tjschnei

Ok so my transmission is fine and all when i am accelerating, but when I slow down it seems like through 2nd or 3rd gear it shakes the car fairly violently, I dont know for sure if its the trans, if its warped rotors its definitely more than one, but it seems like its the transmission based on how it feels, but I am wondering if changing my trans fluid would help this out at all possibly, i hope something isn't wrong with the internals of it, its an auto by the way if you couldnt figure out already, but I have no records of it having been done before, but have also heard that when the car gets up to around 100k miles, u shouldnt change it because it could mess up the transmission by doing so, any advice or ideas on what it possibly could be would be greatly appreciated, thanks guys

sc250tt

change tranny mount and get new rotors ,im having the same issue and thats where the trouble spot is