I have a major problem with my trans in my 2000 gtp. I drove up the street to pick up my son from a friends house and the car was fine. An hour later I left to go to the store, I put it in reverse and backed up, then put it in drive and it didn't want to take off. I had to rev it to about 2000 rpm's just to get it to move. The once it got up to about 20 mph it was pulling fine. Then I pulled over at the gas station checked the fluid and it was full but smelled a little burnt. So played around with it some to see what else it was doing and noticed it would shift from second up to overdrive fine but once its in fourth it will not downshift unless I slow down or manually shift it. Does it mean the trans is shot or is it something easily fixed? I found a low mileage trans out of a 99 gtp for cheap. Will it work? Sorry for the long post. I just wanted to give you as much info as I could. Thanks. Jason