2024 Duramax Diesel. Looking at a new 2024 at4 and just curious if the 10 speed transmission helps with mpg. Chevrolet has made big improvements to the 2024 silverado hd 6.6 duramax turbo diesel.
2024 gmc sierra 2500 and 3500 hd first look: 2024 duramax diesel general motors announced a revised, more powerful version of the 6.6l duramax diesel for the updated 2024 model year gmc sierra and chevrolet silverado hd.