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:

    Other Rainy Weather Tips
    Besides slowing down, other wet weather driving tips include: ○ Allow extra following distance. ○ Pass with caution. ○ Keep windshield wiping equipment in good shape. ○ Kee ...

    Oil Pressure
    This display shows the oil pressure in either kilopascals (kPa) or pounds per square inch (psi). ...

    Checking Engine Oil
    It is a good idea to check the engine oil level at each fuel fill. In order to get an accurate reading, the vehicle must be on level ground. The engine oil dipstick handle is a yellow loop. See En ...