Sierra 2500 represents the sixth model year of the fourth-gen GMC Sierra HD. Here's everything that's new and different about ...

We're taking a closer look at this pre-refresh Chevy Silverado Trail Boss LT and refreshed GMC Sierra AT4 in the following GM Authority Photo Comparison.

An expanded 2026 GMC Sierra EV lineup is expected to arrive this summer. New this year, Elevation and AT4 variants. They join ...

All Sierra EV AT4s will have standard four-wheel steering with the ... and an illuminated front GMC badge. The $91,695 Max Range AT4 produces a maximum of 725 horsepower, while $81,395 Extended ...

The “AT4” designation is GMC’s off-road trim, and the Sierra EV version gets a lifted ... standard four-wheel steer (featuring CrabWalk); standard Super Cruise hands-free driver-assistance ...

This trim comes standard with a coil-spring independent suspension and 18-inch wheels fitted with ... The next new trim for the 2026 Sierra EV is the AT4 and brings GMC's off-road treatment ...

The GMC Sierra EV has been a pretty expensive ... skid plates, and four-wheel steering as standard. The AT4 will also boast a unique "Forest Storm" interior, which features some handsome detail ...

GMC Sierra 1500 AT4 Crew Cab model features a Summit White exterior as well as SCA Performance’s famous Black Widow package ...

GMC has finally revealed the Elevation and AT4 grades ... version of the Sierra EV is listed with 2 inches (50 millimeters) of extra ground clearance over the Elevation. Four-wheel steering ...

The Chevrolet Silverado EV, GMC Sierra EV and Hummer EV have sold ... of ground clearance at just over 10-inches. The AT4 also gets the 4-wheel-steering with crab walk as standard along with ...

The basics stay mostly the same, though, and features like Super Cruise, 18-inch wheels, and onboard power ... even the aggressive GMC Sierra EV AT4 undercuts the infamous Tesla Cybertruck.