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Resources for the Repair and Maintenance of your 2004 Hummer H2

2004 Hummer H2

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2004 Hummer H2 Problems

Heating & Air Conditioning -- Verified

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

Exhaust & Emissions -- Verified

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

Engine -- Verified

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

Miscellaneous -- Verified

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.

Drive Train -- Verified

Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order.

2004 Hummer H2 Recalls (Recent)

Body, Interior & Misc., July 21, 2005

RepairPal Expert Overview:

The second row center seat belt routing may make it difficult to position correctly on smaller passengers. If the seat belt rides up to fit around the abdomen, the risk of internal injury is increased in a crash. Dealers will cut the guide loop, remove a portion of the loop, and the remaining sides should be folded over and secured with a retainer. The recall began July 21, 2005. The GM recall number is 05037.

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Brakes, June 18, 2004

RepairPal Expert Overview:

The hydro-boost housing relief valve bore may be out of specification. The seal may fracture as a result, which may reduce braking assist and slightly increase the steering effort while braking. Under certain conditions, more braking effort will be required to stop the vehicle. Dealers will replace the hydro-boost relief valve. The recall began June 18, 2004. The GM recall number is 04004.

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Brakes, March 23, 2005

RepairPal Expert Overview:

On vehicles equipped with the Bosch hydraulic brake booster, the boost pressure accumulator may crack and break away from the hydro-boost assembly during normal operation. If this were to happen while the hood is open, fragments from the accumulator could injure people standing in the immediate area. The loss of fluid while driving would cause increased steering and braking effort and a crash could occur without warning. Dealers will test the hydro-boost assembly for function of the two-function valve. If the hydro-boost assembly fails the test, it will be replaced free of charge. The recall began March 23, 2005. The GM recall number is 05006.

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2004 Hummer H2 Questions and Answers

NENE77, 2004 Hummer H2, Tampa, FL

The panel of the air conditioner is not working. It does not turn on. In my beleve it has to be a electrical problem realed withthe fuses. Can you please tell me what could be happening.

Visitor, 2004 Hummer H2, Pawleys Island, SC

71000 miles and not changed. Have idle problem when at a stop

kenneth isyk, 2004 Hummer H2, Loxahatchee, FL

when driving a/c stays about 63 degress when i stop starts to get warm had the system vaccumed down no signs of leaking could the fan cluth be worn it feels fine

krparkerone, 2004 Hummer H2, Satellite Beach, FL

Hi! I have a 2004 Hummer H2 SUV that I recently had all new brakes & rotors put on. In the process of doing so, my Air Ride Suspension was not turned off prior to jacking it up. It has not b...

Visitor, 2004 Hummer H2, Locustville, VA

how do you remove an ignition key from the truck

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