GMC Adds More Denali Models to the 2011 Sierra Heavy Duty Lineup

2011 GMC Sierra HD w/ the 6.6L Duramax provides an easy 20 + highway work truck. GMC?s new 2011 Sierra Denali HD will now be available in both 2500 (3/4 ton) and 3500 series (1-ton) configurations with the Denali. The new Sierra Denali HDs lead a comprehensively redesigned lineup of 2011 Sierra heavy duty trucks that go on sale this summer ? including the most powerful diesel engine in the segment.