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:

    ELECTRONIC KEY NOT DETECTED
    If the vehicle has the keyless access system, this message displays if the vehicle does not detect the presence of a transmitter when you have attempted to start the vehicle or a vehicle d ...

    Programming with a Recognized Transmitter (Keyless Access Vehicles Only)
    A new transmitter can be programmed to the vehicle when there is one recognized transmitter. To program, the vehicle must be off and all of the transmitters, both currently recognized and new, mu ...

    Uniform Tire Quality Grading
    Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example: ...