Have Transmission Questions? Ask a Mechanic for Answers ASAP
Hello and welcome! My name is ***** ***** I can assist you with your question. It sounds like the TCM itself has gone bad. However, you will need to check all powers and grounds going into the TCM to confirm it is bad before replacing it. Also, you might want to try and use a different scanner just to be sure it is nothing with your scanner as this does happen from time to time. If another scanner still will not communicate with it, then check all powers and grounds going into the TCM and replace it as needed. Glad I can help!
It's Amedee from just answer. I am just checking in to see how things turned out and if you need further assistance. Please let me know.