Circuit/System 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.
With scan tool installed drive the vehicle in a straight line at a speed greater than 40 km/h (25 mph), all wheel speed sensors should read the same km/h (mph). Verify in scan tool EBCM scan tool data.