2003 GMC Sierra 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 GMC Sierra 2500
2003 GMC Sierra 2500 Problems
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.
A clicking noise may be noted from the turn signal flasher after the turn signals are switched off. This is commonly cause by a faulty turn signal switch which will require replacement.
The 4WD transfer case position sensor or the selector switch may fail causing the service 4WD message to be displayed.
2003 GMC Sierra 2500 Questions
I was getting 800 KM. per tank before oil change now getting 600Km.
humming noise coming from underneath cab
2003 GMC Sierra 2500 Recalls
The second row center seat belt routing may make it difficult to position correctly on smaller passengers. If the seat belt rides up to fit around the abdomen, the risk of internal injury is increased in a crash. Dealers will cut the guide loop, remove a portion of the loop, and the remaining sides should be folded over and secured with a retainer. The recall began July 21, 2005. The GM recall number is 05037.