Rich, when I went to the dealer mine was under warranty so they did not listen to my diagnosis. They changed the temp sensor, computer, and messed around till I begged them to at least "check" the pump. 1 hour later they called me to say I was correct and come pick it up. I don't think the dealer will install the johnson pump for you. I haven't done it but after the warranty is over I will do it myself. There are plenty of threads that will instruct you how its done if your handy that way. I also don't believe the pumps are a perfect swap and fit but don't take much to make it work.

Good luck!