Originally Posted by f150fergie

Hopefully it was serviced with enough fluid. Because if the fluid level is low if can sometimes put air in the fluid making it a bit frothy in some cases therefore making it make noise at certain rpm's or all the time. That's why on some older vehicles if you hear a trans whine it may just be fluid level. But if its still under warranty then I would defiantly go get it checked out that way it's at least on record in the computer and if later on if you have issues then can go back to that as well.