What you did wrong was doing it yourself. Not trying to be harsh, but take your trans to a local professional. If you insist on fixing it, get a Saturn service manual.
If it has an automatic transmission, it probably needs to be replaced or rebuilt.
Your going to have to get your transmission rebuilt or get another put in.
because the transmission is going out, it need rebuilt or replaced
Have it rebuilt.
It is a transmission that was broken,but is now fixed with new parts.
price
The transmission could have been rebuilt improperly, or the linkage could have been reinstalled incorrectly.
it is cheaper to buy a rebuilt transmission than to have one rebuilt
Bad transmission rebuilder
I had one. I had to have the transmission rebuilt. Nightmare!!
about $3000.00
Look in the phone book under Transmission and call around. Usually if they take out a tranny that can be rebuilt, they will do so and sell it Phil