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Chevy Trailblazer
Trotting

What would cause the voltage gauge to keep flickering up and down?

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2004-07-11 13:38:36
2004-07-11 13:38:36

Either a bad ground to the guage itself or a bad voltage regulator in the alternator. While the enigine is running check the voltage at the battery it should be around 13.5volts if it constantly fluctuates then the voltage regulator is probably bad. Replace the alternator. Otherwise make sure your grounds are good.

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