The history of the Duramax diesel begins in 2001 ... What You Need To Know In one Reddit discussion about the fuel economy of the 2024 GMC Sierra 2500HD Denali Ultimate 6.6 Duramax, commenters ...

For those customers looking to equip the 2025 GMC Yukon with the optional diesel engine, the 2025 model year will likely ...

GM debuted a revised engine, the LLY, mid-way through 2004 for the Chevy Silverado and GMC ... fuel economy. So, LBZ-equipped GM trucks are something of a hot commodity amongst diesel and Duramax ...

GM has finally shoehorned the Duramax ... Express and GMC Savana heavy-duty van offerings. It not only improves power (250 hp/460 lb.-ft) but is estimated to improve gas mileage to 20.2 mpg ...

Fuel economy is another strong suit of the Duramax diesel engine. We finished out the year with an average of 19.1 mpg. If you remove the more than 3,000 miles of towing, that figure jumps to 20.8 ...

GMC has also improved the horsepower and torque ratings of the optional Duramax turbo-diesel inline-six. Output for the diesel now comes in at 305 horsepower and 429 pounds-feet of torque.

Active grille shutters and Teen Driver electronic monitoring features are added to all Sierra, Yukon as well as the Yukon XL. Reports indicate the 2017 model year GMC Savana van will gain the option ...

A two-wheel drive with the enhanced 3.0-Liter Duramax Turbo-Diesel is your ideal choice for optimum fuel efficiency at 24 MPG city / 29 MPG highway. A four-wheel drive with the same Duramax is ...

I own a 2023 GMC Sierra ... with the Duramax 3.0 engine, SLT with the X31 package. Comfortable seats with a commanding view of the road. Rear seat room is impressive. I get nearly 30 MPG on ...

For 2017, the GMC Sierra 2500HD and 3500HD are now offered with a more potent Duramax 6.6-liter turbocharged diesel engine. The upgraded diesel engine paired with the 2017 Sierra HD generates 445 ...