If you’re considering a Chevy or GMC heavy-duty truck with a Duramax diesel, you’ve probably heard impressive claims about ...

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 ...

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 ...

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 ...

One Sunday in late March, Guynes stopped at a QuikTrip to fill the tank of his GMC 2500HD Duramax with 35 gallons of diesel. However, 22 miles later Guynes realize there was a problem. So he had ...

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 ...

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 ...

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 ...