I bought a very clean 96 sl2 with a broke motor. Installed a very good used motor only to find out it also has a trans porb. Cold it shifts hard into reverse then slips little in 2 and 3 and almost always upshifts from lockup to 3 without warning but only whin cold. when it warms up it rarely gives any trouble.I think I have seen a post like this in the past and hate to be redundant but sure would appreciate some help, and maybe some advice on where to get the right part to repair.......tksTroy

ValveBody or input shaft nutEdited by: sw2cam

Tks, I''m vaguly familiar with the valve body, but am not familiar with the output shaft nut at all can you give me a little info and which one would you lean toward.........tks Troy

Sine the shaft nut is the easiest and cheapest to do. I''d do try first.

hi Mike, I''ve done a lot of work on small block ford and chevys, but this is my first time on saturns. Can you pls educate me a little on the out put shaft nut.........tks Troy