2024 Gmc At4x Hd. Here's a list of official specs for the 2024 gmc sierra hd at4x & at4x aev edition. It's the first time an at4x model is available on sierra hd trucks.

Here’s a list of official specs for the 2024 gmc sierra hd at4x & at4x aev edition. Meet the 2024 gmc sierra 2500hd at4x and sierra 2500hd at4x aev.