Volt meter goes to 15 and stays there, then drops to 13 and stays there

Asked by Mar 14, 2017 at 12:21 PM about the 2011 Chevrolet Tahoe LTZ 4WD

Question type: Maintenance & Repair

My volt meter runs normal, then moves up towed
15 and stays there, then drops to 13 and stays
there.  Replaced battery and alternator, any
suggestions

1 Answer

73,645

Have the charging system checked. It should be charging no less than 13.8 DCV and no more than 14.7 DCV. This sounds like a bad voltage regulator to me.

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