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Newest reported 2006 Hummer H2 problems

Check Engine Light Due to Gas Cap Issue

for the Hummer H2

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

10 Reports

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Check Engine Light Due to Restricted Secondary Air Injection Check Valve

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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Clicking Noise From Flasher When Turn Signals are Off

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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Parking Brake Does Not Hold Due to Worn Parking Brake Shoes

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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Stalling or Low Engine Idle Speed Due to Dirty Throttle Body

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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The Fuel Pump May Fail Causing the Engine to Stall or Crank Over But Not Start

for the Hummer H2

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

7 Reports

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Service Stability Message Due to Failed Steering Wheel Position Sensor

for the Hummer H2

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

6 Reports

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Rear-end lowers after being parked

Reported by msmartinez 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.

1 Report

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