GMC, in a Winter Tradition, Puts Snow Tracks on a Sierra HD Pickup

• GMC has built a customized truck for winter weather every year at this time since 2017.
• At the Chicago auto show, the automaker showed this Sierra HD AT4 All Mountain on a set of snow tracks that, GMC said, cost $10,000 apiece.
• It’s not all just for fun: GMC takes the custom trucks out to Colorado where they have a second life in snow rescue.

Since 2017, GMC has built a customized Sierra for winter adventuring every winter. This year, it’s the GMC Sierra HD AT4 All Mountain that’s ready to tackle whatever a mountain can throw at it. This year is no different, as we noticed the tracked, tank-size heavy-duty truck proudly sitting at GMC’s display booth. This year’s truck is righteously badass, as it’s built around the new-for-2020 GMC Sierra HD AT4. The AT4 comes with a standard off-road suspension, skid plates, red tow hooks, two-speed transfer case, hill descent control, black chrome exterior trim, and GMC’s exclusive MultiPro tailgate.

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The AT4 All Mountain is powered by the Sierra HD’s standard 6.6-liter V-8, which makes 401 horsepower and 464 lb-ft of torque. That ought to get it up and down a steep grade, even if it is less powerful than the optional Duramax diesel. The All Mountain AT4 has a unique custom wrap depicting the GMC logo over a mountain and snow-sports theme that’s hard to miss, not to mention its Mattracks 150 Series tracks replacing the tires at all four corners. These tracks ring up at $10,000 apiece, according to a GMC spokesperson.

The Sierra HD All Mountain has more features that align with the theme. There’s a K2 Sport bar that has a weatherproof Kicker System and LED lights mounted to it. There also a 30-inch Ridgid light bar up front to make sure that you can see your way up the mountain. The underside is well illuminated, with LED lighting in the wheel wells and underbody. Out back, there is a hitch-mounted snowboard and ski carrier to truly complete the all-mountain adventuring theme.

It’s a display object at the Chicago auto show, sure, but GMC actually will use the truck on Vail Mountain in Colorado, where it has deployed trucks from previous years as rescue and support vehicles on one of the best snow sports mountains in the United States.