2003 GMC Sierra 1500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 GMC Sierra 1500
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2003 GMC Sierra 1500 ProblemsService 4WD Message May be Displayed
The 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.
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.
2003 GMC Sierra 1500 QuestionsReplaced the starter, crank but not start, coils not firing,new sensor bcm/pcm (2 answers)
The coils aren't firing at all, everything else working including fuel pump, replaced crank sensor, and cam sensor too. Lost. No codes coming up, all grounds checked
To fix one day they just turned off and never came back on
Truck has 215k miles on it. Im thinking its misfiring? Maybe a coil pack? Help me out please
2003 GMC Sierra 1500 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.