2003 GMC Sierra Denali Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 GMC Sierra Denali
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2003 GMC Sierra Denali 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 spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.
It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
2003 GMC Sierra Denali QuestionsAlso the service stability system contiously flashes on and off...while the ABS (1 answer)
system is engaging and it gives the sound of a bad brake booster..
and the brakes to engage without me stepping on brakes.
When the rear streering is engaged electricly, it goes into gear but a light comes on that says;"Service".
The steering works for that one time and then disconnects
or goes out of gear and back to two wheel streering.
How do I service or take care of this problem myself?
2003 GMC Sierra Denali 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.