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:

    Cleaning the Inside of Your Vehicle
    Your vehicle’s interior will continue to look its best if it is cleaned often. Although not always visible, dust and dirt can accumulate on your upholstery. Dirt can damage carpet, fabric, leathe ...

    Engine Compartment Overview
    When you open the hood on the 4.2L L6 engine, here is what you will see: A. Engine Air Cleaner/Filter. B. Engine Coolant Recovery Tank. C. Windshield Washer Fluid Reservoir. D. Power Steering Fl ...

    AM-FM Radio
    For vehicles equipped with the MyLink or IntelliLink infotainment system, see the separate MyLink/ IntelliLink Features and Functions Guide for more information. Control Buttons The buttons used t ...