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:

    Tire Pressure Monitor System
    The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. TPMS sensors are mounted on each tire and wheel assembly, except the spare tire. The TPMS ...

    Collision Parts
    Genuine GM Collision parts are new parts made with the same materials and construction methods as the parts with which your vehicle was originally built. Genuine GM Collision parts are your best ...

    Ashtrays
    For vehicles with a removable ashtray, the ashtray can be placed into the front console cupholders. To open the ashtray, lift the lid of the ashtray. After using, close the lid. To empty the ashtr ...