A Rugged Off-Road Trim: 2024 GMC Sierra 2500HD AT4X

GMC has just unveiled the highly-anticipated 2024 Sierra 2500HD AT4X, the first-ever rugged off-road trim for the Sierra HD. But that's not all - there's also a special AT4X AEV Edition that takes things up a notch with additional features.

Heavy-duty off-roading at GMC just got a whole lot tougher with the new Sierra 2500HD AT4X trim, and it doesn't stop there. The automaker also offers a special AEV Edition package that adds more steel, badges, and a sterner appearance for those who crave even more off-road capability.

What makes the GMC Sierra HD AT4X special?

The beefy AT4X is not just another appearance package with badges and wheels. Instead, it sits 1.5 inches higher thanks to a suspension lift and is equipped with Multimatic DSSV dampers. It rides on 35-inch all-terrain tires and features a new e-locking differential for the rear axle, as well as upgraded steering knuckles connected to new upper and lower control arms installed at the front. The transfer case is also protected with a larger steel skid plate, while an aluminum skid plate is installed at the front.

What else can you expect?

To help all the upgraded components tackle tough terrain, the Sierra HD AT4X now comes with a new Off-Road mode. While GMC is ambiguous with details about the programming of the system, it's stated to tweak everything from the anti-lock brakes, stability and traction controls, throttle response, and shifting of the standard 10-speed Allison automatic transmission. The truck can still tow up to 18,500 pounds and is offered with either the 6.6-liter gasoline engine or the turbocharged 6.6-liter Duramax diesel, which makes 470 horsepower and 975 pound-feet of torque.

What is the AEV Edition?

For those wanting a bit more aggression in their off-roading Sierra HD, there's the AEV Edition that is primarily an appearance package. Along with special badging, it adds trim-specific 18-inch wheels and new steel bumpers with a built-in winch and tow hooks. Heavy-duty steel skid plates offer even more protection underneath. Whether you choose AT4X or AEV Edition, all trucks feature the special Obsidian Rush interior decked out with leather, massaging seats, and luxury features to make sure your hardcore adventure is softened at least a little bit.

When can you get one?

GMC announced the Sierra HD AT4X back in October, but this is our first detailed look at the truck. Pricing still isn't available yet, however. Expect it to be announced closer to its on-sale date in the fall of 2023.

Source: GMC