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:

    Roadside Assistance and OnStar
    If you have an active OnStar subscription, press the Q button and the current GPS location will be sent to an OnStar Advisor who will assess your problem, contact Roadside Assistance, and relay y ...

    Horn
    Press near or on the horn symbols on the steering wheel pad to sound the horn. ...

    Audio System(s)
    Determine which radio your vehicle has and then read the pages following to familiarize yourself with its features. Driving without distraction is a necessity for a safer driving experience. By ...