2024 Gmc Sierra 2024 Hd At4x Aev. (photo/gmc) and for those wishing to take it further, gmc once again teamed up with american expedition vehicles (aev) to offer an upgrade package to the at4x trim.  — meanwhile, the lowest payload capacity is 2,701 pounds for the 2024 gmc sierra 2500 hd in its at4x aev edition variant, with the crew cab standard bed setup, a 4wd drivetrain, and motivation.

 — 2024 gmc sierra hd at4x aev; Search from 176 new gmc sierra 2500 cars for sale ranging in price from $79,340 to.