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:

    Starting the Engine
    Place the transmission in the proper gear. Notice: The engine is designed to work with the electronics in the vehicle. If you add electrical parts or accessories, you could change the way the engin ...

    Steering Wheel Controls
    Steering Wheel Controls For vehicles with audio steering wheel controls, some audio controls can be adjusted at the steering wheel. Press to interact with the available Bluetooth, OnStar, or navig ...

    Windshield Wiper Blade Replacement
    Windshield wiper blades should be inspected for wear or cracking. See Scheduled Maintenance. It is a good idea to clean or replace the wiper blade assembly on a regular basis or when worn. For pr ...