Repair Verification
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Ignition OFF for 5 seconds, Ignition ON, observe that the ABS, TCS, and Low Traction indicators function by illuminating for 3 seconds then turns OFF. This is the bulb self test that operates upon every ignition key start cycle.