Related: GM Redesigns Duramax 6.6L for 2017 Silverado, Sierra
GMC Introduces Sierra HD All Terrain X
The 2017 Sierra HD All Terrain X joins Canyon and Sierra 1500 as the third model in GMC’s limited-edition All Terrain X series.

Photo of the Sierra 2500HD All Terrain X courtesy of GMC.

Photo of the Sierra 2500HD All Terrain X courtesy of GMC.
GMC has introduced the 2017 Sierra HD All Terrain X, which joins the Canyon and Sierra 1500 as the third model in GMC’s All Terrain X series.
The vehicle is offered on the Sierra 2500HD crew cab 4WD with a 6.0L gas V-8 engine or the all-new Duramax 6.6L V-8 turbo-diesel. The new Duramax delivers SAE-certified 445 hp (332 kW) and an SAE-certified 910 lb.-ft. of torque (1,234 Nm), according to the uatomaker.
The vehicle comes equipped with LT275/65R18 Goodyear Duratrac MT-rated tires, black power-adjustable heated and power-folding trailering mirrors with integrated turn signals, LED rear guidance lamps, and LED amber clearance lamps.
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, according to the automaker. 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, remote-locking tailgate, remote starting system, rear vision camera, adjustable pedals, heated front seats, and wireless charging.
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