The 2010 GMC Sierra heavy-duty trucks are offered in a range of extremely capable 2500HD (three-quarter-ton) and 3500HD (one-ton) models. They’re designed for hauling everything from a construction crew and their equipment to race car trailers, horse trailers and more.

Sierra heavy-duty trucks 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.

The Sierra HD pickups offer many segment-best capabilities, including 18,500-pound Gross Combined Vehicle Weight Rating for vehicles with a gas V-8 and a 13,000-pound conventional trailer weight rating enabled by a larger-capacity trailer hitch platform. Maximum towing capacity is 16,500 pounds when equipped with a fifth-wheel hitch.

Changes for 2010 are minor and include a pair of new exterior colors and the inclusion of a USB port on all but the base radio.

The standard engine is a 6.0L gas V-8 with variable valve timing. It is rated at 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 with power ratings of 365 horsepower and 660 lb.-ft. of torque. The renowned Allison 1000 six-speed automatic transmission is partnered with the Duramax 6.6L turbo-diesel engine.

Base model estimated mpg: NA

Estimated starting price: $26,600

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