Diagnostic Code Index
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B0228, B0413, B0423, or B3779 | Mode Door Problem |
| DTC P0532 or P0533 | Air Conditioning (A/C) Refrigerant Pressure Sensor Circuit |
| DTC P0645 | Air Conditioning A/C Clutch Relay Control Circuit |
| DTC P0646 or P0647 | Air Conditioning (A/C) Clutch Relay Control Circuit |