2024 Gmc At4 Sierra Specs. The 2024 gmc sierra 1500 is available in pro, sle, elevation, slt, at4, at4x, denali, and denali ultimate trims. The 2023 gmc sierra 1500 4wd crew cab standard box at4 comes equipped with a gasoline powered engine that.

View detailed specs, features and options for the 2024 gmc sierra 1500 4wd crew cab 147 at4 at u.s. Choose from either a gmc sierra 2500 hd or 3500 hd at4, and learn more about the vehicle specs, trims, and features available.