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Problems for specific Hummer H2 years:

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Most reported 2006 Hummer H2 problems

 

Verified for the Hummer H2

Illumination of the Check Engine Light can be caused by a loose or worn gas cap.

11 Reports
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Verified for the Hummer H2

The fuel pump may fail causing the engine to stall and not restart.

9 Reports
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Verified for the Hummer H2

The CD player may fail due to an internal fault with the radio. Our technicians tell us that in most cases, the radio unit will need to be sent to a specialty repair shop to correct this issue.

8 Reports
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Verified for the Hummer H2

The steering wheel position sensor may fail, resulting in the service stability message being displayed.

7 Reports
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Verified for the 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.

5 Reports
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Verified for the Hummer H2

Units with 4 wheel disk brakes may develop at situation where the park brake does not hold as it should. Our technicians tell us this can be caused by worn park brake shoes located inside the drum section of the rear brake disks. The worn shoes should be replaced and properly adjusted to correct this issue.

5 Reports
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Verified for the Hummer H2

One or both secondary air injection check valves may become restricted causing poor air flow resulting in illumination of the Check Engine Light. It is often recommend to replace both check valves even if a fault code is set for only one bank of cylinders. Replacing only one valve may result in a return trip to the repair shop.

5 Reports
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Reported by msmartinez and 1 other for the Hummer H2

After my H2 is parked awhile (mostly overnight), I will find the rear end has "dropped" approximately 6" as compared to the height of the front end. The rear end will regain its height once the engine is turned on. This happens intermittently.

2 Reports
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Verified for the Hummer H2

A clicking noise may be noted from the turn signal flasher after the turn signals are switched off.  This is commonly cause by a faulty turn signal switch which will require replacement.

2 Reports
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