Diagnostic Fault Information
WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Automatic Day-Night Mirrors Inoperative (with RPO DL3/DR4)
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Backup Lamp Supply Voltage | 1 | 1 | 2 | - |
| Automatic Day/Night Mirror Signal | 2 | 2 | 1 | - |
| Low Reference | - | 2 | 2 | - |
| 1. Rearview mirror remains dimmed in reverse 2. Rearview mirror does not dim |
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