GM has just announced the 2011 Chevrolet Silverado HD price today which will be sold in LT and LTZ trim levels.
The 2011 Chevrolet Silverado HD comes equipped with the improved Duramax diesel engine that produces 397 horsepower and 765 lb-ft and also features new technologies like trailer sway control, smart exhaust braking and hill start assist.
The 2011 Chevrolet Silverado HD also received a new chassis with a high-strength steel frame that enables an increased trailer capacity to 20,000 lbs (9,072 Kg) and a payload capacity of 6,335 lbs (2,873 Kg).
The  2011 Chevrolet Silverado HD starts at 27,965 USD and production for the heavy duty pickup truck will start in May while dealership arrival is scheduled for early June 2010.
GM press release :
DETROIT – Chevrolet today announced pricing for the 2011 Silverado HD, highlighted by carryover pricing on the improved Duramax diesel engine and Allison transmission.  This means best-in-class horsepower and torque at 397 HP and 765 lb-ft of torque, respectively, for the same option price as 2010 models.
“Heavy duty pickup customers are some of the most knowledgeable out there, and we heard them loud and clear. They want maximum power and capability at the best value possible,” said Product Director Maria Rohrer.  “We delivered huge increases in power and capability while actually improving our fuel economy with the Duramax diesel engine – all while maintaining current pricing.”
Silverado HD base pricing starts at $27,965, which excludes a $995 destination charge. An upgrade to the proven Duramax diesel engine and Allison transmission combination runs $8,395 – the same amount as in 2010, despite the significant improvements in fuel economy – including a highway cruising range of up to 680 miles; aforementioned increases in performance; and new B20 biodiesel capability.
The 2011 Silverado HD also offers the latest technology in driver confidence and control features such as trailer sway control, smart exhaust braking, hill start assist and more.  An all-new chassis, featuring a fully-boxed, high-strength steel frame combines with the aforementioned engine improvements to increase trailering capacity to 20,000 pounds (9,072 kg), and payload capacity to 6,335 pounds (2,873 kg).
The Silverado HD will be offered in work truck, LT and LTZ trim levels, and will begin production in May.  Delivery to dealers is expected in early June. All models come with a segment-best five-year/100,000-mile powertrain warranty.
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Source: GM