Question about 2004 GMC Envoy

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Air/ air conditioning does not blow air out of dash

This just started a day or so ago...the air will blow out every where else but doesn't blow out of the dash vents. Is this something that can be fixed without a mechanic/dealer. what could be the problem?

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If you are mechanically inclined..you can fix it..the A/C and heater air is directed to different places by the doors in the duct work..and these door are actuated by vacuum..and you might have a hole in a vac line or the vac line came off of a diaphram or a diaphram has went bad..the duct wor could have come apart or the heat/A/C module has went bad..but most of the dash will have to be taken apart to get to the duct work..i hope this will help..if not..write me back

Posted on Jun 29, 2009

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Posted on Jan 02, 2017

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