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 MANUALSCHEVROLET1997CHEVY EXPRESS G3500, VAN CARGO, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 33 (ENGINE CONTROLS - TESTS W/CODES - 3.8L)
1997 Chevrolet Chevy Express G3500, Van Cargo, 6.5 F
Section 33 (Engine Controls - Tests W/Codes - 3.8L)
1997 Chevrolet Chevy Express G3500, Van Cargo, 6.5 FSECTION Section 33 (Engine Controls - Tests W/Codes - 3.8L)
WARNING: This page is about a different car, the 1995 Pontiac Trans Sport, 1995 Oldsmobile Silhouette, and 1995 Chevrolet Lumina APV. However, it is still accessible from the selected car via links, so may be relevant.
- Model Identification
- Introduction
- Self-Diagnostic System
- Trouble Code Charts
- Notes
- Code P0101, Mass Air Flow (MAF)
- Code P0112, IAT Sensor Circuit Low Input
- Code P0113, IAT Sensor Circuit High Input
- Code P0117, Coolant Temperature Sensor Temperature Low
- Code P0118, Coolant Temperature Sensor Temperature High
- Code P0122, Throttle Position Sensor Signal Low
- Code P0123, TP Sensor Signal High
- Code P0131, Heated Oxygen Sensor Low Signal Voltage (Lean)
- Code P0132, Heated O2 Sensor High Signal Voltage (Rich)
- Code P0134, Heated Oxygen Sensor Open Circuit
- Code P0171, Fuel Trim Lean
- Code P0172, Fuel Trim Rich
- Code P0321, Spark Reference Circuit
- Code P0325, Knock Sensor Error
- Code P0341, Cam/Crank Error
- Code P0342, Cam Signal Circuit
- Code P0401, EGR Flow Test Failure
- Codes P0501/P0502, VSS Circuit
- Code P0703, TCC Brake Input Circuit
- Code P0705 - Gear Range Switch Circuit
- Code P0712, Transaxle Temperature Sensor Signal Voltage Low
- Code P0713, Transaxle Temperature Sensor Signal Voltage High
- Code P0740, TCC Circuit
- Code P0755 - Shift Solenoid "B" Problem
- Codes P1350/P1361, Ic Circuit
- Code P1406, EGR Valve Pintle Position (1 Of 2)
- Code P1406, EGR Valve Pintle Position (2 Of 2)
- Code P1530, A/C Head Pressure Switch
- Code P1558, Cruise System Problem SPS Indicated Low
- Code P1561, Cruise Vent Solenoid
- Code P1562, Cruise Vacuum Solenoid
- Code P1565, Cruise Servo Position
- Code P1567, Cruise Switches Circuit
- Code P1568, Cruise System Problem (SPS Indicated High)
- Code P1571, Traction Control Desired Torque Out Of Range
- Code 1573, Traction Control Loss Of Abs/TCS Serial Data
- Code P1599, Cruise Power Management
- Code 1623, Prom Error
- Code P1630, System Voltage High/Low
- Code P1640, QDM No. 1 Circuit
- Code P1650, QDM No. 2
- Code P1670, QDM No. 4
- Summary
- Wiring Diagrams
RENDER: 1.0x
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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.