GMC Yukon Denali
Report: Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail
GMC Yukon Denali Problem
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.