I am attempting to swap my turbo 400 to a 4l80e. It's a 1991 class c (van front end) chevy rv with a 7.4, turbo 400, and 3.73 rear end. It currently has a 1228747 AUMZ ecm. Research on this site has told me I need a 16147060 AWAW pcm for what I'm trying to do. I went to the junk yard today and got a complete wiring harness out of a 93 Chevy box van that had a 4l80e in it. Pcm was gone (of course) So I jumped online and ordered a 16147060 BAAX
This site shows that as a 5.7 4l80e pcm. This is where I'm out of my element, and I could use some help. I would like to turn the pcm I ordered into the one I need, and have no idea how to do that. I have access to a Tech 1, and Tech 2 diagnostic tools. (Don't know if that even matters) or do I need something completely different to reprogram the pcm? Any help would be appreciated thank you