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:

    2004 Buick Rainier Review
    The 2004 Buick Rainier leaves little doubt that an automaker can create two different vehicles with different characters from one platform. That's good news, considering all the automakers have ma ...

    Fuel Gage
    The fuel gage shows about how much fuel is in the tank. An arrow on the fuel gage indicates the side of the vehicle the fuel door is on. The gage works only when the ignition is on. When the i ...

    Rear Window Defogger
    (Rear Window Defogger): Press to turn the rear window defogger on or off. The rear window defogger turns off automatically after about 10 minutes. If turned on again it runs for about five ...