Question about 2004 Jeep Grand Cherokee
When control put on defrost a/c compresor should also come on, with defrost on look under hood and check that compr. is on, you can still control air temp from your controls, also make sure that when on defrost that air is coming out of defrost vent, if it is not could be a bad vacum hose, look under hood for vacum hose going into fire wall that it's connected and that it has vacum, good luck, hope this was very helpful.
Posted on May 14, 2010
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Posted on Jan 02, 2017
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