Today I just noticed a puddle of ATF under my truck. After crawling around underneath it seems to be coming from the rear of the transmission right about where it connects to the transfer case. It is a 99 3.9 auto 4x4. It is shifting fine and the fluid level is still good. I had the high clutch seals replaced and a shift kit installed about 18 months ago and all has been well until now. Has this happened to anyone else here? A bad seal maybe? Any input would be great. Thanks for all replies.