2010 GMC Sierra Denali Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2010 GMC Sierra Denali
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2010 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.