Thought I should chime in on this topic after following this forum closely for a few months regarding the hitch and wiring issues. I have a 23 SX Ltd (Canada) that replaces my 2016 Pilot. I have it to tow my boat. I use a 7-pin harness. The dealer sold me a hitch package in the deal. I mentioned I heard of issues with 2023 hitch package availability but they insisted the 2022 package would fit. Brought it to the dealer and they installed the factory hitch and gave it back to me with no cover on the back (looked like sh**) and no wiring installed. They said the cover and harness were "on order" and they would get me back in when they arrive. I asked for the original filler panel back so I could modify it to make clearance for the hitch which I did (see attached photo). It's a kinda rough job using a Dremel but it looks fine for now. If I end up having it on long term I'll remove it and tidy up the cuts. Looks better than a missing panel on the rear fascia!
Read on this forum there was a P/N for a trailer wiring harness for a 23
Palisade. I have an order with my Hyundai dealer. The P/N I ordered is S8F67-AC800 that came from another post on this forum (thanks for the info). Don't know if this will be a solution or not, but I thought I would let it play out to see what happens. I have until spring until I need to tow, but the way this is going makes me think we'll still be looking for a solution from Kia at that time.
Also, I have a case number with Kia Canada on this and I'm disappointed to say the follow-up has been non-existent. I have called then twice to follow up (30-60 minutes on hold each time) they have my info and keep saying they will call me back but they never do. I updated my case with the info on the harness part I ordered - crickets... I'm going to get back on them again this week to get a status report. Not optimistic. At this point I'm probably going to be stuck with an aftermarket harness installation, or maybe the Hyundai harness can be adapted. I'll post again if I have any other news! Good luck everyone with your trailer hitch / wiring / cover issues.
Oh yeah - by the way, I do love my Telluride!