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

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: (–)
4 model years affected: 2003, 2004, 2005, 2006
7 people reported this problem
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After so much frustration I decided to check with a online mechanic about my engine's symptoms and was told to remove and clean the "mass-airflow sensor" with a special chemical for this purpose. It a control device that regulate how much air enters the engine intake. I did as instructed and the same problem occurred, stalling and flooding.

After that I decided to check the air filter and when I opened the compartment I found many Honey Bees lodged in the filter cells and leaves and blooms from Pecan trees filling 1/3rd of the filter compartment. I cleaned out the debris, vacuumed the compartment and replaced the air filter. I crank the engine and it ran like it did when it was new.

It appears that the dead bees were blocking the filter cells and the leaves were being sucked into the filter cells under negative pressure which were reducing the airflow into the engine.