The 2009 Sierra HD are available in Work Truck, SLE and SLT trims. The range of configurations -- three cab styles, three cargo box styles and five wheelbase lengths -- delivers tremendous choice.
For 2009, changes to the Sierra 2500HD and 3500HD lineup include a number of safety-related and convenience features that bolster an already comfortable and refined driving experience. Sierra HD models have a distinctive front end with a prominent GMC emblem set in a large, chrome-ringed grille.
Sierra 2500HD and 3500HD are offered in regular, extended and crew cab configurations, which are complemented with standard (6-foot 6-inch) and long (8-foot) cargo box lengths. Sierra 3500HD models also are available with the Dually dual rear-wheel configuration on a long box.
The standard engine is a 6.0L gas V-8 rated at a best-in-class 360 horsepower and 380 lb.-ft. of torque on single rear-wheel configurations (up to 10,000 pounds gross vehicle weight rating). A Hydra-Matic 6L90 six-speed automatic transmission is paired with the engine.
A clean and powerful Duramax 6.6L turbo-diesel engine is available. It continues to lead the segment in power and torque, with power ratings of 365 horsepower and 660 lb.-ft. of torque.
Maximum towing capacity is 16,500 pounds when equipped with a fifth-wheel hitch.
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