Car Problem Reports

GMC Yukon Denali Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail

GMC Yukon Denali Problem
8 Reports
Me Too

Model Years Affected: 2001, 2002, 2003, 2004

Average Mileage: 104,250 mi (57,000 mi - 150,000 mi)


One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

  • Visitor, , 57,000 mi

    HVAC is blowing air out defrost and floor. Will not switch to vents.

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  • Visitor, , 140,000 mi

    This is terrible. Dead of summer, and the a/c turns to blazing hot heat... I followed a reset process researched online involving the removal and reset of the AC fuses, and setting cycles. still not exactly right

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