Will Demco Autoslide Work For 2023 GMC Sierra 2500 Towing Keystone Montana 3781RL

Updated 08/24/2026 | Published 08/15/2026

Products Featured in This Question

Demco Autoslide 5th Wheel Hitch w/ Slider - Single Jaw - Chevrolet/GMC Prep Package - 18K

(768)

$1940.00

Demco Autoslide 5th Wheel Hitch w/ Slider for Chevy/GMC OEM Prep Package - Single Jaw - 18K

(768)

$2235.56

Question:

Good Afternoon, I have 2023 GMC serria 2500 SRW in the 6.6 duramax with the short bed. Will be pulling a Keystone Montana 3781RL. Does the DM59SV Fit my needs? Doess this include the DM6333 with the purchase? For my puck system or need to be purchased seperate? with this fit under my bed cover? thanks

asked by: Nathan F

Expert Reply:

Hey Nathan! Yes, the Demco Autoslide 5th Wheel Hitch w/ Slider for Chevy/GMC OEM Prep Package # DM59SV fits your needs and will work for that setup. This part number does include the 6333 adapter for your OEM puck system.

However, I recommend getting the Demco Autoslide # DM79GV instead. This comes with the adapter plates to mount directly in the puck system, so you have one less part/adapter to deal with. It also allows the hitch to sit lower so you have plenty of clearance for your tonneau cover.

Where are you headed with the Montana once you get your Sierra set up for towing?

expert reply by: Robin H

Demco Autoslide
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Rodney

8/23/2026

I have the DM79GV in my Chevy Highlander and I haven't had any problems with it. It looks like it is also a little cheaper and I like that the puck system mounts to the side.

Robin H.

8/24/2026

@Rodney thanks for sharing! Glad to hear the # DM79GV has been working well for you. I agree, the direct puck mounts and lower price make it a great choice for this setup.

Neil C.

8/23/2026

I have the demco 6077 and pull a 2021 m9ntana 330rl. This hitch is awesome. We've been all over the country. Probably have towed 20,000 miles or so. It fit in my OEM pucks in my 2019 2500 and now my 2024 3500 . Only issue is the weight. Really takes 2 people to muscle it in. Yes , it fits no problem under my tonneau cover

Robin H.

8/24/2026

@NeilC thanks for the feedback! 20,000 miles all over the country is a pretty solid endorsement. Glad to hear the Autoslide has treated you well and fits nicely under your tonneau cover.