2003 GMC Suburban battery not charging sign

2003 GMC SUBURBAN
150,000 MILES • V8 • 2WD • AUTOMATIC
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BLACKSUBURBAN
  • MEMBER
  • 1 POST
while i was driving my GMC 2003 suberban the battery sign appeared and a sign saying battery not charging and the battery gauge went down to 12, then i continued driving and it went back to 14 , after a while it went back to 12 and the sign appeared again, this happened four times and i continued driving, thought it might not appear the next day, but still it did apear again, what do u think the problems is ? please
Feb 6, 2009 at 6:43 AM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi:
Either the alternator or the regulator is going bad. The cheapest thing to try is have it checked at a parts store when the light is on. They won't charge anything and it may answer the question.

Does the battery ever go dead overnight?

Joe
Feb 17, 2009 at 6:50 PM
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