Safety Warning
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 MANUALSCHEVROLET1996CHEVY EXPRESS G3500, VAN CARGO EXTENDED, 7.4 JREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/CODES - G SERIES (GASOLINE)
1996 Chevrolet Chevy Express G3500, Van Cargo Extended, 7.4 J
Engine Controls - Tests W/Codes - G Series (Gasoline)
1996 Chevrolet Chevy Express G3500, Van Cargo Extended, 7.4 JSECTION Engine Controls - Tests W/Codes - G Series (Gasoline)
- Introduction
- Self-Diagnostic System
- Notes
- Hard Failures
- Intermittent Failures
- DTC Status
- Fail This IGN.
- History
- Last Test Fail
- Mil Request
- Not Run SCC
- Test Fail SCC
- Failed Since Clear
- Not Run Since Cl.
- Not Run This IGN.
- Test Ran And Passed
- Diagnostic Procedure
- Reading Trouble Codes
- Trouble Code Definition
- Hard Or Intermittent Trouble Code Determination
- Clearing Diagnostic Trouble Codes (DTC)
- Pcm/VCM Location
- Diagnostic Materials
- Special Tools (Diagnostic)
- Scan Tool Usage
- Scan Data
- Specifications
- Summary
- Diagnostic Trouble Codes
- Notes
- DTC P0101 - MAF Sensor System Performance
- DTC P0102 - MAF Sensor Circuit Low Frequency
- DTC P0103 - MAF Sensor Circuit High Frequency
- DTC P0106 - Map Sensor System Performance
- DTC P0107 - Map Sensor Circuit Low Voltage
- DTC P0108 - Map Sensor Circuit High Voltage
- DTC P0112 - IAT Sensor Circuit Low Voltage
- DTC P0113 - IAT Sensor Circuit High Voltage
- DTC P0117 - ECT Sensor Circuit Low Voltage
- DTC P0118 - ECT Sensor Circuit High Voltage
- DTC P0121 - TP Sensor System Performance
- DTC P0122 - TP Sensor Circuit Low Voltage
- DTC P0123 - TP Sensor Circuit High Voltage
- DTC P0125 - ECT Excessive Time To Closed Loop
- DTC P0131 - Ho2S Circuit Low Voltage Bank 1, Sensor 1
- DTC P0132 - Ho2S Circuit High Voltage Bank 1, Sensor 1
- DTC P0133 - Ho2S Slow Response Bank 1, Sensor 1
- DTC P0134 - Ho2S Circuit Insufficient Activity Bank 1, Sensor 1
- DTC P0135 - Ho2S Heater Circuit Bank 1, Sensor 1
- DTC P0137 - Ho2S Circuit Low Voltage Bank 1, Sensor 2
- DTC P0138 - Ho2S Circuit High Voltage Bank 1, Sensor 2
- DTC P0140 - Ho2S Insufficient Activity Bank 1, Sensor 2
- DTC P0141 - Ho2S Heater Circuit Bank 1, Sensor 2
- DTC P0143 - Ho2S Circuit Low Voltage Bank 1, Sensor 3
- DTC P0144 - Ho2S Circuit High Voltage Bank 1, Sensor 3
- DTC P0146 - Ho2S Insufficient Activity Bank 1, Sensor 3
- DTC P0147 - Ho2S Heater Circuit Bank 1, Sensor 3
- DTC P0151 - Ho2S Circuit Low Voltage Bank 2, Sensor 1
- DTC P0152 - Ho2S Circuit High Voltage Bank 2, Sensor 1
- DTC P0153 - Ho2S Slow Response Bank 2, Sensor 1
- DTC P0154 - Ho2S Insufficient Activity Bank 2, Sensor 1
- DTC P0155 - Ho2S Heater Circuit Bank 2, Sensor 1
- DTC P0157 - Ho2S Circuit Low Voltage Bank 2, Sensor 2
- DTC P0158 - Ho2S Circuit High Voltage Bank 2, Sensor 2
- DTC P0160 - Ho2S Insufficient Activity Bank 2, Sensor 2
- DTC P0161 - Ho2S Heater Circuit Bank 2, Sensor 2
- DTC P0171 - Fuel Trim System Lean Bank 1
- DTC P0172 - Fuel Trim System Rich Bank 1
- DTC P0174 - Fuel Trim System Lean Bank 2
- DTC P0175 - Fuel Trim System Rich Bank 2
- DTC P0300 - Misfire Detected
- DTC P0301 - Cylinder No. 1 Misfire Detected
- DTC P0302 - Cylinder No. 2 Misfire Detected
- DTC P0303 - Cylinder No. 3 Misfire Detected
- DTC P0304 - Cylinder No. 4 Misfire Detected
- DTC P0305 - Cylinder No. 5 Misfire Detected
- DTC P0306 - Cylinder No. 6 Misfire Detected
- DTC P0307 - Cylinder No. 7 Misfire Detected
- DTC P0308 - Cylinder No. 8 Misfire Detected
- DTC P0325 - Knock Sensor Module Circuit
- DTC P0327 - Knock Sensor Circuit Low Voltage
- DTC P0336 - Crankshaft Position Sensor Circuit Performance
- DTC P0337 - Crankshaft Position Sensor Circuit Low Frequency
- DTC P0338 - Crankshaft Position Sensor Circuit High Frequency
- DTC P0339 - Crankshaft Position Sensor Circuit Intermittent
- DTC P0340 - Camshaft Position Sensor Circuit
- DTC P0341 - Camshaft Position Sensor Circuit Performance
- DTC P0401 - EGR System Performance
- DTC P0410 - Secondary Air Injection System
- DTC P0420 - TWC System Low Efficiency Bank 1
- DTC P0430 - TWC System Low Efficiency Bank 2
- DTC P0441 - EVAP System No Flow During Purge
- DTC P0500 - Vehicle Speed Sensor Circuit
- DTC P0506 - Idle System Low Idle Air Control Responding
- DTC P0507 - Idle System High Idle Air Control Responding
- DTC P1106 - Map Sensor Circuit Intermittent High Voltage
- DTC P1107 - Map Sensor Circuit Intermittent Low Voltage
- DTC P1111 - IAT Sensor Circuit Intermittent High Voltage
- DTC P1112 - IAT Sensor Circuit Intermittent Low Voltage
- DTC P1114 - ECT Sensor Circuit Intermittent Low Voltage
- DTC P1115 - ECT Sensor Circuit Intermittent High Voltage
- DTC P1121 - TP Sensor Circuit Intermittent High Voltage
- DTC P1122 - TP Sensor Circuit Intermittent Low Voltage
- DTC P1133 - Ho2S Insufficient Switching Bank 1, Sensor 1
- DTC P1134 - Ho2S Transition Time Ratio Bank 1, Sensor 1
- DTC P1153 - Ho2S Insufficient Switching Bank 2, Sensor 1
- DTC P1154 - Ho2S Transition Time Ratio Bank 2, Sensor 1
- DTC P1345 - Crankshaft/Camshaft Position Sensor Correlation
- DTC P1351 - Ignition Control (Ic) Circuit High Voltage
- DTC P1361 - Ignition Control (Ic) Circuit Low Voltage
- DTC P1380 - Electronic Brake Control Module (EBCM) DTC Detected Rough Road Data Unusable
- DTC P1381 - Electronic Brake Control Module (EBCM) VCM Serial Data
- DTC P1406 - EGR Valve Pintle Position Circuit
- DTC P1415 - Air System Bank 1
- DTC P1416 - Air System Bank 2
- DTC P1441 - EVAP Emission System Flow During Non-Purge
- DTC P1442 - EVAP Emission Vacuum Switch High Voltage During Ignition On
- DTC P1508 - Idle Air Control System Low Rpm
- DTC P1509 - Idle Air Control System High Rpm
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • 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.