air blend door hot to cold

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07-31-2011, 05:03 PM

mullinsblazer

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air blend door hot to cold

have a 1999 blazer lt with atc and the blend door will constantly go from full hot to full cold and never stay at a set temperature,dosent matter if it is auto or not is a/c control head bad or is it actuator motor?

09-15-2011, 11:27 AM

harlowr

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ttt

I have an actuator on the blend door that turns every 15 seconds or so.

09-16-2011, 07:55 PM

garryb

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Join Date: Mar 2011

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it maybe the temp sender at the drivers door head liner . the waffle looking thing at door.

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