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There is a cross connection or short circuit in the electrical system

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9y ago
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9y ago

My guess would be the signal switch is bad.

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9y ago

Either a short in the circuitry or a fault in the switch assembly. Given that it's only happening on the one side, I'd troubleshoot the switch first.

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Q: Why do hazard flashers come on when using right turn signal on my 1990 gmc sierra pick up truck?
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