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:

    Steering Column Shift Lever
    If the vehicle has a steering column shift lever, use this procedure to shift the vehicle into P (Park): 1. Hold the brake pedal down. 2. Move the shift lever into P (Park) by pulling the shift ...

    Instrument Cluster
    English Shown, Metric Similar English eAssist Shown, Metric eAssist Similar ...

    Tire Pressure Monitor Operation
    This vehicle may have a Tire Pressure Monitor System (TPMS). The TPMS is designed to warn the driver when a low tire pressure condition exists. TPMS sensors are mounted onto each tire and wheel ...