2024 Duramax Horsepower. Other news, the 6.6 gasser gets the big 10 speed for 2024 and some new color and trim options. The new l5p is the most capable duramax thus far offering 445 horsepower @2,800 rpm and.

Use this chart to identify the factory output ratings for your duramax. This diesel performance module is designed for fuel economy with up to 45 horsepower increase in hp and fuel savings up to 10%.