Off-road enthusiasts looking for even greater capability from their heavy-duty trucks can now equip their 2024-and-later Chevy Silverado HD ZR2 Bison or GMC Sierra HD AT4X AEV Edition with massive ...

GMC is adding two off-road specific trim levels to its 2024 Sierra 2500HD pickup truck lineup, with deliveries slated for this fall. Known as the Sierra 2500HD AT4X (above) and the accompanying AT4X ...

GMC’s off-road-focused AT4X lineup comes in three sizes: the heavy-duty Sierra HD is the largest, the mid-size Canyon is the smallest, and smack in the middle is the full-size, light-duty Sierra 1500.

With much of the truck’s underpinnings shared with both the Hummer EV and Silverado EV, the Sierra’s design does a lot of work differentiating it from those trucks. While the exterior of the truck is ...