2003 GMC Sierra 2500 HD Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 GMC Sierra 2500 HD
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2003 GMC Sierra 2500 HD ProblemsImproper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator
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.
The speedometer or other instrument panel gauge may begin to work erratically at times. Our technicians tell us that the instrument cluster must be sent to a repair facility to correct this fault. The warranty has been extended on some of these units to 7 years or 70,000 miles.
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).
2003 GMC Sierra 2500 HD Questionslow idle? (1 answer)
so my dad took his truck to fix his starter and he got it out and today it started having low idle problems which he said has never happened before with the truck any idea's before we go waste money?
I replaced the water pump and test drove and worked great. I stopped to check for leaks and found none, but the temp started rising so I drove straight home. I them let truck idle and the temp went to 210 and them to 260.
the truck will run at reduced power and show the same on disply shut tr off and re-start and will run fine until it does it again is not aheating problem.thank you
2003 GMC Sierra 2500 HD 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.