 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

3.2L (196") V6 2-Bbl

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, EGR-TVS, EFE-CKV, EFE-TVS

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, ⁽³⁾ AIS, EFE
EVAP-VC, EGR-TVS, EFE-CKV, EFE-TVS, ⁽⁵⁾ ADS

3.8L (231") V6 2-Bbl. Turbo

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, EGR-TVS, EFE-CKV, EFE-TVS

3.8L (231") V6 4-Bbl. Turbo

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC, EGR-TVS, EFE-CKV, EFE-TVS

4.9L (301") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, ⁽⁴⁾ SPK-DSVMV, SPK-DTVS, ⁽⁴⁾ SPK-DVDV, EFE-CKV

5.0L (305") V8 2-Bbl. & 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, EGR-TVS, EFE-CKV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN L)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁶⁾ AIS, EFE
EVAP-VC, ⁽⁶⁾ EGR-DTVSW, EGR-TVS, EFE-CKV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, ⁽⁶⁾ EGR-DTVSW, SPK-DTVS, SPK-DVDV, SPK-AVM

5.7L (350") V8 4-Bbl. (VIN X)

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN 4)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽³⁾ AIS, EFE
EVAP-VC, SPK-DTVS, ⁽⁶⁾ SPK-DVDV

6.6L (403") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁷⁾ AIS, EFE
EVAP-VC, ⁽⁶⁾ EGR-DTVSW, SPK-DTVS, SPK-DVDV, SPK-AVM

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California & high altitude only.

⁽⁴⁾	A/T with A/C only.

⁽⁵⁾	Century, Regal, Skyhawk & Skylark with M/T.

⁽⁶⁾	California only.

⁽⁷⁾	Except VIN R & K.

1978 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 EFI

PCV, EVAP, OC, FR, BP/EGR, SPK, AP
EVAP-VC, ⁽³⁾ SPK-DTVS, ⁽⁴⁾ SPK-ESS

2 or 3

7.0L (425") V8 EFI

PCV, EVAP, OC, FR, BP/EGR, SPK, ⁽⁵⁾ AP
EVAP-VC, BP/EGR-BPT, SPK-DTVS, ⁽⁶⁾ SPK-DVAS

2 or 3

7.0L (425") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁷⁾ AP, EFE
EVAP-VC, ⁽⁸⁾ ACL-TVS, BP/EGR-TVS, SPK-DTVS, EFE-TVS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California Seville only.

⁽⁴⁾	Seville only.

⁽⁵⁾	California only.

⁽⁶⁾	California DeVille & Brougham only.

⁽⁷⁾	Except Federal models.

⁽⁸⁾	Except California DeVille & Brougham.

1978 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl. California

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC

5.7L (350") V8 4-Bbl. Federal

PCV, ACL, EVAP, OC, FR, EGR, ⁽³⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	On L-82 & high altitude engines only.

⁽⁴⁾	On L-48 engine only.

1978 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 1-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, ⁽⁴⁾ AIS

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, CEC, EFE
EVAP-VC, SPK-DTVS

3.2L (196") V6 2-Bbl. ⁽³⁾

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, EFE

3.3L (200) V6 2-Bbl. ⁽³⁾

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, SPK, EFE

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, ⁽⁴⁾ AIS, EFE
EVAP-VC, EVAP-CPTVS

4.2L (250") 6-Cyl. 1-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, SPK, ⁽⁵⁾ AIS, EFE

5.0L (305") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁴⁾ AIS, EFE
EVAP-VC, ⁽⁵⁾ SPK-DV

5.7L (350") V8 4-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, ⁽⁴⁾ AIS, EFE

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Vapor canister type.

⁽⁴⁾	California, high altitude & L82.

⁽⁵⁾	California only.

1978 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC+OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, SPK-RDVLV, SPK-TVS, EFE-TVS

3.8L (231") V6 2-Bbl. (VIN A)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, EFE-CV, EFE-TVS

2 or 3

4.3L (260") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS
EVAP-VC, BP/EGR-TCV, ⁽³⁾ BP/EGR-TVS, SPK-AVM, ⁽³⁾ SPK-DCKV, SPK-TVS

2 or 3

5.0L (305") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, ⁽³⁾ BP/EGR, SPK, ⁽³⁾ AIS, EFE
EVAP-VC, ⁽³⁾ EVAP-TVS, ⁽³⁾ BP/EGR-TVS, ⁽⁴⁾ SPK-DV, EFE-CV, EFE-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN L) ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, EGR-TVS, EFE-CV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁴⁾ AIS
EVAP-VC, ⁽⁴⁾ BP/EGR-TVS, BP/EGR-TCVLV, ⁽³⁾ SPK-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN X)

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, EVAP-TVS, EGR-TVS, EFE-TVS

6.0L (403") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁴⁾ AIS
EVAP-VC, BP/EGR-TCVLV, BP/EGR-TVS, ⁽³⁾ SPK-TVS, ⁽⁵⁾ SPK-EST

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California & high altitude only.

⁽⁴⁾	California only.

⁽⁵⁾	Toronado only.

1978 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, ⁽³⁾ OC, ⁽⁴⁾ TWC, FR, EGR, SPK, ⁽⁴⁾ AIS, EFE
EVAP-VC, EGR-TVS, SPK-TVS, SPK-DV, EFE-TVS

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, ⁽⁵⁾ AIS, EFE
EVAP-VC, EVAP-CPTVS, BP/EGR-TVS, EFE-CV, EFE-TVS

2 or 3

5.0L (301") V8 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS, SPK-DV, EFE-CV, EFE-TVS

2 or 3

5.0L (301") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, SPK-TVS, SPK-DV, EFE-CV, EFE-TVS

5.0L (305") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁵⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ SPK-DV, ⁽⁵⁾ AIS-DV, ⁽³⁾ EFE-CV, EFE-TVS

5.7L (350") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EFE-CV, EFE-TVS

5.7L (350") V8 4-Bbl. ⁽⁴⁾

PCV, ⁽³⁾ ACL, EVAP, OC, FR, EGR, SPK, ⁽⁵⁾ AIS, EFE
EVAP-VC, EGR-CV, EGR-TVS, SPK-TVS, ⁽⁵⁾ AIS-DV, EFE-CV, EFE-TVS

6.5L (400") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TVS, ⁽⁶⁾ SPK-RDO, SPK-TVS, EFE-CV, EFE-TVS

2 or 3

6.5L (403") V8 4-Bbl. ⁽⁶⁾⁽⁵⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁷⁾ AIS
EVAP-VC, EGR-CV, EGR-TVS, SPK-TVS, AIS-DV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Federal only.

⁽⁴⁾	California only.

⁽⁵⁾	California and high altitude.

⁽⁶⁾

A/T only.

⁽⁷⁾	Except high altitude.

1978 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (6000 GVWR Or Less - Fed.; 8500 GVWR Or Less - Calif.)

4.1L (250") 6-Cyl. 1-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁵⁾ EGR, ⁽⁶⁾ AIS, EFE

5.0L (305") V8 2-Bbl. ⁽⁷⁾

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁵⁾ EGR, EFE

5.7L (350") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁵⁾ EGR, ⁽⁶⁾ AIS, EFE

6.5L (400") V8 4-Bbl. ⁽⁸⁾

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, BP/EGR, AIS, EFE

7.4L (454") V8 4-Bbl.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁵⁾ EGR, AIS, EFE

Heavy Duty Emissions (6001 GVWR Or More - Fed.; 8501 GVWR Or More - Calif.) ⁽³⁾

4.1L (250") 6-Cyl. 1-Bbl.

PCV, ACL

...

4.8L (292") 6-Cyl. 1-Bbl.

PCV, ⁽⁹⁾ ACL, ⁽⁹⁾ ⁽¹⁰⁾ EVAP

...

5.0L (305") V8 2-Bbl.

PCV, ACL, ⁽⁹⁾ ⁽¹⁰⁾ SPK

...

5.7L (350") V8 4-Bbl.

PCV, ACL, ⁽⁹⁾ ⁽¹⁰⁾ EVAP, ⁽⁹⁾ ⁽¹¹⁾ SPK, ⁽⁹⁾ AIS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁹⁾ ⁽¹⁰⁾ EVAP, ⁽⁹⁾ AIS

...

6.5L (400") V8 4-Bbl.

PCV, ACL, ⁽⁹⁾ ⁽¹⁰⁾ EVAP, ⁽⁹⁾ ⁽¹¹⁾ SPK, ⁽⁹⁾ AIS

...

7.4L (454") V8 4-Bbl.

PCV, ACL, ⁽⁹⁾ ⁽¹⁰⁾ EVAP, ⁽⁹⁾ EGR, ⁽⁹⁾ ⁽¹¹⁾ SPK, ⁽⁹⁾ AIS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	High altitude only.

⁽⁵⁾	Except Federal models with A/T.

⁽⁶⁾	Refer to emissions label.

⁽⁷⁾	Calif. S10/15 is electronically controlled.

⁽⁸⁾	Calif. S10/15 only.

⁽⁹⁾	California only.

⁽¹⁰⁾	Vapor canister type.

⁽¹¹⁾	Some are equipped with transmission controlled spark.

1978 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

403" V8 Carb.

PCV, ACL, EVAP, ⁽³⁾ SPK
SPK-DDD, TRC

...

454" V8 Carb.

PCV, ACL, ⁽³⁾ ⁽⁴⁾ EVAP, ⁽³⁾ EGR, ⁽³⁾ AIS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

⁽⁴⁾	Vapor canister type.

1978 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ ⁽⁵⁾ OC, ⁽⁴⁾ FR, EGR, AIS
CRV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	1976-80 crankcase storage type; 1981 vapor canister type.

⁽⁴⁾	California emissions.

⁽⁵⁾	Except some Federal models.

1979 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

3.2L (196") V6 2-Bbl. (VIN C) ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, SPK-AVM, EFE-CKV, EFE-TVS

3.8L (231") V6 2-Bbl. (VIN A & 2)

PCV, ACL, EVAP, ⁽⁴⁾ TWC, FR, EGR, SPK, ⁽⁴⁾ AIS, ⁽⁵⁾ CEC, EFE
EVAP-VC, ACL-TCV, EGR-TVS, ⁽⁶⁾ SPK-DTVS, ⁽⁶⁾ SPK-AVM, EFE-CKV, EFE-TVS

3.8L (231") V6 4-Bbl. Turbo (VIN 3)

PCV, ACL, EVAP, OC, FR,, EGR, AIS, EFE
⁽⁷⁾ ACL-TCV, EVAP-VC, EGR-TVS, EFE-CKV, EFE-TVS

4.9L (301") V8 2-Bbl. (VIN Y)

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DTVS, SPK-DVDV, SPK-RDVLV, EFE-TVS

4.9L (301") V8 4-Bbl. (VIN W)

PCV, ACL, EVAP, OC, EGR, SPK, EFE
EVAP-VC, SPK-DSVMV, SPK-DTVS, SPK-DVDV, EFE-TVS

5.0L (305") V8 4-Bbl. (VIN H)

PCV, ACL, EVAP, OC, FR, EGR, ⁽⁸⁾ AIS, EFE
EVAP-VC, EVAP-CPTVS, SPK-DTVS, SPK-DV, EFE-CKV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN L)

PCV, ACL, EVAP, OC, FR, EGR, ⁽⁸⁾ AIS, EFE
EVAP-VC, EVAP-CPTVS, EFE-CKV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁴⁾ AIS
EVAP-VC, SPK-DTVS, ⁽⁴⁾ EGR-DTVSW, EGR-TCV

5.7L (350") V8 4-Bbl. (VIN X)

PCV, ACL, EVAP, OC, FR, EGR, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, EFE-TVS

6.6L (403") V8 4-Bbl. (VIN K)

PCV, ACL, EVAP, OC, FR, SPK, EGR, ⁽⁴⁾ AIS
EVAP-VC, SPK-DTVS, EGR-DTVSW, EGR-TCV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Federal only.

⁽⁴⁾	California only.

⁽⁵⁾	VIN 2 only.

⁽⁶⁾	Except VIN 2.

⁽⁷⁾	Riviera only.

⁽⁸⁾	California & high altitude only.

1979 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 EFI (VIN B)

PCV, EVAP, TWC, FR, BP/EGR, ⁽³⁾ SPK, ⁽⁴⁾ AP, ⁽⁵⁾ O2S, CEC
EVAP-VC, BP/EGR-BPT, ⁽⁶⁾ SPK-DTVS, SPK-ESS, ⁽⁷⁾ AP-DV

2 or 3

7.0L (425") V8 EFI (VIN T)

PCV, EVAP, OC, FR, BP/EGR, ⁽³⁾ SPK, AP
EVAP-VC, BP/EGR-BPT, SPK-DTVS, SPK-DVAS, AP-DV

2 or 3

7.0L (425") V8 4-Bbl. (VIN S)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁸⁾ AP, EFE
EVAP-VC, BP/EGR-TCV, ⁽⁸⁾ SPK-ESS, ⁽⁸⁾ AP-DV, ⁽⁹⁾ EFE-TVS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California & high altitude only.

⁽⁴⁾	Not used on California Seville.

⁽⁵⁾	California Seville only.

⁽⁶⁾	Except Federal Seville.

⁽⁷⁾	Federal Seville only.

⁽⁸⁾	Except Federal Deville & Brougham.

⁽⁹⁾	Electronically controlled.

1979 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl. California

PCV, ACL, EVAP, OC, FR, EGR, AIS, EFE
EVAP-VC

5.7L (350") V8 4-Bbl. Federal

PCV, ACL, EVAP, OC, FR, EGR, ⁽³⁾ AIS, EFE
EVAP-VC, ⁽⁴⁾ CCS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	On L-82 & high altitude engines only.

⁽⁴⁾	On L-48 engine only.

1979 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽³⁾ AIS
EVAP-VC, ⁽³⁾ EGR-TVS, SPK-DVDV, ⁽³⁾ DCLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN V)

PCV, ACL, EVAP, TWC, FR, EGR, SPK
EVAP-VC, EGR-TVS, SPK-DTVS, SPK-DVDV

2.5L (151") 4-Cyl. 2-Bbl. (VIN 1)

PCV, ACL, EVAP, TWC, FR, EGR, SPK, EFE
EVAP-VC, SPK-DTVV, SPK-VRSW, EFE-TVV, CEAB, CEAB-TVV

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5)

PCV, ACL, EVAP, TWC, FR, EGR, SPK
EVAP-VC, EGR-TVS, SPK-DTVS, SPK-DVDV

2.8L (173") V6 2-Bbl. (VIN 7) ⁽⁴⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, SPK-DTVS, EFE-CV, EFE-TVS, DCLV

2.8L (173") V6 2-Bbl. (VIN 7) ⁽⁵⁾

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, EFE
EVAP-VC, EVAP-CPTVS, BP/EGR-TVS, SPK-DTVS, SPK-DVDV, AIS-SV, EFE-CV, EFE-TVS, DCLV

2 or 3

3.2L (196") V6 2-Bbl. (VIN C) ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, SPK-DSVMV, SPK-DTVS, EFE-CV, EFE-TVS

3.3L (200") V6 2-Bbl. (VIN M) ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, SPK-DTVS, EFE-TVS

3.8L (231") V6 2-Bbl. (VIN A)

PCV, ACL, EVAP, OC, ⁽⁵⁾ TWC, FR, BP/EGR, SPK, ⁽³⁾ AP, EFE
EVAP-VC, EVAP-CPTVS, ACL-TCV, BP/EGR-TVS, SPK-DTVS, ⁽⁶⁾ SPK-DVDV, SPK-DSVMV, ⁽³⁾ AP-DV, EFE-CV, EFE-TVS

2 or 3

4.2L (250") 6-Cyl. 1-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁵⁾ AP, EFE
EVAP-VC, EGR-TVS, ⁽⁴⁾ SPK-DVDV, ⁽⁵⁾ SPK-DTVS, ⁽⁵⁾ AP-DV, EFE-TVS

4.3L (267") V8 2-Bbl.. (VIN J) ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, SPK-DTVS, EFE-TVS

5.0L (305") V8 2-Bbl. (VIN G)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁵⁾ AP, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, ⁽⁶⁾ SPK-DTVS, ⁽⁵⁾ AP-DV, EFE-TVS

5.0L (305") V8 4-Bbl. (VIN H)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁷⁾ AP, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, ⁽⁴⁾ SPK-DTVS, ⁽⁷⁾ AP-DV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN L)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁵⁾ AP
EVAP-VC, EVAP-CPTVS, EGR-TVS, SPK-DTVS, ⁽⁷⁾ AP-DV

5.7L (350") V8 4-Bbl. (VIN 4 & 8)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁸⁾ AP, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, ⁽⁹⁾ SPK-DTVS, ⁽⁸⁾ AP-DV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California & high altitude.

⁽⁴⁾	Federal only.

⁽⁵⁾	California only.

⁽⁶⁾	California M/T only.

⁽⁷⁾	California, high altitude & L82.

⁽⁸⁾	Except some Federal VIN 4.

⁽⁹⁾	Used on some VIN 4 only.

1979 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl. (VIN V)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, BP/EGR-TVS, SPK-TVS, SPK-RDVLV

2 or 3

2.5L (151") 4-Cyl. 2-Bbl. (VIN 1)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, O2S, CEC, EFE
EVAP-VC, EFE-DTVS, CEAB, CEAB-TVS

2 or 3

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) Omega

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS
EVAP-VC, BP/EGR-TVS, SPK-TVS, SPK-DV, ⁽⁴⁾ SPK-VRSW

2 or 3

2.8L (173") V6 2-Bbl. (VIN 7)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, SPK-TVS, ⁽³⁾ SPK-DV, AIS-SV, EFE-TVS, ⁽³⁾ EFE-CV

2 or 3

3.8L (231") V6 2-Bbl. (VIN A & 2)

PCV, ACL, EVAP, ⁽³⁾ TWC+OC, FR, BP/EGR, SPK, ⁽³⁾ ⁽⁵⁾ AIS, ⁽³⁾ CEC, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, ⁽⁶⁾⁽⁵⁾ SPK-AVM, ⁽⁵⁾ SPK-TVS, ⁽³⁾⁽⁵⁾ SPK-DV, EFE-CV, EFE-TVS

2 or 3

4.3L (260") V8 2-Bbl. (VIN F)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK
EVAP-VC, BP/EGR-TCVLV, SPK-TVS, ⁽³⁾ SPK-DV, ⁽⁷⁾ SPK-AVM

2 or 3

5.0L (301") V8 2-Bbl. (VIN Y) ⁽⁸⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, SPK-TVS, SPK-DVRV, SPK-RDVLV, EFE-TVS

2 or 3

5.0L (305") V8 2-Bbl. (VIN G)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽³⁾ AIS, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, ⁽⁹⁾ SPK-DV, ⁽⁹⁾ SPK-TVS, EFE-CV, ⁽³⁾ EFE-DTVS, EFE-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN L) ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, EFE-CV, EFE-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS
EVAP-VC, ⁽³⁾ BP/EGR-TVS, BP/EGR-TCVLV, ⁽⁶⁾ SPK-TVS, ⁽¹⁰⁾ SPK-DV

2 or 3

6.6L (403") V8 4-Bbl. (VIN K)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁶⁾ AIS, EFE
EVAP-VC, ⁽⁶⁾ EVAP-TVS, BP/EGR-TVS, BP/EGR-TCVLV, ⁽⁶⁾ SPK-TVS, ⁽¹⁰⁾ SPK-DV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾	Except California.

⁽⁵⁾	Except VIN 2.

⁽⁶⁾	California & high altitude only.

⁽⁷⁾	Federal & high altitude.

⁽⁸⁾	Federal only.

⁽⁹⁾	Omega only.

⁽¹⁰⁾	High altitude only.

1979 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl. (VIN V) ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK
EVAP-VC, EVAP-CPTVS, EGR-TVS, SPK-DV, SPK-TVS

2.5L (151") 4-Cyl. 2-Bbl. (VIN 1) ⁽⁴⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, CEC, EFE
EVAP-VC, EGR-TVS, EFE-TVS, CEAB, CEAB-TVS, CESS

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, OC, ⁽⁴⁾ TWC, FR, BP/EGR, SPK, ⁽⁵⁾ AIS, EFE
EVAP-VC, ⁽⁵⁾ EVAP-CPTVS, BP/EGR-TVS, SPK-TVS, SPK-DSVMV, EFE-CV, EFE-TVS

2 or 3

4.9L (301") V8 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS, SPK-DV, SPK-DSVMV, EFE-CV, EFE-TVS

2 or 3

4.9L (301") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, SPK-TVS, ⁽⁶⁾ SPK-DV, ⁽⁶⁾ SPK-DSVMV, EFE-CV, EFE-TVS

5.0L (305") V8 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, SPK-TVS, AP-DV, EFE-TVS, EFE-CV

5.0L (305") V8 4-Bbl. ⁽⁵⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, AP-DV, EFE-CV

5.7L (350") V8 4-Bbl. (VIN L) ⁽⁵⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EVAP-TVS, EGR-TVS, AP-DV, EFE-CV

5.7L (350") V8 4-Bbl. (VIN R)

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, EGR-TVV, SPK-TVS, AP-DV

5.7L (350") V8 4-Bbl. (VIN X) ⁽⁵⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, EFE
EVAP-VC, EVAP-TVS, EGR-TVS, EFE-TVS

6.5L (400") V8 4-Bbl. (VIN Z)

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS, SPK-DSVMV, EFE-CV, EFE-TVS

2 or 3

6.6L (403") V8 4-Bbl. (VIN K)

PCV, ACL, EVAP, OC, FR, EGR, SPK, ⁽⁴⁾ AP
EVAP-VC, EGR-TVV, ⁽⁴⁾ EGR-TVS, ⁽⁴⁾ AP-DV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Federal only.

⁽⁴⁾	California only.

⁽⁵⁾	California and high altitude.

⁽⁶⁾

A/T only.

1979 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (8500 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, EGR, ⁽⁵⁾ SPK, ⁽⁶⁾ PAIR, EFE

5.0L (305") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, BP/EGR, ⁽⁵⁾ SPK, EFE

5.7L (350") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, BP/EGR, ⁽⁵⁾ SPK, ⁽⁷⁾ AIS, EFE

6.5L (400") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁸⁾ EGR, ⁽⁵⁾ SPK, ⁽⁶⁾ AIS, EFE

7.4L (454") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, OC, FR, ⁽⁸⁾ EGR, ⁽⁵⁾ SPK, AIS, EFE

Heavy Duty Emissions (8501 GVWR Or More) ⁽³⁾

4.1L (250") 6-Cyl. Carb.

PCV, ACL, ⁽⁵⁾ SPK

...

4.8L (292") 6-Cyl. Carb.

PCV, ACL, ⁽⁶⁾ ⁽⁴⁾ EVAP, ⁽⁵⁾ SPK, AIS

...

5.0L (305") V8 Carb.

PCV, ACL, ⁽⁵⁾ ACL

...

5.7L (350") V8 Carb.

PCV, ACL, ⁽⁶⁾ ⁽⁴⁾ EVAP, ⁽⁵⁾ SPK, AIS, ⁽⁹⁾ EFE

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁶⁾ ⁽⁴⁾ EVAP, AIS

...

6.5L (400") V8 Carb.

PCV, ACL, ⁽⁶⁾ ⁽⁴⁾ EVAP, ⁽⁴⁾ SPK, AIS, EFE

...

7.4L (454") V8 Carb.

PCV, ACL, ⁽⁶⁾ ⁽⁴⁾ EVAP, ⁽⁹⁾ EGR, ⁽⁵⁾ SPK, AIS, EFE
TRC

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	Vapor canister type.

⁽⁵⁾	Some are equipped with transmission controlled spark.

⁽⁶⁾	California only.

⁽⁷⁾	California and Federal high altitude automatic.

⁽⁸⁾	Refer to emissions label.

⁽⁹⁾	Some models.

1979 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

454" V8 Carb.

PCV, ACL, ⁽³⁾ EVAP, ⁽³⁾ EGR, ⁽³⁾ SPK, AIS, EFE
EVAP-VC, SPK-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

1979 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ ⁽⁵⁾ OC, ⁽⁴⁾ FR, EGR, AIS
CRV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	1976-80 crankcase storage type; 1981 vapor canister type.

⁽⁴⁾	California emissions.

⁽⁵⁾	Except some Federal models.

1980 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, ⁽⁴⁾ SPK, CEC, EFE
EVAP-VC, ⁽⁵⁾ SPK-DTVS, ⁽⁴⁾ SPK-RDVLV, ⁽⁵⁾ EGR-TVS, DCLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) ⁽⁶⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, CEC, EFE
EVAP-VC, EGR-TVS, DCLV

2.8L (173") V6 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, CEC, EFE
EVAP-VC, EVAP-CPTVS, EVAP-TPCV, EGR-TVS, EFE-TVS, DCLV

2.8L (174") V6 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, PAIR, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, EFE-TVS, DCLV

3.8L (231") V6 2-Bbl. (VIN A) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, AIS-VCV, EFE-TVS

3.8L (231") V6 2-Bbl. (VIN A) ⁽⁶⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, ⁽⁷⁾ CEC, EFE
EVAP-VC, ⁽⁵⁾ EVAP-CPTVS, EGR-TVS, ⁽⁴⁾ SPK-DTVS, AP-ACV, EFE-TVS, NLV

3.8L (231") V6 4-Bbl. Turbo (VIN 3) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, EFE
EVAP-VC, EVAP-CPTVS, EGR-SOL, AP-VCV, AP-ASV, AP-DV, EFE-SOL

3.8L (231") V6 4-Bbl. Turbo (VIN 3) ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TS, AP-ACV, AP-DV, EFE-TVS

4.1L (252") V6 4-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, AP-ACV, EFE-TVS, NLV

4.3L (265") V8 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, SPK-DV, SPK-TVS, AP-DV

4.9L (301") V8 4-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, SPK-DTVS, AP-DV, EFE-TVS

5.0L (305") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, AP-DV, EFE-TVS

5.0L (305") V8 4-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, ⁽⁴⁾ AP-VCV, ⁽⁴⁾ AP-DV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN R) ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, CEC
EVAP-VC, EVAP-CPTVS, EGR-TVS, SPK-DTVS, SPK-AVM

5.7L (350") V8 4-Bbl. (VIN R) ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, SPK-DV

5.7L (350") V8 4-Bbl. (VIN X) ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, EVAP-CPTVS, EFE-TVS, NLV, DKV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾	Some models.

⁽⁵⁾

M/T only.

⁽⁶⁾	Federal only.

⁽⁷⁾	Some Federal models. See California listing.

1980 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

4.1L (252") V6 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, EFE
EVAP-VC, BP/EGR-TVS, SPK-ESS, SPK-DTVS, AP-ACV, EFE-TVS, NLV

2 or 3

5.7L (350") V8 EFI ⁽⁴⁾

PCV, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S
EVAP-VC, BP/EGR-SOL, SPK-ESS, AP-SV, AP-ACV

2 or 3

6.0L (368") V8 EFI ⁽³⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AP, EFE
EVAP-VC, EVAP-TVS, BP/EGR-SOL, SPK-ESS, AP-DV, EFE-TVS

2 or 3

6.0L (368") V8 4-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, EFE
EVAP-VC, BP/EGR-DTVSW, SPK-ESS, AP-ACV

2 or 3

6.0L (368") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AP, EFE
EVAP-VC, BP/EGR-DTVSW, SPK-ESS, AP-DV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Federal only.

⁽⁴⁾	California only.

1980 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.0L (305") V8 4-Bbl. California

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC, MIL, EFE
EVAP-VC, SPK-EST, EFE-TVS

5.0L (305") V8 4-Bbl. Federal

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, SPK-TVS, EFE-TVS

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, AP-DV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

1980 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.9L (98") 4-Cyl. 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, CEC
EVAP-VC, EVAP-CPTVS, EGR0TVS, DCLV

1.6L (98") 4-Cyl. 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, DCLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN V) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, CEC, EFE
EVAP-VC, EGR-TVS, SPK-TVS, DCLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN V) ⁽⁴⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, CEC, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, SPK, TVS, DCLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, CEC, EFE
EVAP-VC, ⁽⁵⁾ EGR-TVS, ⁽⁵⁾ SPK-DTVS, ⁽⁶⁾ SPK-RDVLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) ⁽⁴⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, DCLV

2.8L (173") V6 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE, MIL
EVAP-VC, EVAP-CPTVS, EGR-TVS, EFE-TVS, DCLV

2.8L (173") V6 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, PAIR, EFE
EVAP-VC, EVAP-TPCV, EVAP-CPTVS, EGR-TVS, EFE-TVS, DCLV

3.8L (229") V6 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, AP-DV, EFE-TVS

3.8L (231") Turbo V6 (VIN 3) ⁽³⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-SOL, AP-ACV, AP-DV, EFE-SOL

3.8L (231") Turbo V6 (VIN 3) ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, AP-ACV, AP-DV, EFE-TVS

3.8L (231") V6 2-Bbl. (VIN A) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, AIS-AMV, EFE-TVS

3.8L (231") V6 2-Bbl. (VIN A) ⁽⁴⁾⁽⁷⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, ⁽⁷⁾ CEC, EFE
EVAP-VC, ⁽⁵⁾ EVAP-CPTVS, EGR-TVS, ⁽⁶⁾ SPK-DTVS, AIS-AMV, EFE-TVS, NLV

4.3L (267") V8 2-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, AP-DV, EFE-TVS

5.0L (305") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, SPK, ⁽⁶⁾ AP, O2S, CEC, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, AP-DV, EFE-TVS

5.0L (305") V8 4-Bbl. ⁽⁴⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, ⁽⁶⁾ AP-ACV, ⁽⁶⁾ AP-DV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN L)

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, AP-DV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN 6 & 8)

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-DTVS, AP-DV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾	Federal only.

⁽⁵⁾

M/T only.

⁽⁶⁾	Some models.

⁽⁷⁾	Some Federal models use C-4. See California listing.

1980 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl. (VIN V)

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS

2 or 3

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC, EFE
EVAP-VC, BP/EGR-TVS, ⁽⁴⁾ SPK-TVS, ⁽⁵⁾ SPK-RDVLV

2 or 3

2.5L (151") 4-Cyl. (VIN 5) ⁽⁶⁾

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, CEC, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS

2 or 3

2.8L (173") V6 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, AIS, CEC, EFE
EVAP-VC, EVAP-TVS, EVAP-TPCV, BP/EGR-TVS, SPK-EST, EFE-TVS

2 or 3

2.8L (173") V6 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, PAIR, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, SPK-EST, EFE-TVS

2 or 3

3.8L (231") V6 2-Bbl. (VIN A) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, AP, CEC, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, AP-ACV, SPK-EST, EFE-TVS

2 or 3

3.8L (231") V6 2-Bbl. (VIN A) ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AP, EFE
EVAP-VC, ⁽⁴⁾ EVAP-TVS, BP/EGR-TVS, SPK-TVS, AP-ACV, EFE-TVS, NLV

2 or 3

4.3L (260") V8 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, SPK-AVM, SPK-DV, EFE-DTVS

2 or 3

5.0L (305") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, O2S, AP, CEC, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS, AP-DV, EFE-TVS

2 or 3

5.0L (305") V8 4-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AP, EFE
EVAP-VC, BP/EGR-TVS, SPK-TVS, ⁽⁵⁾ AP-ACV, ⁽⁵⁾ AP-DV, EFE-TVS

2 or 3

5.0L (307") V8 4-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, SPK-AVM, SPK-DV

2 or 3

5.7L (350") V8 4-Bbl. (VIN R) ⁽³⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, O2S, AP, CEC
EVAP-VC, BP/EGR-TVS, SPK-TVS

2 or 3

5.7L (350") V8 4-Bbl. (VIN R) ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS
EVAP-VC, EVAP-TVS, BP/EGR-TVS, SPK-DV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾

M/T only.

⁽⁵⁾	Some models.

⁽⁶⁾	Federal only.

1980 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl. (VIN V)

PCV, ACL, EVAP, TWC, FR, EGR, SPK, ⁽³⁾ O2S, ⁽³⁾ CEC, EFE
EVAP-VC, EGR-TVS, SPK-TVS, DCLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, CEC, EFE
EVAP-VC, ⁽⁴⁾ EGR-TVS, ⁽⁴⁾ SPK-TVS, ⁽⁵⁾ SPK-RDVLV

2.5L (151") 4-Cyl. 2-Bbl. (VIN 5) ⁽⁶⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, EFE
EVAP-VC, EGR-TVS, SPK-TVS, DCLV

2.8L (173") V6 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, CEC, EFE
EVAP-VC, EVAP-TPCV, EGR-TVS, SPK-DTVS, EFE-TVS, DCLV

2.8L (173") V6 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, PAIR, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, EFE-TVS, DCLV

3.8L (229") V6 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EFE-TVS, ⁽⁵⁾ EGR-TVS, AP-DV

3.8L (231") V6 2-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, AP-ACV, EFE-TVS

3.8L (231") V6 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, EFE
EVAP-VC, ⁽⁴⁾ EVAP-CPTVS, ⁽⁵⁾ SPK-TVS, EGR-TVS, AIS-ACV, EFE-TVS, NLV

4.3L (265") V8 2-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, SPK-TVS, SPK-DV, AP-ACV

4.9L (301") V8 4-Bbl. ⁽⁶⁾

PCV, ACL, ⁽⁷⁾ EVAP, OC, FR, EGR, SPK, EFE

5.0L (305") V8 Turbo ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EGR-TVS, SPK-TVS, AP-DV

5.0L (305") V8 4-Bbl. ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, SPK-TVS, AP-DV, EFE-TVS

5.0L (305") V8 4-Bbl. ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, CEC, EFE
EVAP-VC, EGR-TVS, SPK-TVS, AP-DV, EFE-TVS

5.7L (350") V8 4-Bbl. (VIN R) ⁽³⁾

PCV, ACL, EVAP, TWC, FR, EGR, SPK, CEC
EVAP-VC, EVAP-CPTVS, EGR-DTVSW, SPK-TVS, SPK-AVM

5.7L (350") V8 4-Bbl. (VIN X) ⁽⁶⁾

PCV, ACL, EVAP, OC, FR, EGR, SPK, AP, EFE
EVAP-VC, EVAP-CPTVS, EGR-TVS, AP-ACV, EFE-TVS, NLV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California only.

⁽⁴⁾

M/T only.

⁽⁵⁾	Some models.

⁽⁶⁾	Federal only.

⁽⁷⁾	Vapor canister type.

1980 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (8500 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, OC, FR, ⁽⁴⁾ EGR, SPK, PAIR, EFE
EVAP-VC, EGR-TVS, SPK-DV, SPK-TVS, EFE-TVS, ⁽⁵⁾ DCLV

5.0L (305") V8 Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TVS, SPK-DV, EFE-TVS

5.7L (350") V8 Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁴⁾ AP, EFE
EVAP-VC, BP/EGR-TVS, SPK-DV, ⁽⁴⁾ AP-DV, EFE-TVS

6.5L (400") V8 Carb.

PCV, ACL, ⁽⁶⁾ EVAP, OC, FR, EGR, ⁽⁷⁾ SPK, ⁽⁸⁾ AIS, EFE

Heavy Duty Emissions (8501 GVWR Or More) ⁽³⁾

4.8L (292") 6-Cyl. Carb.

PCV, ACL, ⁽⁸⁾ EVAP, SPK, AP
EVAP-VC, SPK-DV, SPK-TVS, AP-DV

...

5.7L (350") V8 Carb.

PCV, ACL, ⁽⁸⁾ EVAP, SPK, ⁽⁸⁾ AP, ⁽⁴⁾ EFE
EVAP-VC, SPK-DV, SPK-TVS, AP-DV, ⁽⁴⁾ EFE-TVS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁸⁾ ⁽⁶⁾ EVAP, AIS

...

6.5L (400") V8 Carb.

PCV, ACL, ⁽⁸⁾ EVAP, SPK, AP, ⁽⁴⁾ EFE
EVAP-VC, SPK-DV, SPK-TVS, AP-DV, ⁽⁴⁾ EFE-TVS

...

7.4L (454") V8 Carb.

PCV, ACL, ⁽⁸⁾ EVAP, SPK, AP, ⁽⁴⁾ EFE
EVAP-VC, SPK-TVS, AP-DV, ⁽⁴⁾ EFE-TVS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	Some models.

⁽⁵⁾	Except Federal models with A/T.

⁽⁶⁾	Vapor canister type.

⁽⁷⁾	Some are equipped with transmission controlled spark.

⁽⁸⁾	California only.

1980 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

454" V8 Carb.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ EGR, ⁽³⁾ SPK, AIS, EFE
EVAP-VC, SPK-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

⁽⁴⁾	Some models.

1980 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ ⁽⁵⁾ OC, ⁽⁴⁾ FR, EGR, AIS
CRV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	1976-80 crankcase storage type; 1981 vapor canister type.

⁽⁴⁾	California emissions.

⁽⁵⁾	Except some Federal models.

1981 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC
EVAP-VC, EGR-TVV, SPK-CC, AP-DV

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, EGR-TVS, SPK-CC, AP-ACV, DCLV

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EGR-SOL, SPK-CC, AP-VCV, EFE-SOL

3.8L (231") V6 4-Bbl. Turbo

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, SPK-CC, AP-DV, EFE-SOL

4.1L (252") V6 4-Bbl.

PCV, ACL, EVAP, OC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-CC, AP-VCV, EFE-SOL

4.3L (265") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-CPTVS, EGR-SOL, SPK-CC, AP-ACV, EFE-TVS

4.4L (267") V8 2-Bbl.

PCV, ACL, EVAP, OC, FR, ⁽³⁾ EGR, SPK, AIS, O2S, CEC, EFE
EVAP-CPCS, EGR-SOL, SPK-CC, EFE-TVV

5.0L (305") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-CPTVS, EGR-SOL, SPK-CC, AP-ACV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

1981 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.8L (113") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EVAP-FTCV, BP/EGR-TVS, SPK-EST, DCLV

2 or 3

4.1L (262") V6 MFI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EGR-SOL, AP-ACV, ⁽⁴⁾ SPK-ESC, SPK-EST, EFE-SOL

6.0L (368") V8-6-4 DFI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE, MIL
EVAP-VC, EVAP-CPCS, EGR-SOL, SPK-EST, AP-CKV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

⁽⁴⁾	Some models.

1981 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-TVS, EGR-SOL, SPK-EST, AP-ACV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

1981 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, FR, EGR, SPK, PAIR, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, SPK-EST, DCLV

1.8L (111") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, BP/EGR-TVS, SPK-EST, DCLV

2 or 3

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, BP/EGR-TVV, SPK-EST, AP-DV

2 or 3

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, BP/EGR-TVS, AP-ACV, SPK-EST, DCLV

2 or 3

3.8L (229") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC
EVAP-CPTVS, EGR-SOL, SPK-DTVS, SPK-EST, AP-ACV

2 or 3

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EGR-SOL, SPK-EST, AP-ACV, EFE-SOL

3.9L (231") Turbo V6 4-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-EST, AP-DV

4.4L (257") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-EST, AP-ACV, EFE-TVS

5.0L (305") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-EST, AP-ACV, EFE-TVS

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, AP, SPK, O2S, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-EST, AP-ACV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

1981 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC
EVAP-VC, EGR-TVV, SPK-EST, AP-DV

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, EGR-TVS, SPK-EST

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, BP/EGR-SOL, SPK-EST, AP-ACV, EFE-SOL

2 or 3

4.1L (252") V6 4-Bbl.

PCV. ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-TVS, BP/EGR-SOL, SPK-EST, AP-ACV, EFE-SOL

2 or 3

4.3L (260") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, SPK-EST, EFE-TVS

2 or 3

4.4L (267") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-TVS, BP/EGR-SOL, SPK-EST, AP-ACV, EFE-TVS

2 or 3

5.0L (305") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-TVS, BP/EGR-SOL, SPK-EST, AP-ACV, EFE-TVS

2 or 3

5.0L (307") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-TVS, BP/EGR-SOL, SPK-EST, EFE-TVV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

1981 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, SPK-CC, DCLV

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, BP/EGR-TVV, SPK-CC, AP-DV

2 or 3

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, EGR-TVS, SPK-CC, AP-ACV, DCLV

2 or 3

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EGR-SOL, SPK-CC, AP-ACV, EFE-SOL

4.3L (265") V8 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EGR-SOL, SPK-CC, EFE-TVV

4.4L (267") V8 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-CC, AP-ACV, EFE-TVS

4.9L (301") V8 4-Bbl. Non-Turbo

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, AP-ACV, SPK-CC, EFE-TVV

4.9L (301") V8 4-Bbl. Turbo

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, EGR-SOL, SPK-CC, AP-ACV

5.0L (305") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-CC, AP-ACV, EFE-TVS

5.0L (307") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPTVS, EGR-SOL, SPK-CC, EFE-TVV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

1981 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (8500 GVWR Or Less)

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁴⁾ ⁽⁵⁾ AIS, EFE
EVAP-VC, EVAP-TVS, BP/EGR-TVS, SPK-RDVLV, EFE-TVS, ⁽⁶⁾ DCLV

5.0L (305") V8 Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, EFE
EVAP-VC, BP/EGR-TVS, SPK-DV, EFE-TVS

5.7L (350") V8 Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS, EFE
EVAP-VC, BP/EGR-TVS, SPK-DV, SPK-TVS, EFE-TVS, DCLV

Heavy Duty Emissions (8501 GVWR Or More) ⁽³⁾

4.8L (292") 6-Cyl. Carb.

PCV, ACL, ⁽⁴⁾ EVAP, SPK, AP
EVAP-VC, SPK-DV, SPK-TVS, AP-DV

...

5.0L (305") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, BP/EGR, SPK, AIS, EFE
EVAP-VC, BP/EGR-TVS, SPK-DV, SPK-TVS, EFE-TVS

5.7L (350") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, SPK, AIS, EFE
EVAP-VC, SPK-DV, SPK-TVS, EFE-TVS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁴⁾ ⁽⁷⁾ EVAP, AIS

...

7.4L (454") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, SPK, AIS, EFE
EVAP-VC, SPK-TVS, EFE-TVS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	California only.

⁽⁵⁾	Some with A/T use PAIR.

⁽⁶⁾	Except Federal models with A/T.

⁽⁷⁾	Vapor canister type.

1981 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

454" V8 Carb.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ EGR, ⁽³⁾ SPK, AIS, EFE
EVAP-VC, SPK-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

⁽⁴⁾	Some models.

1981 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ ⁽⁵⁾ OC, ⁽⁴⁾ FR, EGR, AIS
CRV

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	1976-80 crankcase storage type; 1981 vapor canister type.

⁽⁴⁾	California emissions.

⁽⁵⁾	Except some Federal models.

1982 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.8L (112") 4-Cyl. EFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, BP/EGR-BPV, SPK-CC

2 or 3

1.8L (112") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-FBVV, EVAP-TPCV, BP/EGR-BPV, SPK-CC, AP-AMV, DCLV

2 or 3

2.0L (122") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-FBVV, EVAP-TPCV, BP/EGR-BPV, SPK-CC, AP-AMV, DCLV

2 or 3

2.5L (151") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-BPV, SPK-CC

2 or 3

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-FBVV, EVAP-TPCV, EGR-BPV, ⁽⁴⁾ EGR-SOL, EGR-TVS, SPK-CC, AP-AMV, DCLV

3.0L (181") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-CC

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-CC

4.1L (252") V6 4-Bbl.

PCV, ACL, EVAP, OC, FR, ⁽³⁾ EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-CC

5.0L (307") V8 4-Bbl.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCV, EVAP-CPTVS, BP/EGR-BPV, SPK-CC, AP-VCV, EFE-TVS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Refer to underhood emissions label.

⁽⁴⁾	Some models.

1982 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.8L (113") 4-Cyl. EFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, BP/EGR-BPV, SPK-EST

2 or 3

1.8L (113") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVV, EVAP-TPCV, BP/EGR-BPV, SPK-EST, AP-AMV, DCLV

2 or 3

2.0L (122") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVV, EVAP-TPCV, EVAP-CPCS, BP/EGR-BPV, SPK-EST, AP-AMV, DCLV

2 or 3

4.1L (250") V8 MFI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EGR-BPV, EGR-SOL, SPK-EST, ⁽⁴⁾ SPK-ESC, AP-AMV

4.1L (252") V6 4-Bbl.

PCV, ACL, ⁽⁵⁾ EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE

6.0L (368") V8 MFI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EGR-BPV, EGR-SOL, SPK-EST, AP-ACV, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

⁽⁴⁾	Some models.

⁽⁵⁾	Vapor canister type.

1982 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 EFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, BP/EGR-BPV, BP/EGR-SOL, SPK-EST, AP-ACV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

1982 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, ⁽³⁾ EVAP-CPCS, EVAP-TPCV, BP/EGR-BPV, SPK-EST, DCLV

2 or 3

1.8L (111") 4-Cyl. EFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, BP/EGR-BPV, SPK-EST

2 or 3

1.8L (111") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, BP/EGR-BPV, SPK-EST, AIS-AMV, DCLV

2 or 3

2.0L (122") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-TPCV, BP/EGR-BPV, SPK-EST, AIS-AMV, DCLV

2 or 3

2.5L (151") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, ⁽⁴⁾ EVAP-CPCS, ⁽⁵⁾ EVAP-CPCV, BP/EGR-BPV, SPK-EST

2 or 3

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-TPCV, EVAP-CPCS, BP/EGR-BPV, BP/EGR-SOL, BP/EGR-TVS, SPK-EST, AIS-AMV, DCLV

2 or 3

3.8L (229") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EVAP-CPTVS, BP/EGR-BPV, BP/EGR-SOL, SPK-EST, AIS-AMV, EFE-TVS

2 or 3

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽⁶⁾ EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-EST

4.4L (267") V6 2-Bbl.

PCV, ACL, EVAP, VC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EVAP-CPTVS, BP/EGR-BPV, BP/EGR-SOL, SPK-EST, AIS, AMV, EFE-TVS

2 or 3

5.0L (307") V8 4-Bbl. & 5.0L (305") V8 TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EVAP-CPTVS, BP/EGR-BPV, BP/EGR-SOL, SPK-EST, AP-AMV, EFE-TVS

2 or 3

5.7L (350") V8 EFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCS, BP/EGR-BPV, BP/EGR-SOL, SPK-EST, AP-ACV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾

M/T only.

⁽⁴⁾

Camaro.

⁽⁵⁾	Celebrity & Citation.

⁽⁶⁾	Electronically controlled.

1982 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.8L (112") 4-Cyl. EFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, BP/EGR-BPV, SPK-EST

2 or 3

1.8L (112") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVS, EVAP-TPCV, EVAP-CPCS, BP/EGR-BPV, SPK-EST, AP-AMV

2 or 3

2.0L (122") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVS, EVAP-TPCV, EVAP-CPCS, BP/EGR-BPV, SPK-EST, AP-AMV

2 or 3

2.5L (151") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-BPV, SPK-EST

2 or 3

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVV, EVAP-TPCV, EVAP-CPCS, EGR-BPV, ⁽⁴⁾ EGR-SOL, EGR-TVS, SPK-EST, AP-AMV

2 or 3

3.0L (181") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-EST

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-EST

4.1L (252") V6 4-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-EST

4.3L (260") V8 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EVAP-TVS, BP/EGR-BPV, SPK-EST, AP-ACV, EFE-TVS

2 or 3

5.0L (307") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCV, EVAP-TVS, BP/EGR-BPV, SPK-EST, AP-ACV, EFE-TVS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

⁽⁴⁾	Some models.

1982 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, ⁽³⁾ EVAP-CPCS, EVAP-TPCV, BP/EGR-BPV, SPK-CC, DCLV

2 or 3

1.8L (112") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, BP/EGR-BPV, SPK-CC

2 or 3

1.8L (112") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVV, EVAP-TPCV, EVAP-CPCS, BP/EGR-BPV, SPK-CC, AP-AMV, DCLV

2 or 3

2.0L (122") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVV, EVAP-TPCV, EVAP-CPCS, BP/EGR-BPV, SPK-CC, AP-AMV, DCLV

2 or 3

2.5L (151") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, ⁽⁴⁾ EVAP-CPCS, ⁽⁵⁾ EVAP-CPCV, BP/EGR-BPV, SPK-CC

2 or 3

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-FBVV, EVAP-TPCV, EVAP-CPCS, BP/EGR-BPV, ⁽⁶⁾ BP/EGR-SOL, BP/EGR-TVS, SPK-CC, AP-AMV, DCLV

2 or 3

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-CC

4.1L (252") V6 4-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, SPK-CC

5.0L (307") V8 4-Bbl. & 5.0L (305") V8 TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EVAP-CPTVS, BP/EGR-BPV, BP/EGR-SOL, SPK-CC, AP-AMV, EFE-TVS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Some models.

⁽⁴⁾

Firebird.

⁽⁵⁾	Phoenix and 6000.

⁽⁶⁾	Some applications.

1982 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (8500 GVWR Or Less)

1.9L (116") 4-Cyl. Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS, ⁽⁴⁾ CEC
EVAP-VC, ACL-BMS, ACL-VM, BP/EGR-BPT, BP/EGR-DV, BP/EGR-TVS, SPK-DVRV, HIC

2.8L (173") V6 Carb.

PCV, ACL, EVAP, OC, ⁽⁴⁾ TWC, FR, ⁽⁵⁾ BP/EGR, SPK, AIS, ⁽⁴⁾ O2S, ⁽⁶⁾ CEC
EVAP-VC, ACL-BMS, ACL-VM, EVAP-CPTVS, ⁽⁷⁾ BP/EGR-BS, BP/EGR-TVS, ⁽⁸⁾ BP/EGR-TCTVS, ⁽⁷⁾ SPK-DV, ⁽⁹⁾ SPK-DRCV, DCLV

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁴⁾ PAIR, EFE
EVAP-VC, ACL-BMS, EVAP-TVS, ⁽⁹⁾ BP/EGR-BS, ⁽⁹⁾ BP/EGR-RST, BP/EGR-TVS, SPK-RDVLV, ⁽⁴⁾ PAIR-DV, EFE-TVS

5.0L (305") V8 Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, ⁽⁷⁾ AIS, EFE
EVAP-VC, ACL-BMS, ACL-VM, ⁽⁴⁾ BP/EGR-BS, BP/EGR-TVS, ⁽⁹⁾ SPK-DVRV, ⁽⁴⁾ AIS-DV, EFE-TVS, ⁽⁴⁾ DCLV

5.7L (350") V8 Carb.

PCV, ACL, EVAP, OC, FR, BP/EGR, SPK, AIS, EFE
EVAP-VC, ACL-BMS, ACL-VM, ⁽⁴⁾ BP/EGR-BS, BP/EGR-TVS, ⁽⁹⁾ SPK-DV, ⁽⁴⁾ AIS-DV, EFE-TVS, ⁽⁴⁾ DCLV

Heavy Duty Emissions (8501 GVWR Or More) ⁽³⁾

4.8L (292") 6-Cyl. Carb.

PCV, ACL, ⁽⁷⁾ EVAP, SPK, AIS
EVAP-VC, ACL-BMS, ACL-VM, SPK-DV, SPK-TVS, AIS-DV

...

5.7L (350") V8 Carb.

PCV, ACL, ⁽⁷⁾ EVAP, SPK, AIS, EFE
EVAP-VC, ACL-BMS, ACL-VM, SPK-TVS, AIS-DV, EFE-TVS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁷⁾ ⁽⁵⁾ EVAP, AIS

...

7.4L (454") V8 Carb.

PCV, ACL, ⁽⁷⁾ EVAP, SPK, AIS, EFE
EVAP-VC, ACL-BMS, ACL-VM, SPK-TVS, AIS-DV, EFE-TVS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	Some models.

⁽⁵⁾	Vapor canister type.

⁽⁶⁾	Calif. S10/15 only.

⁽⁷⁾	California only.

⁽⁸⁾

A/T only.

⁽⁹⁾	High altitude only.

1982 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

454" V8 Carb.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ EGR, ⁽³⁾ SPK, AIS, EFE
EVAP-VC, SPK-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

⁽⁴⁾	Some models.

1982 Imported Cars & Trucks

Model, Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

LUV 2-Bbl.

PCV, ACL, ⁽³⁾ EVAP, OC, FR, EGR, AIS, EFE

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - IMPORTED in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Vapor canister type.

1983 Buick (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.8L (112") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, SPK-CC

2 or 3

2.0L (122") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, PAIR, O2S, CEC
EVAP-VC, EVAP-CPCV, EGR-CS, SPK-CC, PAIR-ASOV, PAIR-PAV

2.5L (151") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, EGR, SPK, O2S, CEC
EVAP-VC, SPK-CC

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCV, EGR-CS, SPK-CC, AP-AMV

1 or 4

3.0L (181") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, EGR, SPK, AIS, O2S, CEC, ⁽⁴⁾ EFE
EVAP-VC, EVAP-CPCV, SPK-CC

3.8L (231") V6 Turbo

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCV, EGR-CS, EGR-VRV, SPK-CC

1 or 4

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AIS, O2S, CEC, ⁽⁵⁾ EFE
EVAP-VC, EVAP-CPCV, EGR-CS, ⁽⁵⁾ EGR-VRV, SPK-CC

1 or 4

4.1L (252") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, BP/EGR-VSV, SPK-CC, EFE-VSV

2 or 3

5.0L (307") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EGR-CS, SPK-CC, EFE-TVS

1 or 4

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

⁽⁴⁾

Century.

⁽⁵⁾	Some models.

1983 Cadillac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

2.0L (122") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, PAIR, O2S, CEC
EVAP-VC, EVAP-CPCS, EVAP-FBVV, EGR-CS, SPK-EST, PAIR-ASOV

4.1L (250") V8 MFI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EGR-CS, SPK-EST, ⁽⁴⁾ SPK-ESC, AP-AMV

6.0L (368") V8 MFI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCS, EGR-CS, SPK-EST, AP-AMV, EFE-TVS

6.0L (368") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, AP, O2S, CEC, EFE
EVAP-VC, EGR-TVS, SPK-EST, EFE-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS under DOMESTIC CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

⁽⁴⁾	Some models.

1983 Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

5.7L (350") V8 MFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST, AIS-AMV

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS under DOMESTIC CARS in EGR FUNCTION TESTING section. Use specified test number.

1983 Chevrolet - Except Corvette (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCV, ⁽³⁾ SPK-TCS, AIS-AMV, DCLV

2 or 3

2.0L (122") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, PAIR, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST, PAIR-ASOV, PAIR-PAV, ⁽³⁾ DCLV

2 or 3

2.5L (151") 4-Cyl. TBI

PCV, EVAP, TWC, FR, ⁽⁴⁾ EGR, SPK, O2S, CEC
EVAP-VC, SPK-EST

2 or 3

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST, AIS-AMV, DCLV

2 or 3

3.8L (229") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST, AIS-AMV, EFE-TVS

2 or 3

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, ⁽³⁾ EFE
EVAP-VC, EVAP-CPCV, BP/EGR-CS, ⁽³⁾ BP/EGR-VRV, SPK-EST, DCLV

2 or 3

4.4L (267") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EVAP-CPTVS, BP/EGR-BPV, BP/EGR-SOL, SPK-EST, AIS-AMV, EFE-TVS

2 or 3

5.0L (305") V8 FI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST, AIS-AMV

2 or 3

5.0L (305") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, BP/EGR-CS, AIS-AMV, SPK-EST, EFE-TVV

2 or 3

5.7L (350") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-EST, AIS-AMV, EFE-TVS

2 or 3

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Some applications.

⁽⁴⁾	Electronically controlled.

1983 Oldsmobile (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.8L (112") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, O2S, CEC
EVAP-VC, SPK-EST

2 or 3

2.0L (122") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, PAIR, O2S, CEC
EVAP-VC, EVAP-CPCV, EGR-CS, SPK-EST, PAIR-ASOV, PAIR-ACV

2.5L (151") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, EGR, SPK, O2S, CEC
EVAP-VC, SPK-EST

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCV, EGR-CS, SPK-EST, AP-AMV

3.0L (181") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, ⁽⁴⁾ EFE
EVAP-VC, EVAP-CPCV, SPK-EST

2 or 3

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AIS, O2S, CEC, ⁽⁵⁾ EFE
EVAP-VC, EVAP-CPCV, EGR-CS, SPK-EST

4.1L (252") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, BP/EGR-VSV, SPK-EST

2 or 3

5.0L (307") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, ⁽³⁾ EGR, SPK, AIS, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, EGR-CS, EFE-TVS, SPK-EST

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Electronically controlled.

⁽⁴⁾	Ciera only.

⁽⁵⁾	Some models.

1983 Pontiac (Domestic Cars)

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

1.6L (98") 4-Cyl. 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCV, ⁽³⁾ SPK-TCS, AP-AMV

2 or 3

1.8L (112") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, ⁽⁴⁾ AIS, O2S, CEC
EVAP-VC, SPK-CC

2 or 3

2.0L (122") 4-Cyl. TBI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, PAIR, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-CC, PAIR-ASOV, PAIR-PAV

2 or 3

2.5L (151") 4-Cyl. TBI

PCV, ACL, TWC, FR, EGR, SPK, AIS, O2S, CEC
EVAP-VC, SPK-CC

2.8L (173") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-CC, AP-AMV

2 , 3 or 4

3.8L (231") V6 2-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AIS, O2S, CEC, ⁽³⁾ EFE
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-CC

2 , 3 or 4

5.0L (305") V8 EFI

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-CC, AP-AMV

2 or 3

5.0L (305") V8 4-Bbl.

PCV, ACL, EVAP, TWC, FR, BP/EGR, SPK, AP, O2S, CEC, EFE
EVAP-VC, EVAP-CPCV, BP/EGR-CS, SPK-CC, AP-AMV, EFE-TVS

2 , 3 or 4

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS under DOMESTIC CARS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	Some applications.

⁽⁴⁾	Except Federal.

1983 Domestic Trucks & Vans

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

Light Duty Emissions (8500 GVWR Or Less)

1.9L (116") 4-Cyl. Carb.

PCV, ACL, EVAP, TWC, FR, BP/EGR, ⁽⁴⁾ SPK, AIS, ⁽⁴⁾ CEC
EVAP-VC, ACL-BMS, BP/EGR-BPT, BP/EGR-TVS, AIS-DV, HIC

2.0L (122") 4-Cyl. Carb.

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS
EVAP-VC, EVAP-CPTVS, EGR-BS, EGR-DV, EGR-TVS, SPK-TVS

2.8L (173") V6 Carb.

PCV, ACL, EVAP, ⁽⁴⁾ TWC+OC, FR, BP/EGR, SPK, AIS, ⁽⁵⁾ O2S, ⁽⁴⁾ CEC
ACL-BMS, EVAP-VC, EVAP-CPTVS, ⁽⁶⁾ BP/EGR-TCTVS, BP/EGR-TVS, ⁽⁷⁾ SPK-DV, ⁽⁸⁾ SPK-DVRV, ⁽⁸⁾ SPK-TVS, DCLV

4.1L (250") 6-Cyl. Carb.

PCV, ACL, EVAP, TWC, FR, ⁽⁷⁾ BP/EGR, SPK, ⁽⁷⁾ PAIR, CEC, EFE
ACL-BMS, ACL-VM, EVAP-VC, EVAP-TVS, ⁽⁸⁾ BP/EGR-BS, BP/EGR-TVS, SPK-RDVLV, ⁽⁷⁾ PAIR-DV, EFE-TVS, DCLV

5.0L (305") V8 Carb.

PCV, ACL, EVAP, TWC, FR, ⁽⁷⁾ BP/EGR, SPK, AIS, ⁽⁵⁾ CEC, EFE
ACL-BMS, EVAP-VC, ⁽⁷⁾ BP/EGR-BS, BP/EGR-TVS, SPK-DV, AIS-DV, EFE-TVS, DCLV

5.7L (350") V8 Carb.

PCV, ACL, EVAP, OC, FR, EGR, SPK, AIS, ⁽⁴⁾ CEC, EFE
ACL-BMS, ACL-VM, EVAP-VC, ⁽⁷⁾ EGR-BS, EGR-TVS, SPK-DV, AIS-DV, EFE-TVS, DCLV

Heavy Duty Emissions (8501 GVWR Or More) ⁽³⁾

4.8L (292") 6-Cyl. Carb.

PCV, ACL, SPK, AIS
ACL-BMS, ACL-VM, SPK-TVS, AIS-DV, DCLV

...

5.7L (350") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, SPK, AIS, EFE
EVAP-VC, ACL-BMS, ACL-VM, AIS-DV, EFE-TVS, SPK-TVS

...

6.0L (366") & 7.0L (427") V8 Carb.

PCV, ⁽⁴⁾ ⁽⁹⁾ EVAP, AIS

...

7.4L (454") V8 Carb.

PCV, ACL, ⁽⁴⁾ EVAP, SPK, AIS, EFE
EVAP-VC, ACL-BMS, ACL-VM, SPK-TVS, AIS-DV, EFE-TVS

...

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	For emission applications on gasoline-powered motor homes 8501 GVWR or more & built on a motor home chassis, see appropriate CLASS "A" MOTOR HOMES table.

⁽⁴⁾	California only.

⁽⁵⁾	Some models.

⁽⁶⁾

A/T only.

⁽⁷⁾	Some models are electronically controlled.

⁽⁸⁾	High altitude only.

⁽⁹⁾	Vapor canister type.

1983 Class "A" Motor Homes

Engine & Fuel System

⁽¹⁾ Emission Control Systems & Devices

⁽²⁾ EGR Test No.

454" V8 Carb.

PCV, ACL, ⁽³⁾ EVAP, ⁽⁴⁾ EGR, ⁽³⁾ SPK, AIS, EFE
EVAP-VC, SPK-TVS

⁽¹⁾	Major emission control systems and devices are listed in bold type. Components and other related devices are listed in light type.

⁽²⁾	See GENERAL MOTORS - TRUCKS in EGR FUNCTION TESTING section. Use specified test number.

⁽³⁾	California emissions only.

⁽⁴⁾	Some models.

RENDER: 1.0x

NO RELATED

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• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.