Well its like this, last night I change my radiator for a new one, and now my 97 cavalier A/T doesn't shift out of 1st. I was thinking it got air in the A/T oil lines from the ones that go to the radiator?
I don't think that should affect the transmission... air should be circulated out with the flow of oil. How much oil did you lose when changing the lines? Is the trans fluid level still in the safe operation range? did you mess with any wires anywhere? cables?
Make sure you didn't unplug or break any sensor by accident.
Its was the TV Cable, I forgot I was messing around with it before I got the new radiator install ^_^, thanks