Question about 2005 GMC Sierra 1500 Hybrid
I have a 2004 gmc sierra ext. cab 4x4 and air or heat will only come out of defrost. wont blow out vents or feet. my defroster is stuck blowing on vent and will not switch over to heat on the floor or defrost
Either a vacumn pipe is broken or the ends split so its not passing a vacumn to open the flaps,where they are and how to get to them i cant help because i have never worked on one as they are not here in spain.check the engine end first though .Look for some small rubber pipes running from the inlet manifold
Posted on May 30, 2009
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Posted on Jan 02, 2017
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