2026 GMC Sierra EV AT4: Updated Specs and Features

The introduction of the 2019 Sierra AT4 by GMC was their entry into building factory off-road pickups. At first, AT4 concentrated on well-known changes: tires, suspension, and some red tow hooks combined with a few blacked-out features. It turned out that people loved the treatment, prompting it to be introduced in other cars from the brand very soon. The completely new Sierra EV will be the newcomer in the AT4 series.

Compared to chief competitors such as the Ford F-150 Raptor and the Ram 1500 RHO, the AT4 vehicles are well-behaved, though its AT4X name is almost as hard-charging as the ZR2 from Chevy. GMC believes that AT4 is a new important brand that complements the Denali line in both its gas and EV lines. Consider that AT4 appeals to buyers who are splitting from their families and want to avoid the image of their fathers or grandfathers from owning Denali.

The two GMC Sierra EV AT4 models appear to maintain pricing in line with their predecessors, with the AT4 Extended Range starting at $81,395. All of them are equipped with the standard 205-kWh battery, which is good for an EPA-estimated 390 miles of range in the base model and 478 miles in the range-topping AT4 Max Range, which starts at $91,695. It is no coincidence that the entry-level Extended Range model falls under the $ 80,000 mark, as its destination fee is not factored into the price, given the $ 7,500 federal incentive.

In addition, the AT4 Extended Range costs 9,600 dollars more than the Denali Standard Range (not offered in the AT4 trim) and 1,400 dollars more than the Denali Extended Range.

We must also remember that Chevrolet gives the Silverado EV more capabilities, and the Trail Boss version starting at $72,095 and $88,695 for the two ranges is coming soon. Since they belong to the same family, these twins have features in common, although a range of differences earns the Sierra Max Range an additional $3000 above the Trail Boss.

Going with the AT4 Max Range adds 100 horsepower, but the Extended Range has only 625. Both models have 775 pound-feet of torque, and their 800-volt architecture allows for up to 350-kW charging rate at DC fast-charger stations. For the best results, GMC claims you’ll be able to chug down 100 miles in just 10 minutes of drinking the DC potion.

This AT4 Treatment applies to Sierra EVs.
As standard, the Sierra EV AT4 has 35-inch all-terrain tires, 2.0 more inches of ground clearance, an extra Terrain drive mode, Super Cruise hands-free tech, and four-wheel steering. The changes to the exterior are red tow hooks, a red illuminated GMC badge, a bedliner painted in the color spray, and some bits of blacked-out trim. The inside includes special Forest Storm (gray) upholstery with some important AT4 markings, ventilated seats in the front, heated rear outboard seats, a Bose sound system, and a main infotainment screen sized at 16.8 inches and organized vertically.

All Goes Left; in a Right Way

The Sierra EV AT4 is capable of performing the CrabWalk stunt made famous by the Hummer, although that is icing on the cake. The true hero here is the greatly competent rear-axle steering. By being able to rotate the rear wheels a bit more than seven degrees (depending on the factors such as speed and the driving mode), it virtually reduces the wheelbase of the truck 145.7 inches during low-speed maneuvers.

The responsiveness of the rear steering increases with the degree of turning of the steering wheel although the intensity of the steering remains the same. In Terrain mode, which is only available in the AT4, the rear wheels are engaged sooner, so off-road navigation is even simplified.

The idea of rear-axle steering is not brand new, and it is still one of the outstanding features in practice. On our way through twisting paths behind another vehicle, we happened to witness the AT4 effortlessly maneuver where a multi-point turn would be required in other vehicles.

In spite of the fact that the Trail Boss Max Range and the AT4 Max Range have an equally good level of equipment, the additional details of the AT4 make it worth its cost. Cabin quietness and structure are boosted by such standard equipment as acoustic laminated glass and a fixed roof. The vertically mounted touchscreen is also more upmarket than in the Chevrolet counterpart. Not all the time is the major upgrade that impresses the most.

Even though we faced off-roading in the form of “mud and ruts on our way to the cabin,” it’s obvious that AT4 has a good amount of capability. When the terrain got really mucky, the tank advanced easily on large metal rims like those of a heavy track vehicle.

Springtime Air

AT4 models have no hurdles when driving on the roads. With Super Cruise, GMC offers the top hands-free highway system in its class, has an excellent audio system, and its imitation leather seats are decent.

What passengers seemed to object to most was the rather strong impacts we felt inside the cabin at times, whether we were on a smooth road or not. The research has discovered that the Sierra EV AT4 is equipped with coil springs all around, whereas the Sierra Denali Max Range and Hummer EV apply air springs. Yet besides the previously mentioned drawbacks, Chevy managed to make the drive softer than most of the non-GM competitors. It is surprising that the AT4 EV has a tow rating of 12,300 pounds, although the Denali with its air springs is rated even higher at 12,500 pounds.

2026 GMC Sierra EV AT4 Specification

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Performance (est)

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