95 sc2 saturn Trans shifting hard

Automatic or stick?

Sounds like an automatic since they are changing fluid religiously, but you are correct in that the OP should have been more clear if they want a meaningful reply. If it is an automatic, then try the reverse slam fix at the Saturn Forum:

This is cheap and pretty easy to do. Also make sure all the grounds and battery are good since the computer controls all shift points. The last thing to check are the shift solenoids. I posted a procedure here about 6 or more months back. Check the Google archive. Good luck.

Bob

It is an automatic!

Bob, I have read numerous replies that you have posted and have read and actually done the reverse slam as of last night,,,so far so good,, but i do have questions about it,,,does that work with any transmission or just saturns...i have 89 buick century kinda shifts hard also...would that help that....possibly...oh and with the reverse slam,,so you empty out the fluid that you did the reverse slam with to get rid of the crud???

I have no idea if it works with other vehicles or not. I'd suggest you contact the original poster (Wolfman). As I understand it, using fresh fluid, filter and a trans additive and then getting the trans fluid extremely hot by using the reverse gear causes the debris and gunk in the trans valve body to become dislodged and then trapped in the filter and/or drained out the drain plug opening. I believe the Saturn used an electronically actuated, computer controlled solenoid valve body. I believe the TAAT was unique to the Saturn. I have no other GM vehicles so can't comment on if the same principle or similar design was used in other models or if this would be helpful.

I'd suggest looking on Google for GM forums to ask there or do more research.

Bob

Google this group for "Valve body"

Every transmission GM has built for the last decade or so has used solenoids. One thing that stands out on the TAAT from the rest of GM's transmissions and everyone elses that I know of is that the TAAT has the easiest valve body to access. However since the excess fluid from the VB doesnt drain straight off into a pan it might be a reason it gets crudded up. I cant say for sure though. I think heart surgery is often less complex.

Thanks Bob,, appreciate your comments and appreciate you giving your time to help other folks with problems...