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Will Demco Autoslide Work With Locked Out Lippert Turning Point On Grand Design  

Updated 08/03/2026 | Published 07/21/2026

Question:

I have a Demco 13k autoslide. We are buying a grand design 5th wheel with a turning point pin box. As long as it is in the fixed position pin box wont rotate am I good to hitch up and go? That is my understanding at this time. Or do I need something else? Just want to be sure.

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Expert Reply:

Hey Tim, welcome back! Yes, as long as the Turning Point pin box is installed in the locked-out (fixed) position, it functions just like a standard pin box. Your Demco Autoslide will provide the turning clearance, so you can hitch up and tow normally. It looks like you went ahead and picked up the Demco Autoslide Locking Plate for Lippert Turning Point # DM77GV, so with that installed you'll be all set.

Where are you headed first with your Grand Design?

expert reply by:
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Robin H
Demco Autoslide Locking Plate
Demco Autoslide Locking Plate
(click to enlarge)
Timothy L. profile picture

Timothy L.

7/22/2026

Why do I need the locking plate? I ordered it "Just in case". Won't the pin box fit between the capture plates on my hitch? Do i need to use the locking plate? I don't understand its purpose if the plates on top of the hitch hold the pin box and keep the pin from turning. Kentucky for a few days mid-August, then South Haven for a week after labor day.

Robin H. profile picture
Etrailer Expert

Robin H.

7/22/2026

@TimothyL the locking plate is there to create the proper interface between the Turning Point pin box and your Demco Autoslide. While the capture plates help position the pin box, the locking plate acts as the wedge that keeps the king pin from rotating in the hitch head and eliminates any play so the Autoslide can function exactly as designed. Since Demco designed the hitch around that setup, I recommend using the locking plate. Enjoy your trips to Kentucky and South Haven!
Timothy L. profile picture

Timothy L.

7/22/2026

Thank you. Once the locking plate is installed it just stays in place? No taking on and off? If I were to just use the turning point pivot, and not use the autoslide, which fixed position demco hitch would fit into my underbed rail holes? I think I have the ums for chevy/gmc. Would consider replacing the autoslide
Robin H. profile picture
Etrailer Expert

Robin H.

7/22/2026

@TimothyL that is correct it will just stay in place once you install it. If you have the UMS you can use the # DM8550032 for a fixed 5th wheel hitch.
See All (12) Replies to Timothy L. ∨

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