Lost 4th, but it came back?

It said it happens up to 2000. any other ideas Nate?

Anyone?

4L60-E Rebuilt Valve Body 1992-2003With New Gaskets:eBay Motors (item 200243653504 end time May-29-09 04:51:18 PDT)

I think I am just going to get this and call it a day. Then I will know that everything is working good.