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 an Advisor can run a check., and an Advisor can run a check.

    See also:

    Exit Lighting
    This allows the selection of how long the exterior lamps stay on when leaving the vehicle when it is dark outside. Press the MENU/SELECT knob when Exit Lighting is highlighted. Turn the knob to ...

    Engine Oil
    To ensure proper engine performance and long life, careful attention must be paid to engine oil. Following these simple, but important steps will help protect your investment: - Always use e ...

    License Plate Lamp
    1. Remove the two screws holding each of the license plate lamps to the molding that is part of the liftgate. 2. Twist and pull the license plate lamp assembly forward through the molding openi ...