Diagnostic Code Index
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B0770 | DTC B0770 01 AWD Indicator Circuit Short to Battery DTC B0770 06 AWD Indicator Circuit Short to Ground or Open |
| DTC B0775 | DTC B0775 01 4WD HI Indicator Circuit Short to Battery DTC B0775 06 4WD HI Indicator Circuit Short to Ground or Open |
| DTC B0780 | DTC B0780 01 4WD LO Indicator Circuit Short to Battery DTC B0780 06 4WD LO Indicator Circuit Short to Ground or Open |
| DTC B0785 | DTC B0785 01 2WD HI Indicator Circuit Short to Battery DTC B0785 06 2WD HI Indicator Circuit Short to Ground or Open |
| DTC B0790 | DTC B0790 01 Neutral Indicator Circuit Short to Battery DTC B0790 06 Neutral Indicator Circuit Short to Ground or Open |
| DTC B2725 | DTC B2725 08 Active Transfer Case (ATC) Mode Switch Signal Invalid |
| DTC C0306 | DTC C0306 02 Motor A or B Circuit Short to Ground DTC C0306 05 Motor A or B Circuit Short to Battery or Open |
| DTC C0321 | DTC C0321 01 Transfer Case Module Lock Circuit Short to Battery DTC C0321 02 Transfer Case Module Lock Circuit Short to Ground DTC C0321 04 Transfer Case Module Lock Circuit Open DTC C0321 08 Transfer Case Module Lock Circuit Signal Invalid |
| DTC C0374 | DTC C0374 54 General System Performance Temperature High |
| DTC C0379 | DTC C0379 01 Front Axle System Short to Battery DTC C0379 02 Front Axle System Short to Ground DTC C0379 04 Front Axle System Open Circuit DTC C0379 08 Front Axle Switch Circuit Signal Invalid |
| DTC C0387 | DTC C0387 59 Unable to Complete Shift Circuit |
| DTC C0392 | DTC C0392 01 Rotational Position Sensor Circuit Short to Battery DTC C0392 02 Rotational Position Sensor Circuit Short to Ground DTC C0392 08 Rotational Position Sensor Circuit Signal Invalid |
| DTC C0396 | DTC C0396 01 Incremental Sensor Circuit Short to Battery DTC C0396 02 Incremental Sensor Circuit Short to Ground DTC C0396 04 Incremental Sensor Circuit Open DTC C0396 05 Incremental Sensor Circuit Short to Battery or Open |
| DTC C0397 | DTC C0397 64 Transfer Case Clutch Performance Actuator Slipping |
| DTC C0398 | DTC C0398 5A Incremental Sensor - Rotational Position Sensor Correlation Plausibility Failure |
| DTC C0550 | DTC C0550 37 Electronic Control Unit (ECU) Performance Watchdog Failure DTC C0550 39 Electronic Control Unit (ECU) Internal Electronic Failure |
| DTC C0569 | DTC C0569 4B System Configuration Error Calibration Not Learned |
| DTC C0896 | DTC C0896 03 Device Voltage Range Below Threshold DTC C0896 07 Device Voltage Range Above Threshold |
| DTC P2160 or P2161 | DTC P2160 Vehicle Speed Sensor (VSS) 2 Circuit Low Voltage DTC P2161 Vehicle Speed Sensor (VSS) 2 Circuit Intermittent |
| DTC P279A | DTC P279A Four Wheel Drive (4WD) High Range Performance |
| DTC P279B | DTC P279B Four Wheel Drive (4WD) Low Range Performance |
| DTC P279C | DTC P279C Four Wheel Drive (4WD) Neutral Range Performance |