Question about 2007 Chevrolet Chevrolet Silverado 1500

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Climate control fan won't work in cold weather

My climate control fan will not switch on in extremely cold or hot weather. If it's above 32 degrees it circulates at all temps and fan speeds. When the temps are in the upper 90's it does the same thing. Fan won't circulate.

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Most commonly resistor and wiring?

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