This is the 3rd grand prix ive had all 2 door coupes a silver 99 a black 01 gtp and my red 02 i have now. The bad part the 1st one I had in high school blew trans in that with 100k miles on it beat on it never had ne problems after that. The gtp never had ne problems with it had 145k on it when i sold it put around 65-70k on that. My current red gt bought with 52k blew trans up at 68 now car has 118 and blew differential. I fixed that but it still slips in 1st. Im beginning to see a pattern or maybe im crazy! I say these garbage trans last est 60k miles. Oh yea this one I have now is bone stock serviced often fluid is synthetic and filter changed every 30k in the tranny. Any one else blew up repeated transmissions around the same milage? Neither of my rebuilt transmissions were used complete rebuilds by Smittys Trans Shop in Grand Forks ND. Very good guys. Im about to go round 3 with the transmissions