GMC ≫ SierraGMC Sierra AT4 (2019, fourth generation) photosby Joshua ThompsonThe 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. ◄ PrevNext ►Credit: GMC 2019 GMC Sierra AT4 Tags:at4fourth generationgmcsierra