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:

    Tachometer
    The tachometer displays the engine speed in revolutions per minute (rpm). ...

    Trip Odometer
    Press the trip odometer reset stem until TRIP displays. This display shows the current distance traveled in either kilometers (km) or miles (mi) since the last reset for the trip odometer. The trip o ...

    Keys
    WARNING Leaving children in a vehicle with the ignition key is dangerous for many reasons. Children or others could be badly injured or even killed. They could operate the power windows or other cont ...