2024 Duramax Diesel Hp. Take a look at what has. 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.

The truck’s l5p duramax diesel engine received a substantial bump in power and torque thanks to a stout list of upgrades, including a new turbocharger,. Max power is 305 horsepower, a 10 percent increase over the.