The new-for-2017 Chevrolet Silverado 2500HD and GMC Sierra 2500HD will use the fifth generation of GM’s Duramax, a 6.6-liter V8 diesel producing 445 hp and 910 lb-ft of torque.

2017 GMC Sierra Denali 2500HD Diesel: ... Sierra HD models (along with their corporate brothers in the Chevy Silverado lineup) gain a new 6.6-liter Duramax turbodiesel V8, ...

In almost 25 years powering General Motors trucks and SUVs, the 6.6-liter Duramax V8 diesel engine has earned a loyal ...

2020 GMC Sierra AT4 2500HD Duramax Fuel Economy Tested . By Sam McEachern. November 4, 2019 2:59 pm . ... I love my 2021 GMC 2500HD SLT Crew LP5 Diesel, stock tires, ...

So with the all-new Sierras (1500 in 2019 and 2500/3500 in 2020), we had high hopes for delivering a third Billet Piston trophy. We weren't shocked when the Sierra 2500HD AT4 came really close to ...

Big jobs require big trucks, and the all-new 2020 GMC Sierra 2500HD and 3500HD rise to the challenge with copious features and massive tow ratings.

Read about this 2005 GMC Sierra 2500HD Duramax buildup with two Garrett turbos, twin CP3 pumps, and a water-methanol injection system, only on dieselpowermag.com, the official website of Diesel ...

2025 GMC 2500 Denali Ultimate Duramax. Photo: CarPro. ... The 2025 GMC Sierra 2500 Denali Ultimate, ... bulging hood is a 6.6-liter Duramax turbo diesel engine that is putting out 470-horses, ...

Random fact: The upgraded Duramax for 2017 boosted the Sierra’s torque by 145 lb-ft, ... Dull Package 2020 GMC Sierra 2500 HD Diesel Towing Review: Powerful Hauler, Dull Package. By Jerry Perez.

The GMC Sierra 2500 Heavy Duty pickup truck gets various updates and changes for the 2017 model year. See more on the 2017 GMC Sierra 2500HD here.

2020 GMC Sierra 2500 HD AT4 | Cars.com photo by Aaron Bragman. This week in pickup truck news on Cars.com sister site PickupTrucks.com: We take a look at which of two new diesel half-ton pickups ...