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:

    Calling for Assistance
    When calling Roadside Assistance, have the following information ready: • Your name, home address, and home telephone number. • Telephone number of your location. • Location of the ve ...

    Content Theft-Deterrent
    Your vehicle is equipped with a content theft-deterrent alarm system. Here is how to operate the system: 1. Open the door. 2. Lock the door with the power door lock switch or the remote key ...

    Wheel Alignment and Tire Balance
    The tires and wheels on your vehicle were aligned and balanced carefully at the factory to give you the longest tire life and best overall performance. Adjustments to wheel alignment and tire bal ...