In the same year as an all-new Sierra 2500HD was introduced, GMC continued to allow customers a chance to ... Vortec family while diesel propulsion was available with a 6.6-liter Duramax powerplant.

Actual terms vary by lender. Used This truck is a beast, but with the Duramax diesel engine, its fuel efficient as well. my best average is 21 mpg which is insane for a truck this size.

Actual terms vary by lender. I bought this GMC Sierra 2500HD for camping. I got the extended cab so that I would have a 6 1/2 ft bed and not too long of wheel base. It is a great truck.

In 2012, the Sierra 2500HD received enhancements aimed at improving performance and comfort. Notably, the integration of the available 6.6-liter Duramax Turbo Diesel V8 engine paired with an ...

As a result, the consumer wins -- whether hauling equipment to a job site, working a farm or towing a boat, the Sierra 2500 and 3500 are built for tough work, and are some of the best-designed trucks ...

The 2024 GMC Sierra 2500HD has done just that by pumping the power of its 6.6-liter Duramax turbo-diesel up to 470 horsepower and 975 lb-ft of torque, which gives its Crew Cab configuration a best ...