Thanks for the help again! So here's a quick summary on what I did to fix it for anyone else that comes up on the same issue. For my 2015 34J the part that I needed that went into the grey harness was a "Delphi Metri-Pack 280 Series Female Unsealed Terminal 12034046, Cable Range 20 18 ga (0.50 0.80 mm2) (25 pieces)" It had a marking of 19 on it, which after digging around put it in the 20-18ga size for this 280 series part. This part is also labeled as a Aptiv (mfr that bought Delphi) the Delphi/Aptiv part number is 12034046
I purchased the Delphi 280 series female 20-18ga from Amazon:
https://www.amazon.com/dp/B06ZZJMX7W...roduct_details
Also purchased the crimper (probably could have just used any other crimper, but given I was on a tight timeline to get things working, wanted to make sure I had everything I needed):
https://www.amazon.com/dp/B071KFLY43...roduct_details
Was able to pull the old/deformed parts off, crimp on the new female terminals and insert them into the harness and then connected successfully back into the Chasis.
A few notes: I called a few RV places and they insisted they were GM parts and not something they had/could get without special order. I called a GM dealer to see if they had the parts and wouldn't even look with the VIN to a GM truck (the 34J is a Ford)...I also called a local Wesco (when I called Thor, they just pointed me to Wesco, guess they own Delphi/Aptiv) and they didn't have any Delphi parts in stock in their local location.
Anyway; Amazon came through $13 bag of 25 pieces for the part - $30 for overnight shipping and $18 crimper - took 15 minutes to rewire (felt like that - but being on my stomach wedged between the dog house and the drivers seat, with my head up against the brake petal - probably more like 5) and I was back in business...
Thanks again for the comments, definitely help me piece together the puzzle that ended up solving this issue.