well i installed a 2004r trans on the buick but am having issue with the downshifting when I punch the gas.. i adjusted the detent cable to where it shift correctly between shifts it evens downshift the right way when slowing down (even though when i downshift into 1st its shift a little hard )but that besides the point because they say its because of the shift kit they put in it. my only issue is the downshifting when punching it anybody has any idea the trans was completely rebuilt the only thing i have not setup is the lock up switch but dont know if that has anything to do with it.
