The 2017 GMC Sierra HD All Terrain X is a Truck Made for Weekend Warriors

To an avid off-roader, there isn't anything better than the crumbling of earth under off-road tires, the roar of a V8 engine or the thrill of adventure. Encompassing this same rugged enthusiasm is the new Sierra HD All Terrain X, a truck designed to explore and dominate uncharted territory with bold style. Equipped with special performance equipment and the latest technology, this model is the most trail-capable Sierra yet.