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Q: Blower stopped on 1991 GMC 2500 Pickup

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I have checked the fuses inside relays and maxi fuse outside and they are all good. I get no power to the switch but I can jumper to the motor and it does spin.
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If we're talking the heater and AC blower motor in the truck, look for your blower motor resistor - you will probably find a melted wiring connector at it, or the resistor may be faulty.
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