Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Monitor the ABS DTCs on the scan tool.

If any ABS DTCs are set, diagnose those first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle
If there are no ABS 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