I have and 03 civic and ive been having issues with it shifting like the other day I was driving around and when I went to reverse into my driveway it wouldn't go just revs then engine and then I go to shift into drive and same thing but it will go in neutral and it doesn't happen all the time.. is there a switch in the transmission that could be going bad or is it something like a clutch slipping I'm lost PLEASE HELP!!!