Battery guage on my 2006 Envoy just went past 19 volt mark. Drops a little when all electrial items on. Does not drop when stopped and reetarted. Mike in Michigan

Asked by Mar 26, 2016 at 05:28 PM about the 2006 GMC Envoy

Question type: Maintenance & Repair

Have not checked cables or voltage at battery or alternator yet. What's most likely problem

2 Answers

251,245

Perform your test first, might be just your gauge?

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73,065

Or what would cause this to happen would be the voltage regulator in the alternator. Check the voltage at the battery when running like Tom says, there should be like 14.5 to 14.7 DCV at the battery if the alternator is working properly.

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