Looking for anything that could help, I tried Jeep Customer assistance and after several back and forth emails, I have this juicy tidbit:
Thank you for replying to the Jeep Customer Assistance Center.
Unfortunately pictures do not come through. Without knowing what the
part name is we cannot assist in locating the part number. The best
thing to do is talking to the service department at a dealership in
hopes they will know which part you are looking for. We are not
technically trained and rely on our dealerships for questions like
these. I am sorry I cannot assist you further.
Thank you again for your email. Should you require additional
assistance, or have any new information to provide, please reply to this
email message or call 1-877-I-AM-JEEP
They can't receive pictures and I had already explained that the local dealership could not help me. Their reply basically reads like: "go away".
I'm afraid that is an industry-wide thing. Car companies refuse to engage in any form of techinical assistance outside of dealership service departments. Well, I know of one possible exception... and her first name is Kori, haha.
Anyway... the picture thing doesn't surprise me, because if they could receive pictures (they probably can but won't admit it...), that means they would have to look at them... and try to reply to a technical question... which they are trying very hard to avoid. It's funny because you could simply host a picture on Photobucket, Instagram, Dropbox, etc... and give them a link only, and I'd love to hear them explain how/why they can't access those lol.
The diagram @IRSmart
posted was of course the first one I found when digging around for this plug, and I couldn't understand why our plug isn't on it. I think I know why now : the plug we are looking for is inserted from the engine bay side, not the cabin side, and I believe the diagram we have is for cabin side plugs only.
As far as the name of the part goes : well... is it a plug ? A grommet ? A cap ? Sigh... I've given up looking. I may get a second wind over the weekend
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2015 North (Canada) - V6 - AD1
Cold, Tow, 8.4A, 9 speakers with sub