I turn my control to defrost but air keeps blowing out of face dash why?

10

Asked by joes689 Dec 15, 2015 at 06:49 PM about the 2000 Chevrolet Blazer LS 2-Door RWD

Question type: General

10

joes689 answered 8 years ago

I turn my control to defrost but air keeps blowing out of face dash why?

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25,265

Mark answered 8 years ago

One of the control actuators for the ventilation system has failed. Check this video to maybe help you diagnose which one: https://www.youtube.com/watch?v=oB2hnvqB3Qk

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Billy_Bill answered 8 years ago

I had the same issue, I found that the vaccum line for my ac/heat system was not secure, I put it together and it started to change from vent to defrost, the vaccum runs with the main wireing harness and is right by your brake booster

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