battery light on after 2 minutes of highway speed, goes out when slowing down

Asked by bogi15 Jul 19, 2014 at 08:09 PM about the 2003 Chevrolet Monte Carlo SS FWD

Question type: Maintenance & Repair

battery light comes on after 2 minutes of highway speed,  goes out when slowing down
and stays off until highway speeds again.  Have changed battery and alternator in effort to
repair but same problem exists.

3 Answers
51,265

John answered 10 years ago

If your connections are good and clean, have the alternator checked. You may have a diode going out. Make sure the belts are good, and tight.

Mark helpful

Your Answer:

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