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2000 Chevrolet Silverado 1500

Question: What could cause my A/C to only blow out of the defrost vents?

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Visitor, Cedar Park, TX, August 08, 2011, 17:26

It blows cold air, but only out of the top no matter what setting it is on. I've been told it could be because one of the blend door actuators isn't working...

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  • Answer #1

    daveer (see my shops), August 08, 2011, 17:52
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    Most common problem for this symptom is a bad mode door actuator. Like a little motor that changes flaps in th dash. Could also be a controller issue or a physical problem with a blend door.

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