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:

    Activating a Setting
    1. Turn the Menu knob to highlight the setting. 2. Press SELECT to activate the setting. ...

    Blizzard Conditions
    Being stuck in snow can be a serious situation. Stay with the vehicle unless there is help nearby. If possible, use the Roadside Assistance Program . To get help and keep everyone in the vehicle saf ...

    Selective Ride Control
    The vehicle may have a ride control system called Selective Ride Control. The system provides the following performance benefits: • Reduced Impact Harshness • Improved Road Isolation • ...