GMC
GMC Yukon AT4 (2021, fifth generation) photos
The 2021 GMC Yukon AT4 is a new trim line with more offroad ability including adaptive air suspension, 2-speed transfer case, and 20″ all terrain tires.
at4
GMC
GMC Canyon AT4 (2021, second generation) photos
The AT4 is a new addition to the 2021 GMC Canyon range with a bigger grille, offroad suspension, 31″ tires with 17″ wheels, and 4WD with rear locking diff.
GMC
GMC Acadia AT4 (2020 facelift, second generation) photos
The 2020 GMC Acadia AT4 is a new offroad trim level with a standard 3.6L V6, AWD and 17″ wheels. The facelift also includes a bolder grille and headlamps.
GMC
GMC Sierra 2500 HD AT4 (2020, fourth generation) photos
The 2020 GMC Sierra 2500 HD AT4 has offroad suspension with Rancho shocks, Eaton locking rear differential, skid plates, and offroad traction control mode.
GMC
GMC Sierra AT4 (2019, fourth generation) photos
The 2019 GMC Sierra AT4 has a 2″ lift kit, 4WD with transfer case, offroad Rancho monotube shocks, 18″ wheels, red recovery hooks, and a 5.3-liter V8.