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:

    Shifting In or Out of Neutral
    1. With the vehicle running and the engine at an idle, set the parking brake. 2. Place the transmission into N (Neutral). Shift the transfer case in one continuous motion into or out of the N (Neutr ...

    CD/DVD
    To select tracks on a CD/DVD: Press and release or to go to the next or previous track. ...

    CD/DVD Player Messages
    Disc Format Error: This message displays if the disc is inserted with the disc label wrong side up, or if the disc is damaged. Disc Region Error: This message displays if the disc is not from a corre ...