So my 98 SC2 has around 207k miles and the auto transmission is acting up. I remedied this with some Lucas Automatic fluid, but that was just to mask the problem. I know it has something to do with the input shaft nut and/or the valve body but I am not 100%. Since the Saturn Fan forum is dead, can anyone send me a link or paste a more detailed explanation of it? And also if there are any other tips and tricks to maintain the longevity of the tranny?

 

We need to know under what conditions it slams before we can help you. And anything else it does that is not by original design.

 

Input shaft nut.
I'd like to see that.
Do you have any experience with trannys?
Your request is so lacking makes me ask,