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

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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Average mileage: 141,500 (108,000–175,000)
4 model years affected: 2002, 2003, 2004, 2007 more
6 people reported this problem
1 person shared problem details
at about 100k had to have throttle body cleaned, fixed problem
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