If you have a digital multimeter, you can check the charging system yourself. With everything off, take reading across battery posts. What is the reading? Start the vehicle, take second reading across battery posts, the second reading should be higher than the first, if charging system is working. Check alternator and battery connections, clean and tight. Yes, Autozone should be able to test charging system.
Monday, April 25th, 2011 AT 4:18 PM