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Blower on heat/a not working - 2004 Chevrolet Colorado

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So it works with a/c but doesn/t work with heat. Is that what your saying?
Or it blows cold air on heat selection?

If it blows but only blows cold air on heat selection
check out the following items:
temperature selector switch
blend door actuator and motor.



Here are a list of items to check out or have a shop inspect if it doesn't blow anything at all.
a) on/off switch
b) relay
c wiring
d) resistors
e) blower motor

Posted on May 11, 2010

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