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Northeast GM Forum : GM Owners Forum _ Tech Talk _ instrument panel problems

Posted by: GPB Jun 28 2014, 02:31 PM

some advice needed to make a diagnosis and repair...all my warning lights are on and speedometer is only showing speed when headlights lights are turned on.. when head lights are off i get no speedometer reading and warning lights are on.. is it a bad wiring harness or what ?...

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