That started to change a few years ago with the introduction of GMC’s AT4 subbrand, which added off-road tires and trim to models like the Terrain but little else in terms of functional upgrades. The ...

The 2026 Sierra EV AT4 gets more clearance, bigger tires, and Terrain mode. So, is it enough for it to tackle old man winter?

GM Authority is taking a closer look at the Chevy Silverado ZR2 and GMC Sierra AT4, comparing the off-roaders' exterior ...

OVRLANDX takes that to the next level, borrowing (and building upon) cues from the even-more-rugged ZR2 Bison, including rocker panel guards, cast-iron control arms, a custom front bumper with an ...

The luxury GMC Denali EV returns for 2026 after its 2024 debut. It is now joined by the lower-cost Elevation and the off-road AT4 trims. Details here.

We've produced plenty of informative reports that detail truck trim levels. Some trims are specific to street rigs, others identify dedicated off-roaders, and there are trim levels that fall between ...

The fully refreshed 2022 GMC Sierra 1500 once again offers the AT4 off-roading trim level, as well as a long list of updates and changes over the preceding 2021 model year and pre-refresh 2022 GMC ...

The 2020 GMC Sierra heavy-duty pickup is an impressive piece of machinery: Depending on how you configure the truck, it can tow up to 35,500 pounds. Our recent Sierra 2500 tester had a slightly ...

The 2021 GMC Canyon AT4 is the Canyon for people who like to drive their Canyons in canyons. The new model replaces the All Terrain in the lineup as the most off-road capable Canyon and brings a ...

For this model year, GMC added the AT4 package to the midsized Canyon pickup truck, bringing that truck into line with the GMC lineup of trucks and SUVs. We drove both pickups in this package and ...

Throughout the course of a year, we took our 2021 Four Wheeler of the Year award-winning 2021 GMC Yukon AT4 and ran it through the proverbial wringer. We covered more than 23,000 miles across five ...