Diagnostic Fault Information
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.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| B+ | 1 | 1 | - | - |
| Ignition | 1 | 1 | 3 | - |
| Close Switch Signal | 1 | 1 | 1* | - |
| Express Switch Signal | 2 | 2 | 2* | - |
| Open Switch Signal | 1 | 1 | 1* | - |
| Vent Close Switch Signal | 1 | 1 | 1* | - |
| Vent Open Switch Signal | 1 | 1 | 1* | - |
| Sunroof Switch Ground | - | 1 | - | - |
| Sunroof Motor Ground | - | 1 | - | - |
| * Internal damage to the sunroof switch may occur if shorted to B+ 1. Power sunroof malfunction 2. Express open and close inoperative 3. Power sunroof operates with ignition off |
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