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Problems for specific GMC Yukon XL Denali years:

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Most reported 2009 GMC Yukon XL Denali problems


Verified for the GMC Yukon XL Denali

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.

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Verified for the GMC Yukon XL Denali

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

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