2025 Chevrolet 2025 Duramax Specs. Detailed specs and features for the 2025 chevrolet silverado 2500hd including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type,. That said, chevy builds most of them with the 6.6.

2017+ chevy hd & gmc hd diesel specs, tow ratings, and model year changes. Duramax’s are easy on oil.