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2008 GMC Sierra over charging


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Posted

Vehicle started over charging. Checked battery and it said replace. Replaced the battery and was still over charging. I also replace the alternator and still charging at 14.80 to 15.5 volts. Don't know what to check next to see what is making it over charge.

Posted

Are you checking charge voltage with an external meter or are you going by the dash gauge?

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