03 trailblazer voltage flucluation

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June 2nd, 2018, 11:39 AM

WardC

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03 trailblazer voltage flucluation

My voltage gauge is fluctuating from a 14 to 12, turn signal indicator is blinking faster that normal and at nigh I have notice my headlight dimming. Wht might be causing this

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June 2nd, 2018, 1:35 PM

kevinkpk

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June 2nd, 2018, 1:35 PM

kevinkpk

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The turn signal issue might mean you have a bulb out.

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June 8th, 2021, 7:43 AM

hughjd

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I had a alternator on mine that started out cold when first cranked. After getting hot after a while voltage would drop from 14.57 to 13.3 just enough not to cause discharge light to come on. Found bad voltage regulator inside alternator to be the problem.