Question about 1996 Chevrolet Blazer
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Posted on Jan 02, 2017
These trucks have a problem where moisture builds up in the heater box then freezes. When this freezes and you change your heater settings it breaks the shaft for the blend door. If this is what happened you should be able to look under the dash above and to the right of the gas pedal and you will see two vaccuum accuators one of them you should be able to wiggle around the linkage if it is broke. To fix this you need to remove the entire dash to get the heater box out which involves discharging the AC and draining the coolant because the heater core and evaporator come out. Please rate.
Posted on Dec 13, 2008
SOURCE: vacuum leak
Hey there. I've got a 96' blazer and this happened to me as well. Turned out that I was getting the 4 wheel drive checked out because it wasn't engaging and they found that a vacuum hose was loose. The mechanic said that when it is a vacuum hose, the blower won't engage correctly to the desired setting... usually just blows out the defrost. Hope that helps.
Posted on Dec 27, 2008
defrost dorr is not opening check to see if cable clamp has broken or if works off vaccum check for broken vacum line. berrydalewolfe
Posted on Oct 29, 2009
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