manual to repair automatic box GM Cavalier 98

Very good morning friends from the first forum to congratulate them on this page that is very complete. I have problems with the box of my cavalier 98 that I have to do it but I do not trust that they repair it well for it I need the manual of that box to see how it is repaired and do it with my mechanic someone could help me !!!! and thanks in advance to everyone a cordial greeting thanks