As I recall, there were 3 pcms, 4.3 used a 8625, then the 350 L60 used one, and the 80 used another. Grumpy >> I think so as it has the electronic trans. No kickdown. Just don't >> want to rip apart dash to find ecm. Replacing with 747 is out of question... >> old man will flip! >7747 won't work. ECM part no is in the archives.