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Q: Instrument panel lights flash on 1999 Chevrolet Silverado 2500

The security light, the low fuel, and battery light flashes. the gear selector won't light up. when hooking up to the diagnostic port obd2 will not show any diagnostic codes. four wheel drive won't light up.
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Check your basics first. battery and charging system. Low charge or failing alternator can cause all sorts of weird symptoms.
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