3.0-Liter Duramax Turbo-Diesel to be Standard on 2024 Sierra 1500 AT4X

Ewing Buick GMC announces that the off-road-focused 2024 Sierra 1500 AT4X will have the rugged yet refined second-generation 3.0-liter inline-6 Duramax Turbo-Diesel as its standard engine. The Duramax produces 305 horsepower, with maximum torque of 495 lb-ft. and will be connected to a 10-speed automatic transmission. 

“The 3.0L Duramax Turbo-Diesel engine has long been a favorite of Sierra light-duty owners,” said Will Mellon, marketing manager, GMC Sierra. “Since the launch of the refined Duramax for the 2023 model year, around 20% of all Sierra 1500s sold have come with the engine, and we expect its addition to the AT4X trim to take mix even higher.”

The 2024 GMC Sierra 1500 AT4X with the standard Duramax will arrive at Ewing Buick GMC later this summer. Mechanical upgrades for this second-generation Duramax engine include:

• New steel pistons with a revised combustion bowl
• Retuned turbo compressor
• New fuel injectors
• Improved temperature control features

“These refinements of the 3.0L Duramax Turbo-Diesel engine took an already awesome engine and made it even better for off-road applications,” said John Barta, GM assistant chief engineer, Diesel Engines. “The outstanding low-end torque combined with the smooth and quiet power of this diesel engine, make it ideal for customers requiring on-road capability for things like towing, as well as off-road adventures like long-distance overlanding.”

The Sierra 1500 AT4X is the most off-road-capable model in the 1500 model line with features such as Multimatic DSSV dampers and front and rear e-locking differentials. It is only topped by the American Expedition Vehicles (AEV) Edition of the AT4X. The AEV enhancements include:

•  An improved 32.5-degree front approach angle, a raised ground clearance to 11.2 inches, 23-degree departure, and breakover angles
• AEV stamped steel powder-coated and e-coated front and rear bumpers. featuring heavy-duty cast recovery points and front winch capability
• Hot-stamped Boron steel skid plates protect the front approach, steering gear, transfer case, fuel tank, and rear differential. These are more than 3.5 times stronger than equivalent cold-stamped steel skid plates
• Bolt-on step assist Rocker Panel Protection
• AEV race-inspired 12-spoke Salta Wheels with AEV’s signature recessed valve stems. With 33″ Goodyear Wrangler Territory MT Tires. Including full-size spare AEV wheel and tire.

There are other changes coming to the 2024 Sierra 1500 lineup including:

• New power-retractable assist steps on Denali, Denali Ultimate, AT4, and AT4X
• Available active exhaust for Denali, Denali Ultimate, AT4, AT4X, and SLT
• Two additional premium aluminum wheels
• Two new unique and bold exterior paint colors, Downpour Metallic and Thunderstorm Gray2
• The highest-powered of the three available 2.7-liter turbocharged engines will now carry the name TurboMax. It will continue to produce 310 horsepower and its best-in-class 430 lb-ft of torque. 

GMC never continues to improve and enhance its model lineup every year. Come visit Ewing Buick GMC to learn more about the exciting Sierra 1500 lineup or take a look at the all-new, redesigned, and more capable than-ever Canyon mid-size pickup.