Circuit/System Verification
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.
With a scan tool, verify that DTC U182A is not set in the SDGM, and U189A is not set in the HPCM.
- If either DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle .