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 Cluster
    The instrument panel cluster is designed to show how the vehicle is running. It shows how fast the vehicle is going, how much fuel has been used, and many other things needed to drive safely and ...

    Transmission Messages
    SERVICE TRANSMISSION This message displays if there is a problem with the transmission. See your dealer. SHIFT TO PARK This message displays when the transmission needs to be shifted to P ( ...

    Brake Adjustment
    Every time you make a brake stop, your disc brakes adjust for wear. ...