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:

    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 ...

    Steering Tips
    It is important to take curves at a reasonable speed. Traction in a curve depends on the condition of the tires and the road surface, the angle at which the curve is banked, and vehicle speed. Wh ...

    Engine Oil
    To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these simple, but important steps will help protect your investment: • Always use ...