Massive Work Horse – The 2021 GMC Sierra HD 2500 Denali Duramax

I’m always excited when I get a nice truck to review for the week and the Denali Sierra 2500 from GMC is one nice truck! Not only was this the Denali trim, we also had the 6.6-liter Duramax Turbo-Diesel V8 engine under the hood pushing 455-horsepower and a massive 910-lb. ft. of torque. There’s a lot to like about this big truck and few gripes I have so be sure to check out the full video.

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