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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1418 (HVAC SYSTEM - MANUAL)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Diagnostic Code Index
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Diagnostic Code Index
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.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B0413, B0423, B0433, B3779 or B3782 | B0413 02: Temperature Control 1 Feedback Circuit Short to Ground B0413 05: Temperature Control 1 Feedback Circuit Short to Battery or Open B0413 61: Temperature Control 1 Feedback Circuit Actuator Stuck Open B0423 02: Temperature Control 2 Feedback Circuit Short to Ground B0423 05: Temperature Control 2 Feedback Circuit Short to Battery or Open B0423 61: Temperature Control 2 Circuit Actuator Stuck B0433 02: Temperature Control 3 Feedback Circuit Short to Ground B0433 05: Temperature Control 3 Feedback Circuit Short to Battery or Open B0433 61: Temperature Control 3 Circuit Actuator Stuck B3779 02: Air Flow Control 9 Feedback Circuit Short to Ground B3779 05: Air Flow Control 9 Feedback Circuit Short to Battery or Open B3779 61: Air Flow Control 9 Circuit Actuator Stuck B3782 02: Air Flow Control 10 Feedback Circuit Short to Ground B3782 05: Air Flow Control 10 Feedback Circuit Short to Battery or Open B3782 61: Air Flow Control 10 Circuit Actuator Stuck |
| DTC P0532 or P0533 | P0532: Air Conditioning A/C Refrigerant Pressure Sensor Circuit Low Voltage P0533: Air Conditioning A/C Refrigerant Pressure Sensor Circuit High Voltage |
| DTC P0645 | 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.