Yukon/Denali 4WD V8-4.8L VIN V (2005)
illuminated, refer to Symptoms - Antilock Brake System.
4. Select a smooth, dry, clean, and level road or large lot that is as free of traffic and obstacles as possible.
5. Drive the vehicle and maintain a speed of at least 16 km/h (10 mph) for at least 5 seconds.
6. Stop the vehicle and check to see if the ABS indicator or the traction assist indicator is illuminated.
7. If an indicator is illuminated, refer to Diagnostic Starting Point - Antilock Brake System.
