Torque Converter Shudder

[CAPN Harley]

Help me out I just got back from taking a camping trip and pulling my 5er and now between 40 and 50 mph truck shakes real bad. Is this a torque converter shudder I have heard of?:{:{

 

[Redmega06]

You might want to check the rear u joint as I had it go out and after I replaced it I think that I bought it with it bad. I think I recall a lot of other people having the same problem.

 

[SWithrow]

Auto Zone has the ujoints with grease fittings, had to replace mine at 130k