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:

    Turn and Lane-Change Signals
    Turn and Lane-Change Signals Move the lever all the way up or down to signal a turn. An arrow on the instrument panel cluster flashes in the direction of the turn or lane change. Raise or l ...

    Safety Belt Extender
    If the vehicle’s safety belt will fasten around you, you should use it. But if a safety belt is not long enough, your dealer will order you an extender. When you go in to order it, take the he ...

    License Plate Lamp
    The license plate lamps for this vehicle are on the trunk lid. To replace one of these bulbs: 1. Open the trunk. See Trunk for more information. 2. Push the end on either of the lamp assembli ...