Is it the TRS that sits inside the transmission that has too be change. Ore it it a easier fix? Have had a diagnose check, but didn’t find anything wrong.

Pleas help me! THANKS from Norway

 

It´s an 41TE Transaxle

 

I hope you have removed the rear lights and checked the bulbs AND sockets for corrosion,as the wires do not go directly to the socket. They have a type of circuit board that the current path runs thru,, and tend to "goof up", as I have had happen with my last 3 Minivanns of your generation model.