iamdub
Full Access Member
Honestly dub, that looks like an add on...I don’t think mine has that. I think, and bear with me im speculating, since its right above the filter access door that you dont have, the po may have had an odor in her box , so instead of gm doing the right thing and adding the door and fliter (may also be prior to door and filter being available.... years ago I remember guys on the truck forums making their own doors out of a piece if metal) and they used it as a anti box stink spray port.... no im not gonna look at mine...
I'm certain it's not a factory and I believe it's to introduce a core cleaner. I guess I'm hoping someone has seen or used this particular type of thing and if there's more to it or a cleaner kit I can get that utilizes it.
I'll definitely investigate once I cut it open. Nurse, pass the scalpel, please...