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:

    CD Player
    The CD player can play audio CDs and MP3 CDs. The CD player will not play 8 cm (3 in) CDs. Care of CDs Sound quality can be reduced due to disc quality, recording method, quality of the music recor ...

    Tire Messages
    TIRE PRESSURE LOW ADD AIR TO TIRE On vehicles with the Tire Pressure Monitor System (TPMS), this message displays when the pressure in one or more of the vehicle's tires is low. The low tire pressur ...

    Taillamps and Turn Signal Lamps
    To replace a taillamp or turn signal bulb, do the following: 1. Open the liftgate. 2. Remove the two screws from the taillamp assembly. 3. Pull the taillamp assembly away from the vehicle ...