2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Extended Cab Long Box: Rear view showing tailgate, taillights, and exhaust pipe of pickup truck

Rear view of a pickup truck showcasing the tailgate with handle, prominent taillights on each side, exhaust pipe on the right, and the extended cab interior visible through the rear window.

View Dimensions of the 2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Extended Cab Long Box

View 30 images of the 2011 GMC Sierra 3500HD III (GMT900, facelift 2011) Extended Cab Long Box

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