Welcome to the “no dealer will touch it” club. It’s not just Dodge, most Ford dealers will not work on RV’s (especially the bigger ones), but there are a few. I have a class A on a Ford chassis and out of all the Ford dealers in my area, only one will even do simple maintenance tasks. All major stuff (which includes a lube!) I take to a major truck tire / Service center.
I’d call around to some of the independent service centers in your area and see if they will work on it, and can perform warranty/recall services for Dodge.
I ran into this same issue when I had a Winnebago Rialta on a VW front end.
Good luck.
Tom Wilds
Blythewood, SC
2016 Newmar Baystar Sport 3004
2015 Jeep Wrangler 2dr HT