After few hundred miles on highway car would just shift from 4th to 3rd and lock up there. If I stop and turn it off and than turn it on it would shift all gears and again and after a little bit it would lock back in 3rd. Any ideas?
I would highly appreciate if somebody could help since I’m going to take this car on 1,700 mil. trip and the last thing that I need is transmission failure.
Thank you