All-new, with new diesel, new Denali models. IntroductionThe GMC Sierra HD line of heavy duty trucks has been reengineered from the ground up for 2011, with a new frame, new front and rear suspensions, bigger brakes, and a new, more powerful Duramax 6.6-liter turbo diesel. The Sierra Denali HD is a 2500HD Crew Cab with a choice of Vortec 6.0-liter V8 or the Duramax diesel with the latest Allison six-speed automatic. At the same time, a luxurious new Denali model brings premium features and styling to the heavy-duty line
27,499Seagoville, TXSeagoville, TX at autoshopper.com