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:

    Engine Compartment Overview
    When you open the hood on the 3.9L V6 engine, here is what you will see: A. Underhood Fuse Block. B. Remote Positive (+) Battery Terminal. See Jump Starting. C. Windshield Washer Fluid Reservoi ...

    Power Steering Fluid (3.6L V6 Engine)
    See Engine Compartment Overview for information on the location of the power steering fluid reservoir. ...

    Other Warning Devices
    If you carry reflective triangles, you can set them up at the side of the road about 300 feet (100 m) behind your vehicle. ...