2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box: Rear view of pickup truck with tailgate and exhaust pipe.

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Rear view of a white extended cab pickup truck showing the tailgate with badges, rear bumper with hitch receiver, large exhaust pipe on the right, and rear window with sliding panel.

View Dimensions of the 2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box

View 39 images of the 2007 GMC Sierra 2500HD III (GMT900) Extended Cab Long Box