GMC Sierra Denali 2500HD and 3500HD -- the first offerings of the exclusive Denali line on a heavy-duty GMC pickup -- lead a new Sierra heavy-duty truck lineup for 2011.
The comprehensively redesigned roster of 2011 Sierra 2500HD and 3500HD trucks includes a new, more powerful 6.6L Duramax turbo diesel that delivers 397 horsepower and 765 lb.-ft. of torque.
The new 2011 Denali HDs are crew cabs available only in the 2500 series (3/4-ton), 2WD and 4WD configurations, as well as the 3500 Series (1-ton) 2WD and 4WD in both single-rear-wheel and dually versions.
A 6.0L gas V-8/six-speed automatic powertrain is standard and the new Duramax 6.6L turbo diesel/Allison 1000 six-speed transmission powertrain is available on all Denali HDs.
The Denali four-bar, chrome grille with round air inlets distinguishes the Sierra Denali HDs on the outside, along with body-color bumpers, chrome door handles, chrome accents and 17- (Dually), 18- and 20-inch polished forged aluminum wheels.
On the inside they include Denali-specific brushed aluminum trim, power-adjustable pedals, a Bose premium surround audio system and 12-way power seats.
The 2011 Sierra Denali HD features great towing capability (21,700 lbs.) and payload (6,635 lbs.) supported by all-new fully-boxed, high-strength-steel frames and strong suspensions for maximum capability and exceptional ride characteristics.
An array of control features, including trailer sway control, integrated trailer brake control, hill start assist, automatic grade braking, intelligent brake assist and larger brakes are offered.
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