Diagnostic Code Index
WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B0770 | All Wheel Drive (AWD) Indicator Circuit Malfunction |
| DTC B0775 | Four Wheel Drive High Range (4HI) Indicator Circuit Malfunction |
| DTC B0780 | Four Wheel Drive Low Range (4LO) Indicator Circuit Malfunction |
| DTC B0785 | Two Wheel Drive High Range (2HI) Indicator Circuit Malfunction |
| DTC B0790 | Transfer Case Neutral Indicator Circuit Malfunction |
| DTC B2725 | ATC Mode Switch Circuit Malfunction |
| DTC C0300 | Rear Speed Sensor Malfunction |
| DTC C0305 | Front Speed Sensor Malfunction |
| DTC C0306 | 05: Motor A or B Circuit Short to Battery or Open |
| DTC C0321 | 01: Transfer Case Lock Short to Battery |
| DTC C0326 | 08: Transfer Case Lock System Performance Signal Invalid |
| DTC C0327 | 07: Encoder Circuit Voltage Above Threshold |
| DTC C0359 | 01: Four Wheel Drive Low Range (4LO) Discrete Output Circuit Short to Battery |
| DTC C0374 | 58: General System Malfunction Incorrect Reaction After Event |
| DTC C0378 | 08: Front Axle Switch Circuit Signal Invalid |
| DTC C0379 | 01: Four Wheel Drive Low Range (4LO) Discrete Output Circuit Short to Battery |
| DTC C0550 | ECU Malfunction |
| DTC C0558 | Calibration Data Not Performed |