2003 GMC Sierra 3500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 GMC Sierra 3500
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2003 GMC Sierra 3500 ProblemsCheck Engine Light Due to Gas Cap Issue
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The daytime running lights are prone to burning out. Our technicians tell us that the light sockets may show signs of heat damage but usually are OK. Always be sure to use the correct replacement bulb for the best life expectancy. The new bulb recommendation for 2001-2003 models is #4114K (trade number).
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.
2003 GMC Sierra 3500 QuestionsMy Heated Seat Control keeps coming on without notice & It wont shutoff turns on (1 answer)
The heated seat indicator comes on and I shut it off and it constantly comes back on automatically. Any suggestions what the problem would be?
How do I remove the starter?
changed motor oil and filter changed feul filter engine still smokes
2003 GMC Sierra 3500 RecallsRecall 05V161000
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.