Circuit/System Verification

WARNING: This page is about a different car, the 2011 GMC Sierra, 2011 GMC Cab & Chassis Sierra, 2011 Chevrolet Silverado, and 2011 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Verify that DTC U1862 is not set in the HPCM.
- If the DTC is set, refer to DTC U1862 .
Verify that DTC B137A is not set in the SDG module.
- If the DTC is set, refer to DTC B137A .