All the new HD 2011 HD Sierra fertile  ground for the concept chassis modified by production and 4WD Duramax  Diesel / Allison 1000 six-speed powertrain. The suspension is upgraded  and unique body dimensions, including ground clearance and a wider track  and approach / departure angle Grand supply and improve off-road  capability while maintaining a high load capacity and towing. A dark  charcoal, which shows the reddish color anodized, Pls make sure your  vision – all-terrain HD painted metal iridium.
Based on the chassis of 2011 Sierra HD  trucks, all terrain offering full HD box steel frame with incredible  strength and rigidity. This includes a model of production “a new  independent front and leaf springs in the rear suspension is asymmetric,  but with 73 inch larger (1853 mm), length (front and back), increase  stability when driving off road and highway front and Manufactured  Sierra 2500HD rear track 68.8 inches (1.748 mm) 67.3 inches (1709 mm),  respectively.
GMC Sierra All-Terrain HD Concept will  be the new 6.6L Duramax turbo-diesel production based on the V-8, and  Allison 1000 six-speed automatic combination powertrain in the 2011  Sierra HD trucks offer. The Duramax is at 397 hp (296 kW) and 765  lb.-ft. of torque rating (1037 Nm).
The powerful Duramax 6.6L is more fuel  efficient – fuel economy to 11 percent over previous versions – and  reduce NOx emissions to 63 percent. Trends in railway efficiency  supported by the transmission, Allison 1000 which requires less power  than the engine torque to the axle funnel. They also come with the  function of “smart” from engine braking to save wear on the brakes on  steep slopes, a feature that helps the production of Sierra HDS.





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