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.
1996 GMC Yukon Problem Reports
Most Reported 1996 GMC Yukon Problem Reports
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A Loose or worn gas cap may cause Check Engine Light to illuminate.