No clue. It was an independent shop but I do know my 400 dollar job came to almost 3 grand when I picked up my truck.Sounds like inflated dealer prices to the factory.
I had a dealer tell me it would be $7500 to change injectors in a bus, but said it needed a new power stroke at $15500 installed and new warrantee. That was complete with fuel pump. That was in 2020
Oil change solved the slight problem and is running strong in NY today. Id trust the media before I’d trust a dealer.