How do you fix circulation dampers on a 2005 chevy express?

Asked by Sep 23, 2010 at 05:57 PM about the 2005 Chevrolet Express G2500 Passenger Van

Question type: Maintenance & Repair

My circ fan works but only blows out the defrost registers.

1 Answer

15

General Motors usually controls all its blend doors by vacuum. Sounds like you have the main line that controls that system either damaged or disconnected. Defrost is the default for this system for vision safety reasons.

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