Hi, if you have replaced the transmission and you are still having the same problem then it is most likely the transmission control module or even the wiring for the OD switch. or anything in between.
I am sending you the wiring diagram information for the transmission system. As you can see other then the OD switch everything else is located on the valve body of the trany (the relays, solenoids, sensors).
Let me know if you need anything else.
Hi, is there anything else i can do for you? If so please ask if not please accept so i can get paid for my time.