Noise when trying to downshift under lockup

[87gninpa]

When cruising at about 45-50 with the converter locked, when i try to downshift there is a low groaning noise which sounds like its coming from the trans......Trans shifts fine and firm like new, could it be a tourque converter problem? any help would hbe appreciated

 

[Turbo Kueng]

Hi
I saw your old post. I have now the same problem as you had. Could you say what the problem was?
Thanks and best wishes from switzerland.