Diagnostic Fault Information
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. 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 | - | - |
| 1. Power sunroof malfunction 2. Express open and close inoperative 3. Power sunroof operates with ignition off |
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