hello, im new here. i just got a 99 seville sts BEFORE finding this website. it has 104,000 miles on it and after reading this i may sell it now. runs good and passed MD state inspection already. mint inside and out but im scared off by the listed problems from others on this site. checked the codes and all of them seem to be related to a bad battery/battery replacement at one time or another. nothing related to emissions, sensors, ect. any advice? hold on to it or unload it?