2015 Chevrolet Silverado 2500HD

The 2015 Chevrolet Silverado 2500HD and 3500HD are engineered to be stronger and smarter, delivering the capability heavy-duty truck customers demand, along with greater refinement and control for more comfort and confidence on the job and on the road.

Silverado HD models are available in Work Truck (WT), LT and LTZ trims, and offered in regular cab, double cab and crew cab configurations. The new double cab model replaces the extended cab and features forward-hinged rear doors, allowing easier access in tight parking spaces.

The trucks are available with all-new, stronger 6'6" and 8-foot cargo boxes with standard CornerStep bumpers, EZ Lift-and-Lower tailgates, and other features that make cargo handling easier.

The new front end is designed to deliver more efficient airflow to the cooling system and engine air intake, helping maintain power when towing under adverse conditions.

The cabs feature inlaid doors, fitting snugly into recesses in the body sides for reduced turbulence and wind rush. Combined with new triple door seals, the doors help create a quieter interior.

The sturdy chassis and heavy-duty suspensions contribute to greater payload and towing capabilities: maximum payload is 7,374 pounds; maximum towing is at 19,600 pounds.

The standard engine is a 6.0L FlexFuel V-8, which is rated at 360 horsepower and 380 lb.-ft. of torque -- and tuned to deliver excellent low-rpm torque. It's matched with a six-speed automatic transmission.

A bi-fuel version of the 6.0L V-8 is now offered on 2500 and 3500 models in all three cab styles. The system enables customers to switch easily between gasoline and compressed natural gas.

The Duramax 6.6L turbodiesel and Allison 1000 six-speed automatic transmission combination is rated at 397 horsepower and 765 lb.-ft. of torque.