Problem overview
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.
36 people reported this problem
15 commentsGMC Yukon XL 1500 vehicles with this problem
8 model years affected
Average mileage: 147,061 miles
(60,000 - 215,000)
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