Question about 2003 GMC Sierra 2500HD

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Voltage gauge on 2003 gmc sierra pegs out - 2003 GMC Sierra 2500HD

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Have u measured the voltage at the battery? if not do so and post it back here. if it is more than 14.6 volts u have either a shorted cell in the battery or a defective voltage regulator in the alternator

Posted on Jul 27, 2009

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