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:

    Electric Parking Brake Light
    For vehicles with the Electric Parking Brake (EPB), the parking brake status light comes on when the parking brake is applied. If the light continues flashing after the parking brake is re ...

    Using the Delete All Name Tags Command
    The delete all name tags command deletes all stored phone book name tags and route name tags for OnStar, if stored. To delete all name tags: 1. Press . ► For vehicles without a navigation sy ...

    Exterior
    Exterior To adjust the mirrors: 1. Turn the control knob to the L (left) or R (right) selecting the driver or passenger mirror. 2. Push the control knob to the left, right, up, or down to a ...