Well my old transmission died on me so I replaced it with a lightly used one. The transmission works perfectly fine except when I go to trow it into park. If I park on a level surface the transmission will not recognize that it's shifted into park and locks up. so I have to get out and just lightly push the car backwards and I hear it click. Also when I park on an incline the transmission will roll back or forward just slightly and the selector shows it is in park.
Is it possible the shift cable needs adjusted?
it's a 97 GP GT, with a 96 regal tranny.