OnStar®

If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview.

    See also:

    Starting the Engine
    Place the transmission in the proper gear. If the vehicle has the keyless access system, the keyless access transmitter must be authenticated in order for the ignition control knob to turn. ...

    Recommended Fuel
    If the vehicle has a V6 engine, use regular unleaded gasoline with a posted octane rating of 87 or higher. If the octane rating is less than 87, an audible knocking noise, commonly referred ...

    Driving Characteristics and Towing Tips
    WARNING! The driver can lose control when pulling a trailer if the correct equipment is not used or the vehicle is not driven properly. For example, if the trailer is too heavy, the brakes m ...