2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box: Audio system and climate control panel with wood trim

Close-up showing a touchscreen audio system with FM, XM, and AUX options, flanked by wood trim, accompanied by dual-zone climate control knobs and buttons in a vehicle dashboard.

View Dimensions of the 2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box

View 21 images of the 2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box

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