2024 Gmc Sierra Hd At4x. Select a 2024 gmc sierra at4 and at4x hd to view feature and capability specs on the official site. The new gmc sierra hd remains available in 2500 hd and 3500 hd models in regular, extended, and crew cab body styles.
Select a 2024 gmc sierra at4 and at4x hd to view feature and capability specs on the official site. Gmc’s at4x trim expands to the beefy sierra hd, giving the luxury pickup the talent to go just about anywhere in comfort, along with an 18,500 pound tow rating.
