GMC Updates Sierra Lineup, Adds More Denali Variants

GMC's Denali-badged vehicles - Denali meaning "the high one", referencing Mt. McKinley - have always been the Cadillacs of trucks (except for Escalades, which are actually Cadillac trucks).

Sitting somewhere just south of Premium Luxury, Denalis have always provided buyers with well-equipped, more luxurious versions of GMC's regular lineup. For 2011 the General will be releasing the Sierra Denali HD based on the GMC 2500 (3/4 ton) and 3500 (1-ton) Heavy Duty models.

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2011 GMC Sierra HD gets New 6.6-Liter V8 Diesel with 397HP and a Denali Edition

About a month after the introduction of the 2011 Chevrolet Silverado, General Motors released details on the Chevy's twin and the firm's second rival to Ford's 2011 F-Series Super Duty, the 2011 GMC Sierra Heavy-Duty (HD) that will go on sale this summer.

Featuring the same mechanical tweaks as the latest Silverado, the GMC Sierra enters the 2011 model year with a new 6.6L Duramax turbo diesel, suspension and brake upgrades as well as a new Denali version.

We already knew about the 6.6-liter V8 diesel from the Silverado, but GM has now released output figures for the new engine that delivers 397 horsepower at 3,000 rpm and 765 lb.-ft. of torque (1,037 Nm) at 1,600 rpm.

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