Mine is doing the same thing. It started whining and would go and trew the torque converter code. I had the filter and fluid changed and it helped for a while but is starting to do it again since it is warming up. I also put transgard in it, and since it is starting again guess that didnt work. Let me know if the seafoam works i might try that. I cant find any where that shows where the tc valve is or I would messed with it. Good luck.