Hi i have a 2001 pontiac grand am se 4cyl and ive been having issues with my transmission, about a month ago the transmission started shifting hard then just went out so i took it to a transmission repair shop and the tech said that it was the pulling clutches and i told him to completely rebuilt the transmission including new electronics and torque converter and he did i got it back and it drove fine for that day then stared doing the same thing my transmission slams into gears and i dont know what the problem is sometimes ill be going down the road and the transmission slams and then the trac light comes on for a little bit then goes back out??? also some days i can drive it a mile or 2 before it starts slamming into gear.. any ideas on what this could be causing it to slam i would think it couldnt poss be the transmission as everything has been replaced? could something else be causeing it to slam into gear.. Thanks for all your help in advance