Circuit/System Verification
WARNING: This page is about a different car, the 2013 GMC Yukon XL, 2013 GMC Yukon, 2013 Chevrolet Tahoe, 2013 Chevrolet Suburban, and 2013 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON, engine OFF.
- Install a scan tool.
- Ensure no other ECBM or TCCM codes are set.
- If any other EBCM or TCCM DTC's are set, diagnose them first.