The 3.0L Duramax Turbo-Diesel I-6 engine has been named to the 2020 Wards 10 Best Engines & Propulsion Systems list, receiving high praise for its best-in-class diesel horsepower†, as well as its efficiency and smooth driving experience. This engine, available on the 2020 GMC Sierra 1500, was one of three diesel powertrains in consideration. Entries are judged by
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