2024 Gmc At4 2024 Diesel Engine. View detailed specs, features and options for the 2024 gmc sierra 1500 4wd crew cab 147 at4 at u.s. Research the 2024 gmc sierra 1500 diesel with our expert reviews and ratings.
There is a new engine available for the 2024 gmc sierra 1500 at4x and it does not run on gasoline. Initially introduced on select trims, the lzo.