GM may be finally building the 2027 GMC Sierra AT4 that owners actually wanted from day one, and Ford and Ram may have had a ...

When you want to go off-road, uptown-style, GMC supports that vision with a rugged line of trucks and SUVs packaged under the AT4 label, or All-Terrain 4WD. These mighty vehicles are off-road capable, ...

The GMC Canyon AT4 is often seen as a counterpart to its sibling, the Colorado ZR2, though lacks some of the fancier bits and pieces that make the Colorado such an off-road weapon. However, GMC may ...

At TopSpeed, William Clavey is Editor-at-Large, where he focuses on authority and exclusive content, reviews, news articles, features, and opinion pieces all while sharing his passion for everything ...

The AT4 trim level is new for 2026, and it’s aimed at buyers who want more clearance and toughness than the standard trim. It’s also a step above the Silverado EV in terms of standard features and ...