2017 Sierra Denali 2500HD Duramax Diesel - First Look!
2017 GMC Sierra Denali 2500HD Duramax Diesel - First Look! The long awaited arrival of the new 6.6L Duramax Diesel is finally over! Feast your eyes on this stunning loaded Sierra HD Denali. With 445hp and 910tq this truck is an absolute powerhouse and can tackle anything you throw at it. Be sure to like and subscribe because we have some amazing truck video's on the way including the 2017 Sierra SLT Duramax where we'll go in depth on the new 6.6L engine! Check out our 2017 2500HD SLT Duramax video here -