mobile-menu-icon
GM Authority

GMC AT4

AT4 is a GMC sub-brand of off-road-oriented vehicles with applications for the entire GMC lineup – except for the Savana – including the Sierra 1500, Sierra HD, Canyon, Yukon, Acadia, and Terrain nameplates.

AT4 was created as a unique persona that offers credible capability while still providing premium everyday comforts. AT4 variants distinctively combine off-road capability, innovative technology and bold design, along with GMC’s premium refinement to practically complement an authentic outdoor lifestyle. Core AT4 design includes premium rugged exterior details, featuring black chrome grille, fog light surrounds and rear appliques, as well as unique authentic aluminum interior decor and premium fabric colors.

Notably, 2019 Sierra 1500 launched the AT4 sub-brand, and replaces the All Terrain for models that offered such a trim level, which include the Acadia. Sierra 1500, and Canyon.

Models

The AT4 name is used on the following GMC models:

Sierra 1500 AT4

In 2019, the re-engineered and redesigned Sierra 1500 model introduced the AT4 moniker to the pickup truck model line. The new variant delivered a unique formula of authentic off-road capability paired with premium refinement and the bold appearance that GMC has come to be known for. The model is essentially GMC’s version of the 2019 Silverado Trailboss, but with more premium features and equipment.

Notably, the standard powertrain for the 2019 Sierra 1500 AT4 was and remains the 5.3L V8 L84 engine, though the 6.2L V8 L87 and 3.0L LM2 I6 turbo-diesel Duramax engines were also available. Other available content included a segment-first Multi-Color Head-Up Display as well as a segment-first Rear Camera Mirror and a GMC exclusive, industry-first Carbon Fiber Pickup Box.

GMC Sierra 1500 AT4 Quick Facts
Model Year(s) 2019 – Present
Engine(s) 4.8L V8, 5.3L V8, 6.2L L87 V8, 3.0L LM2 I6 Duramax
Transmission(s) 6-Speed Auto, 8-Speed Auto, 10-Speed Auto
Drive Wheels Four-Wheel-Drive
Availability U.S.A., Canada, Mexico, Middle East
[nggallery id=962]

In 2020 and 2021 the Sierra 1500 AT4 saw minor changes and updates.

Sierra HD AT4

The GMC Sierra HD AT4 debuted for the 2020 model year, when the fourth-generation heavy-duty pickup truck lineup entered the market. Like all AT4 models, Sierra HD AT4 features were highlighted by off-road components, and included:

  • Off-road suspension, Rancho Shocks, skid plates, Eaton locking rear differential
  • Eighteen-inch wheels wrapped with Michelin all-terrain tires
    • 20-inch wheels available
  • Traction Select System with specific Off-Road mode
  • Hill Descent Control and Hill Start Assist
  • Segment-exclusive 15-inch diagonal Head-Up Display with Off-Road Inclinometer
  • HD Surround Vision for low-speed views of vehicle surroundings
GMC Sierra HD AT4 Quick Facts
Model Year(s) 2020 – Present
Engine(s) 6.6L L8T V8, 6.6L L5P V8 Duramax
Transmission(s) 6-Speed Auto, Allison 10-Speed Auto
Drive Wheels Four-Wheel-Drive
Availability U.S.A., Canada, Mexico, Middle East
[nggallery id=1115]

For the 2021 and 2022 model years the Sierra HD AT4 saw minor changes and updates.

Canyon AT4

The GMC Canyon AT4 mid-size pickup entered the market for the 2021 model year, at which time the nameplate underwent a refresh of sorts, receiving a new front fascia and other notable changes, including the AT4 trim level which replaced the All Terrain trim level.

GM Authority was the first to report that the 2021 GMC Canyon AT4 would offer a new special edition model, which has since been revealed as the new Off-Road Performance Edition, offering even more rugged capability to the already capable Canyon AT4 to provide customers with the confidence to “venture into rugged off-road environments, all while maintaining the premium comforts they have come to expect from GMC.”

One notable improvement that the Off-Road Performance Edition has over the regular Canyon AT4 is a factory-installed front suspension leveling kit that raises the front of the pickup truck by 1 inch for additional ground clearance. And because the front air dam has been removed, the kit gives you a 29.5-degree front approach angle, a 35.8 percent increase. This will help when climbing up obstacles.

GMC Canyon AT4 Quick Facts
Model Year(s) 2021 – Present
Engine(s) 3.6L LGZ V6, 2.8L LWN I4 Duramax
Transmission(s) 8-Speed Auto
Drive Wheels Four-Wheel-Drive
Availability U.S.A., Canada, Mexico, Middle East
[nggallery id=1142]

Yukon AT4

The GMC Yukon AT4 full-size crossover entered the market for the 2021 model year, when the -generation nameplate entered the market. The Yukon AT4 is squarely focused on “rugged adventure,” and provides premium off-road inspired design cues to match its strong capability.

The first-ever Yukon AT4 features a unique front fascia that both visually carries the rugged all-terrain look and supports off-road capability. Coupled with the available four-corner Air Ride Adaptive Suspension, the AT4 can raise and offer an additional 2 inches (50 mm) of ground clearance. When at this maximum height, the Yukon AT4 offers a nearly 32-degree approach angle for added off-road capability.

Following the AT4 color scheme, the AT4 features dark accents throughout, as well as a pair of red recovery hooks.

GMC Yukon AT4 Quick Facts
Model Year(s) 2021 – Present
Engine(s) 5.3L L84 V8
Transmission(s) 10-Speed Auto
Drive Wheels Four-Wheel-Drive
Availability U.S.A., Canada, Mexico, Middle East
[nggallery id=1111]

Acadia AT4

The GMC Acadia AT4 crossover entered the market for the 2020 model year, featuring bold styling cues, including a black chrome-accented grille, add a rugged, off-road-inspired design to the Acadia range. The tried-and-true 3.6L LGX V6 engine – producing 310 horsepower and 271 pound-feet of torque – is paired with a twin clutch AWD system, both of which are standard on the Acadia AT4. Unique 17-inch wheels and all-terrain tires are also standard, with 20-inch wheels available.

GMC Acadia AT4 Quick Facts
Model Year(s) 2020 – Present
Engine(s) 3.6L LGX V6
Transmission(s) 9-Speed Auto
Drive Wheels All-Wheel-Drive
Availability U.S.A., Canada, Mexico, Middle East

Terrain AT4

The GMC Terrain AT4 crossover entered the market for the 2022 model year, making it the newest AT4 model and completing the sub-brand’s expansion across the entire GMC lineup. Set to arrive in the late summer of 2021, the off-road-oriented model will feature a rugged exterior, confident capability and advanced technology.

As GM Authority reported, the Terrain AT4 will be offered exclusively with all-wheel-drive, just like its larger sibling, the Acadia AT4. Other features include a unique front fascia, gloss black-painted wheels wrapped in off-road-capable tires, a steel protective front skid plate, and AT4 exterior badging.

GMC Terrain AT4 Quick Facts
Model Year(s) 2022 – Present
Engine(s) 1.5L LYX I4 Turbo
Transmission(s) 9-Speed Auto
Drive Wheels All-Wheel-Drive
Availability U.S.A., Canada, Mexico

AT4 Color Scheme

While the exterior color options for AT4 branded models are typically restricted and do not include every hue available from a model’s given palette, the interior color combination appears to be limited to just one: Jet Black with Kalahari accenting. Red recovery hooks are also common across all AT4 models with exception to the two crossover models, i.e. the Acadia and Terrain.

Discussion

Discuss GMC AT4 models in our GMC forum.

Subscribe to GM Authority

For around-the-clock GM news coverage

We'll send you one email per day with the latest GM news. It's totally free.