2024 Gmc Sierra At4x 2024 Review. The sierra 2500hd is a serious rig capable of tugging up to 22,500 pounds with a ball hitch and featuring a maximum payload of 4,178. 2024 gmc sierra 2500 at4x aev.

 — 2024 gmc sierra 2500hd at4x aev vehicle type: Research the ratings, prices, pictures, mpg and more.