Originally Posted by Jason

I've noticed something for a few months while driving my Z (automatic). Whenever I shift from 4th to 5th gear, the tranny hangs a bit. There's a noticeably longer delay in catching the next gear and you can see the RPMs jump right before it goes to 5th. There aren't any clunks or anything of the sort. Aside from that, the tranny is smooth. Any idea what that could be or what I can do to fix it?