The new 2020 GMC Sierra HD 3500 Denali is killer!! I wanted to walk around it with you and show you my initial thoughts..I just picked this up so bear with me...I haven't figured out all the bells and whistles yet. If there are questions you might have feel free to drop them below in the comments and I'll try to do a follow up video after I have had it for some time and hauled some heavy equipment.

One thing to not right off the bat is how comfortable, quiet, and clean the interior is, as well as how peppy and strong the 6.6 duramax feels with that new 10 speed transmission.

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