GMC Unveils the 2011 Sierra Denali HD, a Reborn Work Horse

GMC has always been the tough and tumble professional brand of General Motors. And with the exit of GM medium-duty trucks last year, GMC wanted to make a big splash with its new 2011 Sierra Denali HD at the Work Truck Show in early March — the first offering of the exclusive Denali line on a heavy-duty GMC pickup. The Sierra Denali HD leads a comprehensively redesigned lineup of 2011 Sierra 2500HD and 3500HD trucks that go on sale in early summer, including the most powerful diesel engine in the segment, say GMC officials. 

“The new Sierra Denali HD is the latest expression of GMC’s Denali philosophy of blending capability with premium features and styling,” says Lisa Hutchinson, GMC product marketing director. “It is a premium tool that offers many comfort and infotainment features, along with a maximum towing capacity of 15,600 lbs with the segment’s most powerful diesel — that’s enough to tow a 34-ft-long, three-axle travel trailer.”
Sierra HD’s new 6.6L Duramax turbo diesel delivers 397 hp at 3,000 rpm and 765 lb-ft of torque at 1,600 rpm. The Sierra Denali HD comes exclusively on the 2500HD chassis, in a four-wheel drive  crew cab standard box configuration. A Vortec 6.0L gas V-8/six-speed automatic power train is standard and the new Duramax 6.6L turbo diesel/Allison 1000 six-speed transmission power train is available.

An array of control features are available, including trailer sway control, integrated trailer brake control, hill start assist, automatic grade braking, intelligent brake assist and larger brakes. And purposeful technology, including available mobile WiFi, USB connectivity, Bluetooth connectivity, XM Satellite Radio, OnStar 9.0 and navigation, are also options.