2024 Duramax Horsepower.  — according to chevy truck marketing director mike macphee, a majority of silverado hd buyers choose the 6.6l v8 l5p turbodiesel duramax engine over the.  — the environmental protection agency rated the 2024 chevrolet silverado 1500 with the duramax diesel engine between 20 and 26 mpg.

 — other news, the 6.6 gasser gets the big 10 speed for 2024 and some new color and trim options. Chevrolet has made big improvements to the 2024 silverado hd 6.6 duramax turbo diesel.