GMC Sierra All Terrain HD 4×4 off-road concept to take on F-150 Raptor


If you love big off-road trucks, GMC got one for you. GMC is introducing its new Sierra All Terrain HD concept to rival against the popular Ford F-150 SVT. While it is a 4×4 off-road concept, the GMC Sierra All Terrain HD is still providing refinements and advanced technology for a comfortable and luxurious ride.

The 2011 Sierra All Terrain HD concept is a 4×4 truck that comes in a four-door configuration. It is equipped with a 6.6-liter Duramax diesel V8 engine and mated to a six-speed automatic transmission. Power output for the V8 diesel engine is rated at 397 horsepower and a staggering 765 pound-feet of torque.

“The Sierra All Terrain HD concept takes GMC’s outstanding new HD platform to the next level, marries it to the legendary Duramax diesel/Allison transmission, and provides a heavy-duty expression of GMC’s premium All Terrain package,” said Lisa Hutchinson, GMC product marketing director. “It delivers the exceptional capabilities of the Sierra HD – hauling, towing and performance – and applies them to the toughest driving environments. It’s the ultimate professional-grade tool for construction crews, ranchers and adventurers whose activities aren’t limited by where the pavement ends.”

To make it looks and acts like a 4×4 off-road truck, GM raised the Sierra All Terrain HD concept about 3 inches higher than a normal Sierra HD, and at the same time providing a wider 73-inch track. The result is about 11.8 inches ground clearance from the skid plates. Fox off-road shocks were used to provide stability at this height. To round out the 4×4 package, GM added 20-inch aluminum wheels wrapped in 35-inch-tall BFGoodrich KM2 mud terrain tires. Large fender flares had to be used to cover the big wheels.

What makes this 4×4 truck unique is that it comes with a luxurious interior and hi-tech amenities. The Sierra All Terrain HD comes with two-tone dark gray leather seats matched with embossed carbon fiber-style leather on the seating surfaces and red contrast stitching. Additionally, leather-wrapped interior features in the steering wheel, instrument panel and center console. It also comes with an 80-gigabyte hard drive with map data for the navigation system.

Like most GM concepts, it will never see the light of day unless there is a sense of high interest in the concept model. Right now, GM is feeling out the market before it really commits to mass produce the Sierra All Terrain HD concept. But hopefully, aftermarket companies would pick up this concept if GM fails to deliver.

The Sierra All Terrain HD 4×4 concept will make its debut at the 2011 Detroit Auto Show in January, and we’ll know for sure if it generates enough interest for GM to mass produce.

  • John

    This thing kicks ass from every angle, the interior rivals my BMW M5 and it looks like it could rotate the planet just sitting there!
    GM Management this message is for you…This design encompasses all of your engineering prowess and dramatically raises the bar above any other manufacturer out there. I know a winner when I see one and THIS IS IT!!! Best damn truck I have ever seen.


  • john

    thies truck is amazing the way it is the whole point is to have an all terrian truck with all of the luxeries of a regualr truck doin good gm lets see it mass produced

  • Luke

    It,s about time GM get,s Craking…