Hi new to the site. Got a series issue I have searched the forum some but would like feedback from a few on here of what my problem May be. Now transmission is 4l60e auto has been driving great fluids fine has 200 on it was driving at 55 mp3 would not shift out of 3rd into of now pulled in gas station and ended up not driving just revving out in R D 3 2 1. Disconnect positive on battery and it fixes but as soon as I put it in any gear it will just rev and not go anywhere I'm very limited on funds and trying to get better input on my situation any insight advice us highly appreciated. -Jeff