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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 304 (WIRING SYSTEMS AND POWER MANAGEMENT - INTRODUCTION)SCHEMATIC AND ROUTING DIAGRAMSHARNESS ROUTING VIEWS
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Harness Routing Views

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Harness Routing Views
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: View Of Front Fascia Harnesses (X88)
GM1695174Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuse Block - Underhood
2 X103
3 X100
4 Grille
5 X106
6 X105 (T96)
7 G101
8 J101
9 G100
10 J100
11 X102 (T96)
Fig 2: View Of Front Fascia Harnesses (Z75)
GM1695169Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuse Block - Underhood
2 X100
3 Grille
4 X104 (T96)
5 X106
6 J103
7 G101
8 J101
9 -
10 G100
11 X101 (T96)
12 J102
13 X103
Fig 3: View Of Front Fascia Harnesses (Z88)
GM1695158Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuse Block - Underhood
2 X101
3 X107 (VYU)
4 Grille
5 X108 (VYU)
6 X104
7 X105 (T96)
8 G101
9 J101
10 G100
11 J100
12 X102 (T96)
13 X103
Fig 4: View Of Forward Lamp Harness (HP2)
GM1985397Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X106
2 G101
3 J101
4 X104
5 X120
6 X100
7 X101
8 J161
9 J160
10 G100
11 J162
Fig 5: View Of Front Axle (NP8)
GM1695149Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Frame
2 X110
3 Front Axle Housing
4 Front Axle Actuator
Fig 6: View Of Front Engine Harness
GM1694888Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G103
2 X111
3 J105
4 X109
5 Fuse Block - Underhood X2
6 J104
7 Transmission Control Module (TCM) Connector
8 Engine Control Module (ECM) X1
9 X110 (NQH)
10 Engine Control Module (ECM) X2
11 G102
12 X112
Fig 7: View Of Rear Engine Harness
GM1694890Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Fuse Block - Underhood X2
2 X113
3 J106
4 Mass Air Flow (MAF) Sensor Connector
5 X300
6 X175
Fig 8: View Of Engine Harness - Left Rear (HP2)
GM1985313Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X112
2 G102
3 G103
4 X120
5 X109
6 X111
7 X110
Fig 9: View Of Engine Harness - Right Rear (HP2)
GM1985302Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X300
2 X113
3 X176
4 X175
Fig 10: View Of Ignition Coil Harnesses
GM1694891Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Upper Intake
2 J107
3 J108
4 X111
5 J109
6 J111
7 J110
8 X113
9 J112
Fig 11: Identifying Brake Clutch Harness (JF4)
GM1695155Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X205
2 Dash Panel
3 Junction Block - Left I/P X7
Fig 12: Identifying Brake Clutch Harness (w/o JF4)
GM1695153Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X205
2 Dash Panel
Fig 13: Identifying I/P Harness - Engine Compartment (YE9)
GM1694971Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G110
2 Fuse Block - Underhood X5
3 Fuse Block - Underhood X4
4 Fuse Block - Underhood Stud 2 Terminal
5 X103
6 X109
7 X115
8 J113
9 Dash Panel
Fig 14: Identifying I/P Harness - Passenger Compartment (YE9)
GM1694973Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 J201
2 J207
3 J200
4 G201
5 JX200
6 X205
7 Junction Block - Left I/P X1
8 X212
9 X212
10 Junction Block - Left I/P X2
11 J203
12 J206
13 X208 (U84)
14 Junction Block - Right I/P
15 X207
16 Floor Panel
17 X202
18 X200
19 Data Link Connector (DLC)
20 Fuse Block - I/P X1
21 X201
Fig 15: Identifying I/P Harness - Engine Compartment (Z75 & Y91)
GM1694972Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G110
2 Fuse Block - Underhood X5
3 Fuse Block - Underhood X4
4 X103
5 X109
6 X115
7 X117 (BRS)
8 Dash Panel
Fig 16: Identifying I/P Harness - Passenger Compartment (Z75 & Y91)
GM1694969Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 JX200
2 G201
3 J201
4 J200
5 X203
6 X204 (U42)
7 X205
8 X201
9 Junction Block - Left I/P X1
10 Junction Block - Left I/P X2
11 J202 (UQ5 with DNU)
12 J203
13 J204
14 J205
15 X206 (DNU)
16 X213 (UE1)
17 X208 (U84)
18 Junction Block - Right I/P
19 X207
20 X209 (UVC)
21 X206 (U42 without DNU)
22 X210 (UQS)
23 X211 (D07)
24 Floor Panel
25 X202
26 X200
27 Junction Block - Left I/P X3
28 Fuse Block - I/P
Fig 17: Locating I/P Harness - Engine Compartment (HP2)
GM1985293Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X129
2 X115
3 X109
4 X103
5 X150
Fig 18: Identifying I/P Harness - Left Side (HP2)
GM1985285Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 JX200
2 G201
3 X201
4 X205
5 X202
6 X200
Fig 19: Identifying I/P Harness - Right Side (HP2)
GM1985287Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X212
2 X215
3 X207
Fig 20: I/P Extension Harness (HP2, except Y91)
GM1985283Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 JX201
2 X203
3 X212
4 X209 (UVC)
5 X211 (D07)
Fig 21: View Of Interior HVAC Module
GM1694908Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Air Temperature Actuator - Right
2 Recirculation Actuator
3 Junction Block - Right I/P X4
4 G200
5 Blower Motor
6 Air Temperature Sensor - Lower Right (CJ2)
7 Air Temperature Actuator - Left
8 Blower Motor Control Module
9 Air Temperature Sensor - Lower Left (CJ2)
10 Mode Actuator
Fig 22: Identifying Console Harness (Z75)
GM1695144Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X211 (D07)
2 Console Trim
3 J330 (D07)
4 X309 (AN3)
5 X210 (UQS)
Fig 23: Identifying Console Harness (Y91 & YE9)
GM1695146Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Floor Panel
2 Console
3 X309 (UQS)
4 J330
5 X211 (D07)
Fig 24: View Of Driver Seat Harness (AN3 & KB6)
GM1694896Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 J305 (AN3)
2 Seat Lumbar Motor - Driver
3 Seat Frame
4 J312 (AN3)
5 J311 (AN3)
6 J305 (AG1 without AN3)
7 J310 (AN3)
8 J309 (AN3)
9 J307 (KB6)
10 J308 (KB6)
11 J306 (AN3)
12 X303
Fig 25: View Of Passenger Seat Harness (AN3 & KB6)
GM1694894Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Seat Frame
2 Seat Lumbar Motor - Passenger Connector
3 Seat Lumbar Motor - Passenger Connector
4 J318 (KB6)
5 J317 (KB6)
6 X305
7 J313
8 J314 (AN3)
9 J315 (AN3)
10 J316 (AN3 without KB6)
Fig 26: View Of Headliner Harness (Except E52)
GM1695041Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X306 (U42 without DNU)
2 J326
3 J327
4 J328
5 Junction Block - Left I/P X8
6 Junction Block - Left I/P X9
7 Junction Block - Left I/P X10
8 X203
9 X204 (U42)
10 X304
Fig 27: View Of Headliner Harness (Short Wheel Base w/Y91)
GM1695038Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X306 (U42)
2 X403 (E52)
3 Headliner
4 J325 (CJ2)
5 J326
6 J327
7 J328
8 Junction Block - Left I/P X8
9 X203
10 X204 (U42)
11 X304
Fig 28: View Of Headliner Harness (Short Wheel Base w/YE9)
GM1695033Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X304
2 X403 (E52)
3 Headliner
4 J325 (CJ2)
5 J326
6 J327
7 J328
8 Junction Block - Left I/P X10
9 Junction Block - Left I/P X8
10 Junction Block - Left I/P X9
11 X203
Fig 29: View Of Headliner and Antenna Harnesses (Long Wheel Base)
GM1695024Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X406 (E52)
2 Headliner
3 J329 (DNU)
4 J325 (CJ2)
5 J326
6 J327
7 J328
8 X203
9 X204 (U42)
10 Junction Block - Left I/P X8
11 Junction Block - Left I/P X9
12 Junction Block - Left I/P X10
13 X213 (UE1)
14 X208 (U84)
15 X304
16 X306
17 X403 (E52)
Fig 30: Identifying Driver Door Harness
GM1694868Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Door Frame
2 Fuse Block - I/P Connector
3 X500 (ASF)
Fig 31: Identifying Passenger Door Harness
GM1694870Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Junction Block - Right I/P X3
2 Door Frame
3 X600 (ASF)
Fig 32: Identifying LR Door Harness
GM1694874Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Door Frame
2 X700
Fig 33: Identifying RR Door Harness
GM1694876Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X800
2 Door Frame
Fig 34: Identifying Body Harness - Passenger Compartment (Except E52)
GM1694963Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G301
2 J304 (AG2)
3 X305
4 X800
5 G304
6 X307 (ARS or KA6)
7 X311
8 X310 (UD7)
9 X308 (ARS or KA6)
10 G303
11 X700
12 JX300
13 X303
14 X275
15 X500 (ASF)
16 X202
17 X200
18 Junction Block - Left I/P X13
19 Junction Block - Left I/P X12
20 Junction Block - Left I/P X11
21 J303
22 X309 (UQS)
23 J302
24 X600 (ASF)
25 X207
26 X209 (UVC)
27 G302
Fig 35: Identifying Body Harness - Front Compartment (Short Wheel Base)
GM1694949Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X207
2 G301
3 G302
4 X305
5 X800
6 G304
7 X307 (ARS or KA6)
8 J302
9 J303
10 X700
11 G303
12 JX300
13 X303
14 Fuse Block - I/P X2
15 Fuse Block - I/P X3
16 X275
17 X500 (ASF)
18 X202
19 X200
20 Dash Panel
21 X309 (UQS)
22 X600 (ASF)
23 X209 (UVC)
Fig 36: Identifying Body Harness - Rear Compartment (Short Wheel Base)
GM1694955Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X403 (E52)
2 X407 (C69)
3 G402 (E52)
4 J400
5 X405 (E52)
6 X404 (E52)
7 X408 (E52 with UD7)
8 Left Rear Wheel Liner
9 X308 (ARS or KA6)
10 X307 (ARS or KA6)
Fig 37: Identifying Body Harness - Front Compartment (Long Wheel Base)
GM1694938Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X600 (ASF)
2 G302
3 X305
4 X800
5 G304
6 X307 (ARS or KA6)
7 X403 (E52)
8 J302
9 J303
10 X308 (ARS or KA6)
11 G303
12 X700
13 JX300
14 X303
15 X275
16 X500 (ASF)
17 X200
18 X202
19 X309 (UQS)
20 G301
21 X207
22 X209 (UVC)
Fig 38: Identifying Body Harness - Rear Compartment (Long Wheel Base)
GM1694944Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X403 (E52)
2 X408 (E52 with UD7)
3 X407 (C69)
4 G402 (E52)
5 X406 (E52)
6 J400 (E52)
7 X405 (E52)
8 X404 (E52)
9 Rear Floor Panel
Fig 39: Identifying Chassis Harness (Except E52)
GM1694898Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Frame
2 J331
3 X310
4 X115
5 X412
6 X409
7 X411
8 G400
9 G401
10 J301 (Z55 or Z95)
11 X300
12 J300
13 G300
Fig 40: Identifying Chassis Harness (Short Wheel Base)
GM1694902Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X115
2 Fuse Block - Underhood X3
3 Fuse Block - Underhood Stud 1 Terminal
4 J300
5 X300
6 J331
7 X412
8 Trailer Connector
9 X411
10 G400
11 G401
12 G305 (EXP)
13 J301 (Z55 or Z95)
14 G300
Fig 41: Identifying Chassis Harness (Long Wheel Base)
GM1694899Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X115
2 Fuse Block - Underhood X3
3 X412
4 Trailer Connector
5 X411
6 G400
7 G401
8 J331
9 J301 (Z55 or Z95)
10 X300
11 J300
12 G300
Fig 42: Identifying Chassis Harness (HP2)
GM1985281Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 G400
2 X411
3 G401
4 G300
5 X129
6 X115
7 X300
8 X412
Fig 43: View Of Rear HVAC Module (Short Wheel Base)
GM1694907Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X407 (C69)
2 G402 (E52)
3 Blower Motor - Auxiliary
4 Mode Actuator - Auxiliary
5 Air Temperature Actuator - Auxiliary
6 Blower Motor Control Module - Auxiliary
7 Air Temperature Sensor - Lower Auxiliary (CJ2)
Fig 44: View Of Rear HVAC Module (Long Wheel Base)
GM1694906Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Mode Actuator - Auxiliary
2 Blower Motor - Auxiliary
3 X407 (C69)
4 G402 (E52)
5 Blower Motor Control Module - Auxiliary
6 Air Temperature Actuator - Auxiliary
7 Air Temperature Sensor - Lower Auxiliary (CJ2)
Fig 45: Identifying Liftgate Harness (E52)
GM1695151Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 X405
2 J900
3 Rear Window Defogger X2
4 X900
5 X901
6 J904
7 J903
8 J902
9 Rear Window Defogger X1
10 J901
RENDER: 1.0x

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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.