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 MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 887 (HVAC SYSTEM - MANUAL)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Diagnostic Code Index
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B0158 | DTC B0158 02 Outside Air Temperature Sensor Circuit Short to Ground DTC B0158 05 Outside Air Temperature Sensor Circuit Short to Battery or Open |
| DTC B0413, B0423, B0433, B3779, or B3782 | DTC B0413 02 Temperature Control 1 Feedback Circuit Short to Ground DTC B0413 05 Temperature Control 1 Feedback Circuit Short to Battery or Open DTC B0413 61 Temperature Control 1 Feedback Circuit Actuator Stuck Open DTC B0423 02 Temperature Control 2 Feedback Circuit Short to Ground DTC B0423 05 Temperature Control 2 Feedback Circuit Short to Battery or Open DTC B0423 61 Temperature Control 2 Circuit Actuator Stuck DTC B0433 02 Temperature Control 3 Feedback Circuit Short to Ground DTC B0433 05 Temperature Control 3 Feedback Circuit Short to Battery or Open DTC B0433 61 Temperature Control 3 Circuit Actuator Stuck DTC B3779 02 Air Flow Control 9 Feedback Circuit Short to Ground DTC B3779 05 Air Flow Control 9 Feedback Circuit Short to Battery or Open DTC B3779 61 Air Flow Control 9 Circuit Actuator Stuck DTC B3782 02 Air Flow Control 10 Feedback Circuit Short to Ground DTC B3782 05 Air Flow Control 10 Feedback Circuit Short to Battery or Open DTC B3782 61 Air Flow Control 10 Circuit Actuator Stuck |
| DTC B1023 | DTC B1023 05 Integral Switch Performance Short to Ground DTC B1023 06 Integral Switch Performance Short to Battery or Open DTC B1023 61 Integral Switch Performance Signal Invalid |
| DTC B3933 | DTC B3933 02 A/C Evaporator Air Temperature Sensor Short to Ground DTC B3933 05 A/C Evaporator Temperature Sensor Circuit Short to Battery or Open |
| DTC P0532 or P0533 | DTC P0532 Air Conditioning A/C Refrigerant Pressure Sensor Circuit Low Voltage DTC P0533 Air Conditioning A/C Refrigerant Pressure Sensor Circuit High Voltage |
| DTC P0645 | DTC P0645 A/C Clutch Relay Control Circuit |
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.