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:

    First Engine Oil Change After Every 160 000 km/100,000 Miles
    • Automatic transmission fluid change (normal service). See Automatic Transmission Fluid . • Spark plug replacement. An Emission Control Service. ...

    Battery Power Protection
    The battery saver feature is designed to protect the vehicle's battery. If some interior lamps are left on and the ignition is turned off, the battery rundown protection system automatically tu ...

    Using the Delete Command
    The delete command allows specific name tags to be deleted. To use the delete command: 1. Press and hold for two seconds. The system responds with “Ready” followed by a tone. 2. Say “D ...