Will Demco Autoslide 5th Wheel Hitch Work With Elite Underbed Gooseneck on 2017 GMC 3500

Question:

RP87FR. 2017 gmc 3500hd with 6.5foot box. If I install this kit will it use the gm factory puck placement or will it be the same as the Ford puck system? Im looking to remove my bandw gooseneck hitch to install the Reese under bed puck system so I can install the demco slider with either the ford or gm puck system side brackets and still retain my gooseneck. Is this possible?

asked by: Ryan P

Expert Reply:

Hey Ryan; thanks for the question and it is indeed possible, you'll just need a different Elite gooseneck part number than the one you referenced. You'll need the Elite gooseneck that fits your 2017 GMC Sierra 3500, and the Demco Autoslide that fits the Ford puck system. So here is exactly what you'll need:

- Elite Series Underbed Gooseneck # RP30158-68

- Demco Autoslide 5th Wheel Hitch w/ Slider - Ford Super Duty Prep Package - 18k # DM8550024 or 21K # DM8550038

It's kind of goofy and I'm not sure why they did it this way but the Elite Series goosenecks use the same spacing as only the Ford pucksy, which is why you need the Autoslide for Fords instead of GMs.

expert reply by: Kyle S

Ryan

3/6/2024

Is there anyway to bolt rails in with my b and w gooseneck I currently have?

Kyle S.

3/6/2024

@Ryan No, I'm sorry there is not a way to do that.

Ryan

3/6/2024

@KyleS do you know why they say you can't use the demco b&w gooseneck to rails adapter with the demco auto slider? Is it due to rotating force on the pin?. Could someone just secure the back of the autoslide to the box if that were the case?

Kyle S.

3/6/2024

@Ryan Way too much force, yeah. And I definitely don't recommend securing the back of the autoside to the box. There's honestly no telling what may happen.