Diagnostics

OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehicle is equipped with the Tire Pressure Monitoring System. If a diagnostics check is needed between e-mails, push OnStar Additional Information , and an Advisor can run a check.

    See also:

    Anti-Lock Brake SystemWarning Light
    With the Anti-Lock Brake System (ABS), this light will come on when you start your engine and may stay on for several seconds, that is normal. A chime may also sound when the light comes on ...

    Shuttle Service
    Shuttle service is the preferred means of offering Courtesy Transportation. Dealers may provide shuttle service to get you to your destination with minimal interruption of your daily schedul ...

    Engine Compartment Overview
    2.0 L L4 Engine A. Engine Air Cleaner/Filter . B. Engine Cover. C. Engine Oil Dipstick. See Engine Oil . D. Engine Oil Fill Cap. See Engine Oil . E. Transmission Fluid Cap and Dipstick. See Auto ...