Car Problem Reports

GMC Sierra Denali Stalling or Low Engine Idle Speed Due to Dirty Throttle Body

GMC Sierra Denali Problem
6 Reports
Me Too

Model Years Affected: 2002, 2003, 2004, 2007

Average Mileage: 141,500 mi (108,000 mi - 175,000 mi)


A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern.

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