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1999 Cadillac DeVille Question: the information system says battery is not charging-what is the problem? is there a test for the alternator performance for this car?
The alternator can be checked using a voltmeter. Connect the red lead to the positive termainal of the battery and the black lead to the negative termanal of the battery. A good alternator will have 13-14.5 volts.
Answer #21999 Cadillac man October 29, 2014, 23:43Rookie
Your alternator is about to go! Get it replaced now or you could get stranded on a highway in the middle of nowhere like I did! You might have a week or 2 from the first time you see the warning message! Don't ignore it like I did....it cost me dearly!