The man bought his GMC Canyon AT4 in November, modified it, and sold it at an online auction this week, taking a big loss on ...

The GMC AT4 sub-brand can be found across Big Red's lineup, with the vast majority of models offering an AT4 variant. The ...

When you want to go off-road, uptown-style, GMC supports that ... Both the 2500 and 3500 Sierra Heavy Duty trucks have an AT4 trim. The HDs share many interior features with the Sierra AT4 ...

The 2025 GMC Acadia interior colorways include four options for the entry-level Elevation trim, a single colorway for the rugged AT4, and two for the range-topping Denali. Materials include cloth ...

Adaptive cruise control with trailering assist, previously standard on the 2024 AT4X and Denali Ultimate trim levels, now comes on the AT4 ... the GMC is littered with handy interior cubby storage.

The GMC Sierra 2500HD is closely mechanically related to the Chevrolet Silverado 2500HD but distinguishes itself as a more upscale truck thanks in part to the availability of the chrome-clad ...