Is a TCM reprogram needed?
 

I have a 2005 coupe and i need a ATX transmission installed. Just wanted to know if i got another tranny will i need to reprogram the TCM (that come with the new tranny in order for it to work? If so is there anywhere i can take it other than the dealer to do so. I feel like if its out of the same year car it should work from another car of the same model year??

Some people yes, some people no, sorry I can't be more specific than that. Why not just keep your existing TCM so its not an issue?

Well the reason i am doing the trans in the first place is because i think i have an issue with the solenoids and since you cant buy just the solenoids you have to purchase the entire valve body and thats about 1100+ and you do you have to PROGRAM that and not only that the tranny has about 200,000 on it so i said what the heck just get a low mileage tranny and tcm since it is inside of the trans. I figure since it is from the same year and model that it shouldn't need to be reprogrammed.

solenoids are available for the valve body, look on amazon or ebay.

So is there a thread on here or the 350z site of someone installing them successfully just want to do my research also is the 350z tranny the same?

I haven't had any problems swapping same generation TCMs before. I have a 06' FX35 TCM in my 05' G35x. The only time you should need programming is if you buy a factory "NEW" transmission because they come blank.