The TCU/TCM is simple to replace compared to the Conductor Plate. The TCU/TCM is mounted on a aluminum plate located on the passenger side footwell under the carpet. 15 minutes, a 10mm wrench and some side cutter pliers for removing two zipties. It would be perfect if you could find someone in your area to try their TCM to see if it really is the cause of your issue. Just a thought.

Also, try MrMoPar to see if he has a TCU from an NA !!!

Good luck.