2025 Duramax Diesel Specs

2025 Duramax Diesel Specs. 2017+ chevy hd & gmc hd diesel specs, tow ratings, and model year changes. General motors announced a revised, more powerful version of the 6.6l duramax diesel for the updated 2025 model year gmc sierra and chevrolet silverado hd.

(1,234 nm) — to enable easier,. 2017+ chevy hd & gmc hd diesel specs, tow ratings, and model year changes.