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:

    Object Detection System Messages
    PARK ASSIST OFF This message is displayed when the park assist system has been turned off. See Ultrasonic Parking Assist . SERVICE PARK ASSIST This message is displayed if there is a problem with ...

    Shocks and Struts
    Shocks and struts help aid in control for a smoother ride. • Signs of wear may include steering wheel vibration, bounce/sway while braking, longer stopping distance, or uneven tire wear. â ...

    Interior
    Car shoppers might be confused by automakers using the term "premium" to classify brands like Buick and Lincoln, rather than "luxury," but having two classes is smart. The term ...