Diagnostic Aids
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.
- A high or low voltage DTC in multiple modules indicates a concern in the charging system. Refer to Charging System Test .
- Inspect the ground connections G103 and G201, and insure that they are clean and tight.
- This DTC may be set by overcharging with a battery charger, or by jump starting.