Always blows defroster and feet no matter what the setting
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2004 Chevrolet Tahoe Question: air blows,a/c & heat, why doesn't the mode work, only blows feet and defroster
POSS BLEND DOOR STUCK OR BROKEN SEEK DIAG AND EST
Answer #2milesauto from Miles Auto Service Inc., June 12, 2012, 14:30Master
Mode door or motor that changes the door position may have failed. This problem can be diagnosed with a Tech 2 GM scanner. A few other scanners may be able to do it also but the higher end scanners are needed.
ReplyPARTS GUY, June 12, 2012, 16:21Master
Not just a OBD2 code reader.