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:

    Forward Collision Alert (FCA) Warning Light
    These lights are located on the center of the instrument panel. The vehicle ahead light comes on when a vehicle is ahead and a possible collision can occur. The forward collision alert comes o ...

    Rear Vision Camera Location
    The camera is located above the license plate. The area displayed by the camera is limited. It does not display objects that are close to either corner or under the bumper and can vary depending ...

    When the System Does Not Seem to Work Properly
    The following messages may be displayed on the DIC: SERVICE PARKING ASSIST: If this message occurs, take the vehicle to your dealer to repair the system. PARK ASSIST OFF: If the URPA system does n ...