so I got a new ecm for my 04 yukon l59 5.3 which originally had a p59 ecm on OS 12585950, and the new p59 ecm is out of a 2005 escalade and it's OS is 12592618. i can change this one to 5.3 engine, but what else is needed to change to run my yukon? I know I'll have to do a write entire on my bench harnes like i plan on doing but I'd like to put my vehicles vin to this ecm. Is there any suggestions you guys have?? I know I'll have to license the yukon to be able to write to it but i would like to put my vin and whatnot on it.
05 escalade calibration details..png04 yukon calibration details.png