2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box: Rear view of extended cab long box pickup with prominent tailgate and dual taillights

Rear view of extended cab long box pickup with prominent tailgate and dual taillights

Rear view of a pickup truck with extended cab long box, showing tailgate with handle, dual red taillights, black bumper with towing hitch, and right-side exhaust pipe.

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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