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:

    Instrument Panel
    Instrument Panel A. Air Vents on page 8‑12. B. Windshield Wiper/Washer on page 5‑5. C. Instrument Cluster on page 5‑12. D. Head-Up Display (HUD) on page 5‑33 (If Equipp ...

    Vehicle Personalization (With DIC Buttons)
    Your vehicle may have customization capabilities that allow you to program certain features to one preferred setting. Customization features can only be programmed to one setting on the vehicle and ca ...

    Starter Switch Check
    WARNING When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured. 1. Before starting this check, be sure there is enough room around ...