Chevy Silverado
Chevy S-10
Heater Cores and Blower Fans

1997 Chevy pickup the blower on ac blows on high only does nothing on lower settings have change the blower motor but did not help?

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Answer

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Wiki User
01/24/2007

I think you should look at your fuse panels and see if you have a blown fuse . Some vehicles have a fuse for high and low blower speeds. Your problem is either the blower motor switch itself or a defective Blower Motor Resistor Pack. More than likely the Resistor Pack is defective.