Earlier this year GMC dropped the Sierra HD All Terrain X, the most off-road-capable model in the Sierra HD lineup, and one that matches its enhanced capability with trail-ready style and the brand’s signature refinement. It joins Canyon and Sierra 1500 as the third model in GMC’s distinctive, limited-edition All Terrain X series, offered on the Sierra 2500HD crew cab 4WD with a 6.0L gas V-8 engine or the all-new, next-generation Duramax 6.6L V-8 turbo-diesel. More powerful than ever, the new Duramax delivers a segment-topping 445 horsepower and a staggering 910 lb-ft. of torque.
The All Terrain X’s style blends a premium package of monochromatic exterior trim and special equipment, complemented with GMC’s latest technologies. It’s offered with a Black Onyx or Summit White paint job.
Cool new stylish features include 18-inch black aluminum wheels with LT275/65R18 Goodyear Duratrac tires, unique body-color grille surround with All Terrain insert, black belt moldings and bodyside moldings, body-color door handles and power-folding heated side mirrors with integrated turn signals, LED rear guidance lamps and LED amber clearance lamps. Also cool is the black sport side steps and the black sport bar mounted in the bed.
Additional All Terrain equipment includes a spray-on bedliner, Front and Rear Park Assist, the Z71 off-road suspension package, underbody shield, heated steering wheel and all-weather floor liners. The Eaton automatic locking rear differential is also standard.
The 2017 Sierra 2500HD All Terrain X also features GMC IntelliLink with an 8-inch-diagonal color touchscreen, Teen Driver, remote-locking tailgate, remote starting system, Rear Vision Camera, adjustable pedals, leather-appointed seats, heated front seats and wireless charging.