Hi all and good evening. I have a 99 blazer ls that has the 4 button 4x4auto function( bad motor), I also have a 2002 blazer ls w only the 3button 4x4 option. (W/ bad transmission) I plan to put trans from the 99 into the 2002, but am wondering if it's possible to do a full transmission transfer swap from the 99 to the 2002. If so, what all would need to be done?
thank you all in advance for any help in this subject.

 

It would theoretically be possible, but a lot of wiring throughout vehicle and a different PCM software flash.