Circuit/System Verification

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.

Ignition ON, verify that DTC P0562, P0563 in the ECM and/or B1325 are not set as current.
- If one of the specified DTCs is found as current, repair those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Verify that DTC C0899 or C0900 are not current in the scan tool.
- If the any of the specified DTCs are current, repair those DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .