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:

    Key Lock Release
    Vehicles with an automatic transmission are equipped with an electronic key lock release system. The key lock release is designed to prevent ignition key removal unless the shift lever is in P ( ...

    XM™ Satellite Radio Antenna System
    The XM Satellite Radio antenna is located on the roof of the vehicle. Keep the antenna clear of obstructions for clear radio reception. If the vehicle has a sunroof, the performance of the XM s ...

    Taillamps, Turn Signal, Stoplamps, and Back-Up Lamps
    A. Taillamp/Sidemarker Lamp B. Taillamp C. Stop/Turn Signal Lamp D. Back-up Lamp To replace any one of these bulbs: 1. Open the trunk. See Trunk Release . 2. Remove the taillamp assembly ...