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My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.My info is somewhat limited on your model here but I had seen no one else has responded and would like to see if I can help here.If at any time you feel that I cannot help with this please let me know.
With no communication to the TCM the power and ground signals need tested to the TCM as well as wiring checked for any issues leading to and at the TCM.If any faults are found the affected wiring will need repaired.If all wiring is checked and found o.k. then the TCM itself may be faulty internally needing replaced.I have seen TCM failure in the past before cause the U code and the speedometer issue needing replaced.Keep in mind when the speedometer is not working the odometer will not work either.
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