GMC's Sierra HD is ready to attack all terrain

GMC is ready to take its most powerful pickup ever for a trip off-road.

The 2017 Sierra 2500 HD will be offered in an All Terrain X model that can accommodate the truck’s new 445 hp, 910 lb-ft 6.6-liter turbo-diesel V8, along with its 360 hp 6.0-liter gasoline V8.

The crew cab All Terrain X comes equipped with the Sierra’s Z71 off-road suspension, an Eaton automatic locking rear differential, 18-inch wheels wrapped with chunky Goodyear Duratec mud-terrain tires, and an underbody skid plate.

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Appearance tweaks include blacked-out trim, tubular side steps, leather trim, and a sport bar that can mount auxiliary lights, while luxury touches run the gamut from leather trimmed seats to a heated steering wheel and a wireless smartphone charging system. Front and rear park assist and a backup camera should come in handy when navigating the behemoth through tight spots.

GMC already announced All Terrain X versions of the Colorado and Sierra 1500, so the heavy duty version rounds out the lineup and gives it a closer competitor to the Ram 2500 Off Road and Ford’s Super Duty pickups equipped with the FX4 package.