Hey guys. So I have a transmission problem. Everything starts up great. But when I go to shift the car from park to drive. Nothing happens. But the car starts to go forward because of an incline. Then I'll try to shift into reverse. Still nothing but starts to make a scratching sound. Then I'll shift into park and the noice increases badly and continues until I turn the car off. And even when I turn the car off and it's shifted into park. The car will continue to roll if pushed. Until I put the emergency break on. Any ideas what it could be? Do I need a whole new tranny?