We bought my girlfriends 2004 grand prix with 88,000 miles, we test drove it and didn't have a problem. After we bought it, we drove it a few miles down the road and we started having the problem. Its when you come to a stop, then go to take off, its like it doesn't engage for a blip second then engages (so kinda of jerky and doesn't seem good for the trans). So the dealer got the trans fluid and filter changed, but we are still having the same problem. Someone said it could be a solenoid but i wanted to see what you guys suggested.
Thanks