Gmc Sierra 2024 Hd At4 2024.  — the 2024 gmc sierra 2500 hd at4x aev edition adds functional style from american expedition vehicles trove of aftermarket accessories in a production. At4 and the first ever at4x.

 — the 2024 gmc sierra 2500 hd at4x aev edition adds functional style from american expedition vehicles trove of aftermarket accessories in a production. Fully loaded with every option available (except the kicker tailgate setup, as i am building my own setup) mods.