2024 Hd Duramax 2024 Mpg. Improved styling, an upscale interior, and more powerful duramax engine make the. Take a look at what has changed, and the other features and.
Current truck is a 2014 duramax with the 6 speed. โ looking at a new 2024 at4 and just curious if the 10 speed transmission helps with mpg.