The AT4 will be the highest-riding Sierra, with 2 inches of additional lift thanks to lifted coil suspension and new 35-inch tires. AT4 models will also share a number of features with GMC’s Hummer EV, such as four-wheel steer, CrabWalk, and Terrain Mode. But the automaker stressed that the two EVs don’t actually share any physical components.

GM is expanding the all-electric GMC Sierra EV lineup with the launch of the new entry-level 2026 GMC Sierra EV Elevation and 2026 GMC Sierra EV AT4 off-roader.

The GMC Sierra EV lineup is expanding for the third time in as many model years. For 2026, the electric pickup expands from just one trim to three. The introduction of an AT4 will give the Sierra EV some off-road chops, while the new Elevation model will slash the Sierra EV’s base price by nearly $28,000.