What’s 220 pounds to General Motors’ new 6.6-liter Duramax diesel V-8 engine? Not much, based on the minuscule differences between the performances of the 2017 GMC Sierra 2500HD tested here ...

Tested: 2017 GMC Sierra 2500HD Diesel 4x4 Crew 2018 GMC Sierra ... stops along the way to exercise General Motors’ new Duramax diesel engine and the Sierra’s enhanced workday skills.

A Duramax diesel engine is also available ... 2024 GMC Sierra 2500 HD Denali Ultimate and 7.1 seconds in a 2024 GMC Sierra 2500HD AT4X AEV. Equipping the 2025 GMC Sierra 2500HD with its regular ...

If you have a 6.6 Duramax or shopping for one, you know that the fuel economy isn't the best. However, here are three ...

You don't have to worry about any of that with the 2015 GMC Sierra 2500HD Denali with its Duramax diesel engine, however, as its gross vehicle weight comes in at 10,000 pounds, making it a Heavy ...

The Environmental Protection Agency has yet to release its official highway, city and combined fuel economy ratings for the 2020 GMC Sierra 2500HD with the 6.6-liter L5P Duramax diesel V8 engine ...

At first glance, the 2024 GMC Sierra Denali 2500HD Denali Ultimate seems ... A refreshed 6.6-liter Duramax V-8 turbo diesel is standard for Denali Ultimate, but its 470 hp and 975 lb-ft of torque ...

As standard, the Sierra 2500 HD comes with a 6.6-liter gasoline V8, but GMC offers the 6.6-liter Duramax diesel V8 as optional on every trim. The turbo diesel mill delivers 470 horsepower and 975 ...

Patrick "McRat" McSwain has been in the diesel performance industry for many years and is well-known for drag racing his '05 LLY Duramax, nicknamed Casper. If running 10-second quarter- miles is ...

If you like big trucks, or you tow a heavy load, I have one for you this week you'll love: The 2025 GMC Sierra 2500 Denali Ultimate ... bulging hood is a 6.6-liter Duramax turbo diesel engine ...