In 1998 I co signed for my grandaughters new car. She made payments on time for a few months then lost her job and quit paying car loan payments even with her unemployment. I was unaware of this until I received a formal letter of judgment. In 2000 I went to court and GMAC won the case, repossessed the car and state I owe the balance. I told the judge that I will not pay for it. well 9 years have passed and I recently received a letter from GMAC wanting money from me. What are my rights after 9 years. What can I do.