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:

    Driving Through Deep Standing Water
    Notice: If you drive too quickly through deep puddles or standing water, water can come in through your engine’s air intake and badly damage your engine. Never drive through water that is slight ...

    Setting the Clock
    See Clock (Radio with CD and Touchscreen) for more information. ...

    Fog Lamps
    To replace the front fog lamp bulb: 1. Locate the fog lamp located under the front fascia. 2. Disconnect the electrical connector from the fog lamp bulb assembly. 3. Remove the bulb by turning it c ...