Quote Originally Posted by whiskychaser View Post
Shift matrix looks exactly as it should. But TBH it doesn't really matter. When you disconnect the TCM, no MVs or EDS are working - you get full line pressure to either reverse or 4th gear. I'd suggest a broken manual shift valve but you will have installed one with the valve body kit. No insult intended, but did you ensure it was hooked up correctly?
Temp sensors are also known to fail- and are easy to test. I think they cause all kinds of havoc and limp mode when broken, but I'm not sure. Certainly valve operation is the other common cause of operational/running faults.