I am probably not far behind on the transmission rebuild/replacement. but, I am curious. I have searched on threads about transfer case with no luck. my transmission is slipping going from 3rd to 4th. could the transfer case cause any slipping? I changed fluid in transmission, and shifts are smoother, but still slipping. I haven't done anything with transfer case....not sure how to change fluid on it. found the drain plug, not sure where the fill plug is.