2025 Duramax Diesel Hp. Max power is 305 horsepower, a 10 percent increase over the 277 horsepower in the lm2. 2025 chevrolet silverado hd 6.6 duramax diesel updated:

The new specifications on the 2025 chevrolet silverado hd include a bump of 25 horsepower up to a total of 470 hp at 2,800 rpm. Trailering package and vertical trailering mirrors;