I have a 93 GMC Z71 with a 4L60E in it that is slipping. I just purchased a 4L60E out of a 99 Tahoe. Are there any changes I will have to make for this to work? Maybe a different computer? Plugs? Any information or help would be greatly appreciated.

you will need a new adapter for the tcase. the 93-96 4l60e output is a 4 quare and the 97 on is a 6 round like a th400 every thing else should work fine.