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GMC Expands Capability of 2024 Sierra 1500 AT4X With 3.0L Duramax Engine

Autosphere » Fleet » GMC Expands Capability of 2024 Sierra 1500 AT4X With 3.0L Duramax Engine
Close-up of 3.0L Duramax Turbo-Diesel engine badge on the 2024 GMC Sierra 1500. Photo GMC

The engine, first introduced to the Sierra stable for the 2023 model year, delivers increased power and torque for world-class on- and off-road capability in the AT4X.

GMC will make the rugged and refined second-generation 3.0L inline-six Turbo-Diesel Duramax engine standard on its extreme off-road Sierra 1500 AT4X trim, allowing customers to go further and explore more in their off-road adventures.

Previously introduced on select 2023 Sierra 1500 trims, the updated 3.0L Duramax engine comes standard with a 10-speed automatic transmission and delivers max power of 305 hp (a 10% increase compared to MY22) and max torque of 495 lb-ft (a 7.6% increase from MY22).

“The 3.0L Duramax Turbo-Diesel engine has long been a favourite 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 Duramax turbo-diesel engine’s advancements are made possible through several key component upgrades, including:

  • 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 Duramax engine will continue to be assembled at GM’s Flint Engine Operations in Michigan and is expected to be available on the 2024 GMC Sierra 1500 AT4X later this summer.

The 2024 model year brings additional new features across the 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 colours, Downpour Metallic and Thunderstorm Gray

Finally, for the 2024 model year, the 2.7L Turbo High-Output Engine will now carry the name TurboMax. With 310 hp, a best-in-class torque rating of 430 lb-ft and max available towing of 9,500 lbs, the TurboMax engine provides GMC Sierra 1500 Elevation, SLE and Pro customers with the power and capability necessary to take their work or hobbies further, whether that’s towing gear or tackling off-road trails.

 

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