Stalling or Low Engine Idle Speed Due to Dirty Throttle Body on Hummer H2

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: (–)
4 model years affected: 2003, 2004, 2005, 2006
5 people reported this problem
0 people shared problem details
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