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:

    AM-FM Radio
    For vehicles equipped with the MyLink or IntelliLink infotainment system, see the separate MyLink/ IntelliLink Features and Functions Guide for more information. Control Buttons The buttons used t ...

    Automatic Dimming Rearview Mirrorwith Compass
    Your vehicle may have an automatic-dimming rearview mirror with a compass. (On/Off): This is the on/off button for the automatic dimming feature and compass. ...

    Voice Recognition
    The voice recognition system uses commands to control the system and dial phone numbers. Noise: The system may not recognize voice commands if there is too much background noise. When to Spe ...