Detroit 2011: GMC Sierra All Terrain Concept is steroid-riddled awesome
We have to admit, we felt a pang of sympathy for the mighty GMC Sierra All Terrain Concept. While TheDodge Ramrunner and Ford F-150 SVT Raptor both held prominent spots in their respective booths at the2011 Detroit Auto Show, the Sierra All-Terrain Concept was tucked away in a corner all by its lonesome. It seems hardly a fair fate for a truck that boasts ground-stomping Fox Racing external bypass shocks, aggressive fender flares and a monstrous lift.
General Motors managed to yank a full 397 horsepower and 765 pound-feet of torque from the 6.6-liter Duramax diesel engine…
General Motors managed to yank a full 397 horsepower and 765 pound-feet of torque from the 6.6-liter Duramax diesel engine…



