Probably the most excessive model of the Sierra 1500, the off-road-capable AT4X trim, will now be supplied with a fuel-sipping 3.0-liter Duramax diesel engine. The torquey unit will come as normal on the 2024 mannequin yr model of the truck.

The engine in query is the second-generation 3.0-liter Duramax, which in 2023 is barely supplied on choose Sierra 1500 trim ranges. The up to date, second-generation diesel engine delivers extra energy and torque on account of a wide range of refined enhancements.

Due to new metal pistons with a revised combustion bowl, a retuned turbo compressor, new gas injectors, and improved temperature management options, the engine now makes 305 hp (227 kW/309 PS) and 495 lb-ft (671 Nm) of torque. That’s 10 and 7 % extra, respectively, than the first-generation engine may handle.

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“These refinements of the three.0L Duramax Turbo-Diesel engine took an already superior engine and made it even higher for off-road purposes,” mentioned John Barta, GM assistant chief engineer for diesel engines. “The excellent low-end torque mixed with the sleek and quiet energy of this diesel engine, make it superb for purchasers requiring on-road functionality for issues like towing, in addition to off-road adventures like long-distance overlanding.”

The three.0-liter Duramax will proceed to be constructed at GM’s Flint Engine Operation in Michigan and can begin being obtainable later this summer season. Though the engine would be the normal possibility for the 2024 GMC Sierra 1500 AT4X, the gas-powered 6.2-liter V8 engine (beforehand the mannequin’s solely engine), will proceed to be supplied as an non-compulsory additional.

“The three.0L Duramax Turbo-Diesel engine has lengthy been a favourite of Sierra mild obligation homeowners,” mentioned Will Mellon, advertising and marketing supervisor for the GMC Sierra. “For the reason that launch of the refined Duramax for the 2023 mannequin yr, round 20% of all Sierra 1500s offered have include the engine and we anticipate its addition to the AT4X trim to take combine even larger.”

The off-road-ready Sierra 1500 AT4X will proceed to be supplied as normal with Multimatic DSSV dampers, entrance and rear e-locking differentials, and extra. Up to date pricing data for the 2024 mannequin yr is just not but obtainable.

Elsewhere within the lineup, the two.7-liter inline-four engine will likely be renamed the TurboMax engine in 2024. It makes 310 hp (231 kW/314 PS) and 430 lb-ft (583 Nm) of torque and might tow as much as 9,500 lbs (4,309 kg). It will likely be supplied on the GMC Sierra 1500 Elevation, SLE, and Professional trims.