The Sierra AT4 has a standard 3.0L Duramax Turbo Diesel engine with Active Thermal Management for a range of environmental conditions, to push out 305 horsepower with 495 lb-ft of torque.

Sierra 1500 represents the seventh model year of the fourth-gen full-size pickup truck. Here's everything new and different ...

a new Elevation trim now serving as the base model (replacing SLE and SLT), and a Duramax turbo-diesel option to go with the ...

When it launched for the 2023 model year, the current generation GMC Canyon AT4 was offered with two All Terrain tire options and one Mud Terrain tire option. Now, the 2025 GMC Canyon has deleted ...

Our 2024 GMC Sierra AT4X AEV Edition test truck featured the optional Duramax 3.0-liter turbodiesel engine with 305 horsepower and 495 lb-ft of torque. Although the Sierra AT4X AEV Edition boasts ...

2020 GMC Sierra AT4 Duramax First Drive: Less Greedy, Still Muscled The 2020 GMC Sierra AT4 Duramax is proof that t... New 2020 Chevrolet Silverado HD First Drive: 35,500 Reasons to Consider it ...

2020 GMC Sierra AT4 Duramax First Drive: Less Greedy, Still Muscled The 2020 GMC Sierra AT4 Duramax is proof that t... New 2020 Chevrolet Silverado HD First Drive: 35,500 Reasons to Consider it ...