Horn

To sound the horn, press the center pad on the steering wheel.

    See also:

    2011 GMC Sierra 2500HD Review
    The "professional grade" brand unveiled the 2011 GMC Sierra Heavy Duty lineup at the 2010 NTEA Work Truck Show. Most of the technical specifications of GM's HD pickups are identical, but ...

    Cleaning the Video Screen
    Use only a clean cloth dampened with clean water. Use care when touching or cleaning the screen as damage could result. ...

    Audio/Video (A/V) Jacks
    If available, the A/V jacks are located on the rear of the floor console. They allow audio or video cables to be connected from an auxiliary device such as a camcorder or a video game system. The ...