Alternator is not charging. Take it off and take it to Auto Zone or whatever auto parts is close and they will check it for free normally. While your vette is idling go to the DIC and hit options till it shows what your system is charging at.I changed the battery and the altinator ( how ever you spell it) and it wont start. Just makes a clicking noise, so me and some buddies roll started it and it says charging system fault. anybody have any ideas whats going on.