2024 At4 Denali. In addition, the sierra hd at4x trim will arrive later on in the model year. — 2022 gmc yukon at4 vs.
— the 2024 gmc sierra hd trim lineup, from bottom to top, consists of pro, sle, slt, at4, denali and denali ultimate. — 2022 gmc yukon at4 vs.
