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Discussion Starter #1 (Edited)
2006 LT 3.5 with 140k. HVAC has always worked fine but today I start it up and suddenly when I put the mode dial to defrost it comes out of the dash and when I put it on dash vents it comes out of the floor?? When I put it on floor vents I get a mix of dash and defrost. Must be the hvac control unit? Anyone seen this before?
 
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