Heavy duty: GMC Sierra 2500HD All Terrain X adds off-road chops, looks

Most of it comes from the Z71 package's off-road suspension, with the remainder of this trim devoted largely to aesthetics.

GMC

As if the Sierra 2500HD wasn't already larger than life.

GMC

Pickup trucks are damned capable right out of the box. But automakers know that buyers will always want a little more, and GMC hopes to meet that demand with its new Sierra 2500HD All Terrain X.

The Sierra 2500HD is the third GMC pickup to, um, pick up the All Terrain X trim, following the Canyon and Sierra 1500. Most of its newfound capability isn't technically new at all -- it gains the Z71 off-road suspension from the All Terrain package, as well as an Eaton locking rear differential and an underbody shield.

The All Terrain X trim, then, is largely an appearance package with some already-available off-road kit coming along for the ride. Upgrades specific to the All Terrain X include 18-inch black wheels, off-road tires, body-color trim pieces and a whole lot of black-painted parts -- side mirrors, B-pillars, side steps and a bed-mounted sport bar.

GMC saw fit to throw some tech into the All Terrain X package too. Standard equipment includes front and rear parking sensors, a heated steering wheel, remote start, wireless phone charging and GMC's 8-inch IntelliLink touchscreen infotainment system.

Buyers have two different engine options with the 2500HD All Terrain X, a 6.0-liter gas V8 or a 6.6-liter turbocharged diesel V8, the latter of which is all new for the 2017 model year. There's no word yet on pricing, but for comparison's sake, a base crew cab 2500HD with four-wheel drive and the gas V8 will set you back $41,825.

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