2024 At4 2024 Duramax Forum. Looking at a new 2024 at4 and just curious if the 10 speed transmission helps with mpg. Talk strategies for getting the best deal, used pricing, incentives, dealer reviews, financing, options, and.
I was planning on upgrading to a 2024 at4 duramax. A forum community dedicated to chevy and gmc duramax diesel owners and enthusiasts.