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.
| ECM Circuits | Short to Ground | Open | Short to Voltage |
|---|---|---|---|
| PWR/TRN Relay Control | P25101 | 2 | 2 |
| ECM IGN 1 Voltage | 2 | 2 | P25101 |
| PWR/TRN Battery Voltage - Switch | 2 | 2 | - |
| PWR/TRN Battery Voltage - Coil | 2 | 2 | - |
| 1
DTC will set only after the ECM powers down 2 These circuit faults will cause a loss of communication with the scan tool and a no crank, no start condition. |
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