GMC unveils the Sierra HD All Terrain X, a Duramax turbodiesel-powered addition to the brand’s off-road trim lineup. The new Duramax in the Sierra and Silverado HDs produces 445 hp and 910 lb. of torque.
Chevrolet’s Colorado fuel cell Army test truck is made for modular powerChevrolet continues work on zero emission hydrogen fuel cell tech, and it's now providing a just-revealed Colorado fuel cell vehicle to the U. Army for.