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:

    Infotainment Control Buttons
    The buttons on the faceplate are used to start primary functions while using the infotainment system. VOL/ (Volume/Power): 1. Press to turn the system on and off. 2. Turn to adjust the volum ...

    Lamps On Reminder
    For vehicles with the lamps on reminder light, it comes on when the lights are in use. ...

    Replacing Safety Belt System Parts after a Crash
    WARNING! A crash can damage the safety belt system in the vehicle. A damaged safety belt system may not properly protect the person using it, resulting in serious injury or even death in a ...