"2024 GMC Sierra 2500HD AT4X and Extreme AEV Edition: The Ultimate Muscle Trucks"

GMC has unveiled the 2024 Sierra HD AT4X, an off-road specific heavy-duty truck that will be available in the fall. The truck features Multimatic DSSV dampers, upper and lower control arms, steering knuckles, and an e-locking differential at the rear. It will be available with a Duramax 6.6-liter V8 turbodiesel engine that makes 470 horsepower and 975 lb-ft of torque, or a 6.6-liter V8 gas engine that makes 401 hp and 464 lb-ft of torque. The truck can tow up to 18,500 pounds and has a ground clearance of 11.6 inches.