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:

    USB Support
    The USB connector is located on the instrument panel or in the center console, and uses the USB 2.0 standard. ...

    What Makes a Denali
    The changes from a regular Acadia to a Denali are obvious from the outside, and they make the Acadia Denali look more put together, as if it were sculpted from one piece of metal rather than glued ...

    Tire Chains
    WARNING Do not use tire chains. There is not enough clearance. Tire chains used on a vehicle without the proper amount of clearance can cause damage to the brakes, suspension or other vehicle part ...