Replacement transmission 2004 Sierra 4wd

[slimpickenz57]

I have been told that the only replacement transmission for my 2004 Sierra 1500 Slt 5.3 4wdr is 2004 specific? Will any other years go in as a replacement w/o having to take it to the dealership to have it relearned?  

[Jsdirt]

It drives me nuts how this myth is spread far and wide ... YOU DO NOT NEED TO GO TO A DEALERSHIP for programming! There are plenty of mobile diagnostic guys, and competent private-name shops out there that can handle programming. Even most transmission shops do this these days.

 

Electronics are funny like that. For the least amount of hassle, I would stick with the year and model of your truck. If you're getting a used one, make sure you get the transmission control module, and the entire wiring harness for that transmission. That way it will be plug and play - otherwise, you'll have to find and pay someone to program it. I would say you could use a different year setup, as long as you have all the above, but I'm  not 100% sure on that - the electronics might not play with what is already in your BCM & PCM.