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 |
|---|---|---|---|---|
| DRL Relay B+ | 2 | 2 | - | - |
| Ambient Light Sensor Signal | B2645 03 | B2645 07 | B2645 07 | - |
| Daytime Running Lamps Control | 2 | 2 | B2600 00 | - |
| Headlamp - Left Front Low Beam Control | 1 | 1 | 1 | - |
| Headlamp - Right Front Low Beam Control | 1 | 1 | 1 | - |
| Ambient Light Sensor Ground | - | B2645 07 | - | - |
| Headlamp - Left Front Ground | - | 1 | - | - |
| Headlamp - Right Front Ground | - | 1 | - | - |
| 1. Headlamps Malfunction 2. Daytime Running Lamps Malfunction |
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