GMC Sierra All Terrain HD Concept, appearance compared to the 2011 GMC Sierra Hd, re-fitted with a new design of the new grille, also equipped with a new front on the floor under the crash and a new bumper, with a Large 20-inch aluminum alloy ring, and 35-inch BFGoodrich KM2 standard dedicated off-road tires, while the wheel arches have also been heightened, so that this model improves the ground clearance of about three inches or so.
