GMC Logo2011 GMC Sierra 2500HD III (GMT900, facelift 2011) Extended Cab Long Box in Summit White: Heavy-duty pickup truck with extended cab and long cargo box.

Heavy-duty pickup truck with extended cab and long cargo box.

Pickup truck showcasing an extended cab with four doors, long cargo bed, large chrome grille, and rugged tires designed for durability and utility.

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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Small red car