Last year I had my transmission rebuilt. Since then I have put over 24,000 miles on it, so it is out of the 12,000 mile warranty.

The problem I have is that in 1st, 3rd, neutral, and reverse it makes a weird rubbing/grinding sound. In 2nd it sounds fine. When I put it in reverse, it just sits there like it is in park or neutral and if you give it a little gas it just revs up. It will then bang and lurch into reverse. I sat out in the driveway messing with it and it did better on going into reverse after about 10 minutes. I don't think it has anything to do with being warm or cold, since it had the reverse problem when I first got it home after 20 minutes of driving. When I come to a stop, it lurches like its going to stall out.
I think it is a problem with the torque converter. Does anyone have any insight into this problem? I'm hoping one of you will say its just quick part replacement.
Thank you for your time.