Check the fluid levels in TC, always good to give it some fresh fluid but if looking ok try adding some friction modifier in there as well. Also do the diffs and add the friction modifier. Take it for a drive and get it up to temperature, then do some slow figure of 8's that should ease things out.
If when checking the fluid you see shiney metalic stuff in the fluid then you have bigger problems.
Hope you get it sorted quick, easy and cheap!