OnStar®

If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview on page 14‑1 for more information.

    See also:

    Rear Doors (Extended Cab)
    Rear Doors (Extended Cab) To open a rear access door from the outside, first open the front door. Then, use the handle located on the front edge of the rear access door to open it. The rear acces ...

    Heated Seats
    Uplevel Climate Control System Shown, Base Similar If available, the buttons are near the climate controls. To operate, the ignition must be in ON/RUN. Press or to heat the driver or passenge ...

    Engine Overheating
    If the vehicle has the Duramax® Diesel engine, see the Duramax Diesel Supplement for more information. The vehicle has several indicators to warn of engine overheating. There is a coolant temperatu ...