2001 Pathfinder LE Transmission Issues

I have an automatic, and since weve had it (3 years now) it's always shifted a little rough from time to time and revved a little higher than normal as well. in the last few weeks i've noticed that its almost slipping slightly before shifting on a more regular basis. transmission fluid is topped up.

anyone have any ideas what this could be?

thanks in advance

I have an 01 Pathfinder too and have this same problem. After doing some research I found that there's a TSB for this problem (I think someone posted it here a while ago). I remember it mentioning something about replacing the Transmission Control Module. I'll see if I can find it.