I have a 1998 Chevy Cavalier that has a problem. My battery light is on, does this mean I need a new battery and if so, what is causing it to go bad?
The battery light does not mean the battery is bad. It is telling you that the battery is not charging. This is an indication that the alternator is bad. You can use a multi-meter to test the voltage being charged to the battery. The voltage should be between 13.5 and 15.5 . It is a good Idea to charge the battery after replacing the alternator to insure a good start. Test when installed to make sure there are no other issues.