The 2024 GMC Sierra AT4X is getting an upgraded powerplant for the new model year. Where it once solely featured GM’s 6.2-liter V8 truck engine, it’s now set to offer Duramax diesel power as standard.

When the off-road focused Sierra AT4X debuted, it was equipped with just a single engine option: GMC's premier 420-hp, 6.2-liter V-8. However, since the introduction of the rugged AT4 trim in 2019 ...

Since its introduction in 2022, the off-road-focused GMC Sierra 1500 AT4X has exclusively employed GM’s familiar 6.2-liter gasoline V-8. The AT4X model is now getting a welcomed powertrain addition ...

In a similar fashion to the Silverado 1500 ZR2 for the 2024 model year, the Sierra 1500 AT4X is getting a diesel engine in the form of the 3.0-liter Duramax. Optional in the ZR2, the inline-six turbo ...

Chevrolet and Ram each developed a 3.0-liter diesel. While similar in many ways, the engines differ significantly in terms of both design and performance ...

The Duramax name is not a new one, having first arrived on the scene back in January 2001. This wasn't a 3.0-liter inline-six; the Duramax was a 6.6-liter V8 diesel turbo engine designed to power GM's ...

Let's talk powertrains. With the 6.2-Liter V-8 gas engine, the 2023 Denali offers a maximum of 420 horsepower with 495 pound-feet of torque. Also, as an option, the 5.3-Liter EcoTec3 develops 355 ...

General Motors, the owner of GMC, has made all sorts of impressive powertrains over the years. Muscle cars with V8s are sprinkled all throughout its history, as are powerful pickup trucks, sporty ...