GMC Sierra AT4 vs. GMC Sierra AT4X: What’s the Difference?
Up until 2022, the AT4 was the GMC Sierra 1500 lineup’s unquestioned off-roading master. But now, GMC has introduced the AT4X trim, which builds on the AT4 while offering an even higher level of all-terrain capability. Here’s a look at what these two GMC Sierra truck models share in common and how they differ.
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The AT4 and AT4X both come well-equipped with off-road equipment. Each trim provides standard four-wheel drive, Hill Descent Control, a two-speed Autotrac transfer case with selectable drive modes, and an off-road suspension with a 2-inch factory lift. And each one is equipped with skid plates, recovery hooks, 18-inch aluminum wheels, and Goodyear Wrangler DuraTrac Mud-Terrain tires.
However, the AT4X sets itself apart with several unique features. The truck’s off-road suspension adds Multimatic DSSV spool-valve dampers and unique springs for improved handling and a more comfortable ride on rough ground. The transfer case’s selectable drive modes add a Terrain Mode setting for one-pedal rock crawling. And while the AT4 has an automatic locking rear differential, the AT4X has driver-selectable front and rear differentials that lock electronically for even more off-road control.
Interior and exterior features
Most exterior features are similar for the AT4 and AT4X. Both come equipped with the six-function MultiPro Tailgate, a spray-on bedliner, and LED lamps. And both models have unique badging for their trim level.
On the inside, the AT4 shows off a Jet Black color scheme with Kalahari accents and perforated leather upholstery. The AT4X gets an Obsidian Rush interior with full-grain leather upholstery, white piping and red stitching, and Vanta ash wood accents. Both models have heated, ventilated, and power-adjustable front seats, and the AT4X adds a massage function as well.
The AT4 and AT4X share features like a 13.4-inch touch screen, a 12.3-inch driver display, wireless charging, and the GMC Pro Safety package of driver-assistance technologies. However, several systems that are available for the AT4 are included as standard on the AT4X. These include a Rear Camera Mirror, a 15-inch Head-Up Display, and an HD Surround Vision camera system. The AT4X also comes with a 12-speaker Bose premium sound system, while the AT4 has a seven-speaker version.
The AT4 comes standard with a 3.0-liter Duramax turbo-diesel engine that achieves 277 horsepower and 460 lb-ft of torque. A 6.2-liter V8 that makes 420 horsepower and 460 lb-ft of torque is available as well. This V8 is the only engine offered for the AT4X. Also, both trims come with a 10-speed automatic transmission.
As you might suspect, the AT4 has a significantly lower price tag than the AT4X. Right now, the AT4 starts at $64,595, while the AT4X will cost you at least $78,295.
The AT4 and AT4X are both part of a GMC Sierra lineup that’s been significantly refreshed and upgraded for the 2022 model year. They’re both available to order or test-drive at dealerships around the country.
A longtime editor/writer and recently transplanted Hoosier, Caleb Cook lives in Xenia, Ohio. His favorite activities are reading and listening to music, although he occasionally emerges from the heap of books and vinyl records in his basement to stand blinking in the sunlight. Once fully acclimated to the outside world again, he can be observed hanging out with his wife, attempting a new recipe in the kitchen, attending movies, walking the dog, or wandering into a local brewery to inquire about what’s on tap. See more articles by Caleb.