2009 GMC Sierra 2500 HD Problems
RepairPal has identified the most common problems with the 2009 GMC Sierra 2500 HD as reported by actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.Refine by vehicle
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
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.