what causes air conditioner not to work on all settings

2006 CHEVROLET COLORADO
66,700 MILES
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GRUMPY1579
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Blower motor only works on setting 4. Settings 1-2-3 does nothing
Sep 6, 2012 at 12:33 AM
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HMAC300
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check your resistor by teh blower motor, they go bad. make sure it is getting power there though.
Sep 6, 2012 at 12:37 AM