OE Spotlight: 3.0L Duramax To Be Found In Sierra 1500 AT4X

If your truck needs allow for a light-duty 1/2-ton truck but you really like a diesel engine, GMC has announced what might be the perfect rig for you. Check out the 2024 Sierra AT4X. It comes with the 3.0L Duramax.

Designed with off-road capability, high-end technology, and an interior that screams comfort, the Sierra 1500 AT4X allows truck owners to venture further off-road with confidence and in comfort. 2024 Sierra AT4X standard features include Multimatic DSSV dampers and front and rear e-locking differentials. When combined with the additional capability of the available AEV edition, you can make this the most off-road capable factory Sierra 1500 ever. All with the luxury-focused and tech-infused AT4X Obsidian Rush interior, which features full grain leather-wrapped massaging front seats, authentic ash wood trim, a 12-speaker Bose Premium Series audio system, and more than 40 diagonal inches of combined digital displays.

3.0L Duramax

2024 GMC Sierra 1500 (LZ0) Engine, Duramax 3.0L Turbo-Diesel

But let’s get back to what’s under the hood, the 3.0L Duramax. The “BabyMax” was first introduced to the Sierra stable for the 2023 model year, the “Babymax” delivers increased power and torque for world-class on- and off-road capability in the AT4X.

The updated 3.0L Duramax engine comes standard with a 10-speed automatic transmission and delivers 305 horsepower (a 10-percent increase compared to 2022 model year engines), and max torque of 495 lb-ft (a 7.6-percent increase from 2022).

“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.”

2024 GMC Sierra 1500 Crew Cab interior with leather-appointed interior seating in Jet Black.

The Duramax Turbo-Diesel engine’s advancements are made possible through several key component upgrades like new steel pistons with a revised combustion bowl, a retuned turbo compressor, and new fuel injectors.

“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 also offers power-retractable side steps, and an active exhaust system is available on some trims. You also have wheel options and two fresh paint colors to choose from (Downpour Metallic and Thunderstorm Gray).

While the 3.0L Duramax might not be the powerhouse its big brother is, it is still a great engine for the average truck owner looking to enjoy the benefits of owning a diesel truck without the need for a heavy-duty chassis.

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Randy Bolig

Randy Bolig has been working on cars and has been involved in the hobby ever since he bought his first car when he was only 14 years old. His passion for performance got him noticed by many locals, and he began helping them modify their vehicles.
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