Diagnostic Fault Information
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 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 |
|---|---|---|---|---|
| Accessory Voltage | 1** | 1 | 1 | - |
| Ignition 1 Voltage | 1** | 1 | 1 | - |
| Off/Run Crank Voltage | 1** | 1 | 1 | - |
| Ignition Key Resistor Signal | 1 | 1 | 1 | - |
| Accessory Wakeup Serial Data | DTC U1814* | DTC U0100-U0299, P0513 00 | - | - |
| Run/Crank Ignition 1 Voltage | DTC B1428* | 2 | 3 | - |
| Battery Positive Voltage (Ignition Switch) | 1** | 1 | - | - |
| 1. Power Mode Mismatch-Different specific symptoms may occur depending on the vehicle operating conditions when the fault occurred. 2. Vehicle will not start and will set DTC B1370 06 in SIR. 3. The engine will continue to run after ignition key is removed. * This circuit is a pass through circuit in the BCM and will cause Ign Switch fuse to open. ** This circuit/condition will cause Ign Switch fuse to open, and may cause a no start condition. |
||||