Gmc 2024 Sierra 2024 At4 Specs. Select a 2024 gmc sierra at4 and at4x hd to view feature and capability specs on the official site. 2024 gmc sierra 2024 duramax specs.
View local inventory and get a quote from a dealer in your area. Gmc’s star student is the sierra 1500, a truck with enough guts to tow up to 13,300 pounds that’s also one of the 10 bestselling vehicles in the u.s.