legg1042

I have a question for anyone who will answer. About a month ago, I was out of town and my wife had the trans. fluid changed. This weekend, less than 1000 miles later, we were taking her mother home, about 2 hours away. The rx started jerking a little, and when we got to a stop light, it would not go, only rev up. I shut the car off for about 5 minutes, and started it back up and moved to a safer part of town, (about a mile) where it started doing it again. The next morning I had it towed to the local dealership where they want to give me a reman trans. The people I've talked to in my office think it might be more simple than a completely new trans. I don't know exactly what to do. Any suggestions will be extremely helpful. 1999 RX 300 AWD.