GMC Logo2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Standard Box: Rear and side view of extended cab pickup with standard box and dual exhaust.

Rear and side view of extended cab pickup with standard box and dual exhaust.

White pickup shown from rear and right side, featuring extended cab with four doors, standard bed with flat bed cover, dual exhaust pipe visible, chrome side steps, and alloy wheels.

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

View 19 images of the 2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Standard Box

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