Diagnostic Fault Information
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 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 |
|---|---|---|---|---|
| HDLP LO/HID Relay B+ | 2 | 2 | 2 | - |
| HI Beam Relay B+ | 3 | 3 | 3 | - |
| Flash to Pass Switch Signal | 4 | 4 | 4 | - |
| Headlamp Switch Headlamps ON Signal | B257A 00 | 1 | 1 | - |
| Headlamp Switch Headlamps OFF Signal | B257A 00 | 1 | 1 | - |
| Headlamp Switch High Beam Signal | 4 | 4 | 4 | - |
| Headlamp High Beam Relay Control | 3 | 3 | B2580 00 | - |
| Headlamp Low Beam Relay Control | 2 | 2 | B2575 00 | - |
| Headlamp and Panel Dimmer Switch Ground | - | 1 | - | - |
| LF Headlamp Ground | - | 2 | - | - |
| RF Headlamp Ground | - | 2 | - | - |
| Turn Signal/Multifunction Switch Ground | - | 1 | - | - |
| 1. Headlamp Switch Malfunction 2. Headlamps Malfunction - Low Beam 3. Headlamps Malfunction - High Beam 4. Headlamp Dimmer Switch Malfunction |
||||