Dec 192011
 

I have a 2002 Monte Carlo. Occasionally while driving I will here a buzzing noise and on the message center the battery light will come on for about 5 seconds and then the brake light for 5 seconds and go off. Any ideas?

  3 Responses to “Buzzing Sound”

  1. do the dash lights come on in a similar manner as if you are first starting the car? Sounds like some loose connections at the battery or ignition switch.

  2. No just the battery light comes on and then goes out after 5 seconds or so.

  3. When the battery light is illuminated it indicates the alternator is not charging the battery.

    Since the light only comes on for a few seconds and then goes back out I would think that if you checked the alternators output voltage you would think it was good, however if you tested the internal diode(Autozone can do this free) you will find the diode is bad….

    Have it tested to make sure before replacing it.

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