Last thing I would do is have the dealer work on my transmission. That's recipe for disaster. In the beginning when I had the truck it needed oil that was hard to find and I sent my wife to the dealer. They looked up the truck and promptly gave her the wrong oil.
Luckily now they recomend Rotella and I can just go to Walmart.
Maybe it is the area I live in where anyone with a technical brain can do a lot better than working at a dealership? But I am scared of the dealer.
G