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:

    Halogen Bulbs
    WARNING! Halogen bulbs have pressurized gas inside and can burst if you drop or scratch the bulb. You or others could be injured. Be sure to read and follow the instructions on the bulb pac ...

    Power Reclining Seatbacks
    To raise or recline the seatback, tilt the top of the control forward or rearward. See Reclining Seatbacks. ...

    Power Windows
    The power window switches located on the driver door control all four windows. Each passenger door has a switch that controls only that window. Press the switch to lower the window. Pull the fron ...