GMC Sierra All Terrain HD Concept: New Pictures Released Ahead of Detroit Debut

Colum Wood
by Colum Wood

With a planned debut at the Detroit Auto Show next week, GMC has released a new selection of photos of its overtly excessive Sierra All Terrain HD Concept. We first brought you coverage of this new truck several weeks back, but the new gallery of pics provides more angles and shows the big off-roader’s interior.

GMC reps haven’t made any comments about if the All Terrain HD Concept will see production. Instead, its likely to preview certain styling elements that the Sierra HD will get in the near future, and could hint at a special off-road package.

Combining the standard Crew Cab with the 5′ 8″ box currently not offered on HD models, the All Terrain concept then gets a special front end with a massive front grille, custom matte-chrome accenting and LED lighting. A two-inch lift is also part of the package, with Fox Shox and custom control arms. To help the truck’s off-road capability, it has sculpted front end to deliver a maximum approach angle and the side steps that are retractable as well. In addition, the entire undercarriage is coated in a special hard composite for maximum durability.

Custom 20-inch 8-lug wheels give a real rig look to the diesel monster, as do flared fenders that house a two-inch wider track. Those 20s also help give excellent AWD capability when matched with a set of 35-inch-tall BFGoodrich KM2 “mud terrain” tires.

Under the hood continues to be GMC’s new 6.6-liter Duramax diesel V8 making 397-hp and 765 ft-lbs of torque.

Look for more news and info and live pics of this truck with coverage from the Detroit Auto Show starting Monday, January 10th. Until then, check out our Detroit Auto Show Preview here.

GALLERY: GMC Sierra All Terrain HD Concept

Colum Wood
Colum Wood

With AutoGuide from its launch, Colum previously acted as Editor-in-Chief of Modified Luxury & Exotics magazine where he became a certifiable car snob driving supercars like the Koenigsegg CCX and racing down the autobahn in anything over 500 hp. He has won numerous automotive journalism awards including the Best Video Journalism Award in 2014 and 2015 from the Automotive Journalists Association of Canada (AJAC). Colum founded Geared Content Studios, VerticalScope's in-house branded content division and works to find ways to integrate brands organically into content.

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  • STEVE STEVE on Feb 26, 2011

    Just wanted to send a quick note that I hope this exact truck (GMC SIERRA ALL TERRAIN) goes into production. I would love one in my yard and off road. Thanks Steve G.

  • Geoff Graham Geoff Graham on Mar 05, 2011

    Reminds me of the Terradyne concept of 2000. Doubt anyone remembers that one.