Like its Chevrolet-branded sibling, the GMC Sierra AT4X models are based on the brand’s 2500 HD chassis. Customers will have a choice between either a 6.6-liter gasoline or turbo diesel engine.

The GMC Sierra HD AT4X Is Opulent Off-Roading. Wood grain and massaging seats meet lift kits and 35-inch tires on this factory freight train. By Emmet White Published: May 01, 2023 2:33 PM EDT.

The GMC Sierra HD AT4X is an upcoming trim level of the GMC’s full-size, heavy duty pickup truck that will join the Sierra lineup for the 2024 model year.

There's more, of course, with the 2024 GMC Sierra HD AT4X. The off-road enhancements for the heaviest Sierra include a rear locking e-differential, ultra beefy front upper and lower control arms ...

Like other AT4X models in GMC’s pickup lineup, the Sierra HD gets off-road-focused equipment, including a 1.5-inch lift, 35-inch mud-terrain tires, Multimatic DSSV dampers, an electronic locking ...

The new AT4X variant of GMC's 2024 Sierra HD pickup series officially joins the stable this week, giving pickup truck box-checkers yet another off-road trim to . Skip to main content.

GMC Sierra HD Adds Denali Ultimate, AT4X to Follow GMC's MultiPro Tailgate is standard equipment here. The tailgate has an inset that can be used as a step and allows you to get into the bed of ...

We were surprised when GMC told us that the AEV edition has a lower approach angle compared to the AT4X—down from 31.6 to 29.8 degrees—because it looks like the GMC bumper extends much lower.

Configured only as a 2500HD Crew Cab Standard Bed four-wheel drive, the GMC Sierra HD AT4X is powered by the standard 6.6-liter V-8 gasoline engine (401 hp/464 lb-ft of torque) or the venerable 6. ...

2024 GMC Sierra AT4X HD Spied With DSSV Shocks, 35-Inch Tires . By Jonathan Lopez. January 4, 2023 2:11 pm . Facebook Twitter LinkedIn Pinterest Email Print. 5 . Sponsored.

The 2024 GMC Sierra 2500HD AT4X is a new, high-performance off-road version of the heavy-duty pickup designed for extreme use that goes on sale this year.