Demco Underbed Rail System Dimensions for a 2016 GMC Sierra 2500

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Question:

I recently purchased a 16 GMC Duramax Denali and the previous owner had a 5th wheel hitch but took it out. The 6.5foot box has holes in it from a puck system?. I want to use those existing holes that are 28inch apart side to side and 11 3/4inch apart from to back. Appreciate any help!

asked by: Thomas L

0

Expert Reply:

Thanks for the picture! Those holes are not from an OEM puck system because the cab to tailgate dimensions are too short. It looks like the previous owner used the Underbed Rail and Installation Kit for Demco UMS 5th Wheel Hitches item # DM8551010. This system worked similar to an OEM puck system but only with Demco hitches. I have linked a dimensional drawing below for you to compare to what is currently on your truck. I have also attached an installation video.

Since your 2016 GMC Sierra 2500 is a shortbed you will need a slider that is compatible with the Demco Rails item # DM8551010. I recommend the Demco Autoslide 5th Wheel Trailer Hitch w/ Slider item # DM8550037. This is an autosliding hitch with a 21,000 lbs capacity.

expert reply by: Jerred H

0

Demco Puck Spacing
(click to enlarge)

16 GMC Duramax Denali
(click to enlarge)

Answer 1

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Answer 2

Hey Tim, I checked with Demco and the bracket kit part #DM8552027 that you referenced is correct for your 2014 Chevy Silverado 1500. Do you already have the rails and the hitch?

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Answer 3

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Answer 4

Hello Rick, thanks for reaching out. We do offer a 3-ball mount that is compatible with the folding tailgate on the new GMC trucks. Take a look at the following: - B&W Tow & Stow 3-Ball Mount - MultiPro - 2" Hitch - 4.5"…

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Answer 5

You will want to tell me your model number so that I can accurately determine any possible solutions. That said, I was able to pull some info from Lippert's popular leveling systems to get you started. It is possible that your battery voltage is…

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Answer 6

Hi Mike; there is no traditional puck system for your 2012 Ram 2500. Even if there was, I would recommend going with B&W since they make such a great setup between the Turnoverball and Companion 5th wheel hitch. If yours is a Diesel without the…

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Answer 7

The factory prep package was not offered on a Ram 2500 or Ram 3500 until 2013 therefore there would be no way to obtain this system on a 2012 no matter which bed you have. However, I can set you up with pucks using the Reese Elite Series and…

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Answer 8

You have a couple options for moving your Demco Autoslide 5th Wheel Trailer Hitch #DM8550035 to your 2023 GMC Sierra 2500 with the factory in bed prep/puck system. First the best way in my opinion is to remove the mounting brackets on the side of…

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Demco Underbed Rail System Dimensions for a 2016 GMC Sierra 2500

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