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 2025, every GMC Yukon is now available with the Duramax diesel 3.0-liter ... we can't say whether the new diesel engine will get better fuel economy, but last year the rear-drive powertrain ...

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 ...

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.

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 ...

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 ...

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 ...