The 2011 Sierra Denali HD pickup was launched at the National Truck Equipment Association Convention in St. Louis. Dealerships will be receiving this car starting in the early summer. General Motors Co.'s GMC division said that this pickup is the sibling of the heavy-duty Chevrolet Silverado, which was unveiled at the Chicago Auto Show. The all-new Sierra Denali HD is powered by the 6.6-liter Durmax turbo diesel engine, the most powerful unit currently offered by the carmaker.
GMC officials claim that this new engine can deliver 397hp and 765 pound-feet of torque. It's pitted against Ford Motor Co.'s all-new 6.7-liter V-8 diesel engine, which generates 385hp and 735 pound-feet of torque. In a news release, Lisa Hutchinson, GMC product marketing director, described the new Sierra Denali HD as "the latest expression of GMC's Denali philosophy of blending capability with premium features and styling." GMC will also be offering a 6-liter V-8 gas engine, which has an output of 360hp and 380 pound-feet of torque.
The new GMC heavy-duty trucks are capable of providing up to 20,000 pounds towing capacity and up to 6,335 pounds payload capacity. The new Duramax engine, which is partnered with an Allison six-speed automatic transmission, will also get an 11% fuel economy improvement, as well as 63% lower emissions. GM's heavy-duty pickups will also be updated to include a stronger fully-boxed frame, among other improvements. There's a lot happening with the pickup market as both Ford and GM are launching all-new heavy-duty trucks for the 2011 model year. Chrysler Group LLC is also set to offering its new heavy-duty truck any day now.