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:

    Adjustable Safety Belt Comfort Guide
    On vehicles with the adjustable comfort guide, one guide is provided. Additional adjustable comfort guides are available through your dealer To install the adjustable safety belt comfort guide to t ...

    Parking on Hills
    CAUTION: You really should not park your vehicle, with a trailer attached, on a hill. If something goes wrong, your rig could start to move. People can be injured, and both your vehicle and t ...

    Exterior Care
    Cleaning Exterior Lamps/ Lenses Use only lukewarm or cold water, a soft cloth, and a car washing soap to clean exterior lamps and lenses. Follow instructions under “Washing the Vehicle” later in ...