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 ...

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 ...

The 2024 GMC Sierra 2500HD has done just that by pumping the power of its 6.6-liter Duramax turbo-diesel up to 470 horsepower and 975 lb-ft of torque, which gives its Crew Cab configuration a best ...

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 ...

more efficient 6.6-liter Duramax diesel engine with urea injection improves power output and emissions compliance. GMC also debuts a new Denali trim for the Sierra 2500 HD, adding a premium touch ...

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 ...

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 ...