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 in Emergencies
    There are times when steering can be more effective than braking. For example, you come over a hill and find a truck stopped in the lane, or a child darts out from between parked cars and stops ri ...

    Using the Tire Sealant and Compressor Kit to Temporarily Seal and Inflate a Punctured Tire
    Follow the directions closely for correct sealant usage. When using the tire sealant and compressor kit during cold temperatures, warm the kit in a heated environment for five minutes. Thi ...

    Engine Coolant Temperature Gauge
    English Shown, Metric Similar This gauge shows the engine coolant temperature. If the indicator needle moves to the hot side of the gauge toward the shaded area, the engine is too hot. If the v ...