Problem with Transmission

This is a question for my brothers 96 Teg GS. The problem is with his automatic transmission…I think… When he starts his car, you don’t have to crank it. Just plug the key and turn it, than it will start. Another thing is when he shifts into gear (park and neutral) there is a grinding noise. Even when his car is on and parked, there still noise coming from his transmission. What could be the problem? Has anyone else experience this before?