2024 At4x 2024au
2024 At4x 2024au. This will be replacing my 2016 sierra with all terrain x package. I am no expert at any of this, just passionate about modifying my vehicles to my liking. The hierarchy of gmc 4x4s basically goes at4 → at4x → at4x aev. This will be replacing my 2016 sierra with all terrain…