The GMC Sierra HD AT4X Is Opulent Off-Roading

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• GMC is adding two off-road specific trim levels to its 2024 Sierra 2500HD pickup truck lineup, with deliveries slated for this fall.

• Known as the Sierra 2500HD AT4X (above) and the accompanying AT4X AEV Edition, GMC is adding a factory lift kit, Multimatic DSSV dampers, and model-specific steering components to boost off-road performance.

• New connectivity is also present in this luxury truck, with a 13.4-inch infotainment touchscreen in the full-leather and wood-grain trim interior.

If Range Rover can pull it off, so can GMC. We're referring to the blend of off-road capability and luxury amenities, a concept the folks at Jaguar Land Rover and full-size pickup truck manufacturers have leveraged for decades. Now, it's GMC's turn to provide customers with a rock-crawling, butt-massaging model, as the company launches the 2024 Sierra 2500HD AT4X.

Sharing the platform with the Chevrolet Silverado, the GMC Sierra is General Motors' full-size pickup with a luxury twist. But the GMC Sierra 2500HD AT4X adds a specific set of off-road chops, with an even more hardcore AEV Edition joining the lineup as well.

Specifically, all AT4X models will feature a factory-installed 1.5-inch suspension lift, Multimatic DSSV dampers, and a rear e-locking differential—all in the name of increased suspension travel and loose surface traction. Goodyear is supplying the rubber, with 35-inch Territory tires equipped as standard on every model, while GMC has also installed model-specific front upper and lower control arms as well as steering knuckles to increase maneuverability and durability.

To keep all these new pieces protected, the company adds a steel transfer case skid plate and front aluminum skid plate. A new off-road package with throttle progression modes and antilock adjustability is also standard equipment.