98 Grand Prix GT, when the car is cold and shifted into reverse it really bangs hard. Once warmed up it seems to be normal. Also, notice when cranking over it is almost like the car is already in gear, you can feel the car almost try to move when it first starts up. Really weird. Think my late mother in law is haunting this thing. Past few weeks have had the upper intake coolant flooding fiasco, rear window regulator broke and now this. Car has the 3.8 NA motor and about 120K on it. Any clues on what is causing this trans problem? Other than the banging the trans seems to be fine otherwise.