Transmission rebuilt
 

I have a question that I'm getting conflicting answers. I have a 2004 Eclipse Spyder GTS with the 3.0 and Automatic. I just had the transmission rebuilt getting ready to put it back in the car. I have been told that after I do I need to take it to the dealer and have it reprogrammed and then I have been told all that needs to be done is have the codes cleared which I can do myself. I just want to do it right so I don't void the warranty. Thank you in advance.