In all this time those shops didn't try to put in a completely different used trans to see if it does the same thing? ? Doesn't have to be rebuilt, just good enough to survive 5-600 miles. If it still does it then it would be a programming issue right? ? At least they could narrow it down some.
No, that would be too much work and would make too much sense.....
It's funny, everyone of these guys (30+ years experience each) have completely different takes on what needs to be inside a 48RE and how they need to be setup.
Last edited: