Transmission Problem?

I have a 93 chevy fullsize (automatic), and my trans is not working right. I put it in drive or over drive i get nothin unless it revs to 3000rpm then it goes a little then oil pressure drops, but in 2nd gear and first it drives the way it should. It has trans fluid. Any1 know what it could be?

oh and I drove it a week ago and it was fine and it just been sittin gettin it ready for slammin n jammin and drove it today and thats how it acted. ALWAYS SUMTHIN! F**K

tranny is slippin, time for a new one.

its slipping because the clutches are wearing out. i would get it rebuilt. it should have a 700r4 in it. it shouldn't cost to much to rebuilt.