If you think the new General Motors doesn't look like the old General Motors, take a gander at the new GMC Sierra All Terrain HD off-road truck concept. It will be rolled out at the Detroit auto show next month.This is one huge, Hummer-like truck. We love the grille that becomes a front-end skid plate. It's apparently meant to take down the Ford F-Series Raptor, which is just as brawny.
Underneath all that machismo, GM swears there is a 2011 Sierra HD pickup in there somewhere. The concept is built on its chassis with a Duramax engine/Allison six-speed transmission built in. Naturally, it has a beefed up suspension to handle the biggest of bumps.
"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.
The Sierra All Terrain HD features a 5-foot, 8-inch crew cab and a short box in back. And the engine?
It is powered by a 6.6-liter Duramax turbo-diesel V-8 and Allison 1000 six-speed automatic transmission powertrain combination offered in the 2011 Sierra HD trucks. The Duramax is rated at 397 horsepower and an astounding 765 foot-pounds of torque.
Lest we carry the old GM image too far, GM would like to point out the giant engine gets 11% better fuel mileage than its previous version and 63% fewer carbon emissions. It can tow 13,000 pounds.