Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, observe the DTC information with a scan tool. DTC UXXXX should not be set.
- If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
Engine idling, observe the EBCM DTC information with a scan tool. EBCM DTCs should not set.
- If a DTC sets, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.
- If there are no EBCM DTCs set, refer to the following:
- Symptoms - Antilock Brake System for the ABS - Hybrid
- Symptoms - Antilock Brake System for the ABS - Non-Hybrid Less than 3900 kg (8600 lb) GVW
- Symptoms - Antilock Brake System for the ABS - Non-Hybrid Greater than/Equal to 3900 kg (8600 lb) GVW
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.