2003 Hummer H2 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2003 Hummer H2
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2003 Hummer H2 ProblemsHeating and AC Temperature and Air Delivery Mode Door Actuators May Fail
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.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
2003 Hummer H2 QuestionsHummer h2 motor kept running but transmission stoo pulling (1 answer)
Indicator light on dash stuck in park position but when gear shift is moved the srive positon the transmission will not engage
I was driving and my transmission stop pulling and the dash light moved to the parked position while vehicle was still moving but the transmission stop pulling and I coast to the sidw of the road
when I shut off the engine the power stays on
2003 Hummer H2 RecallsWindshield Wipers May Work Intermittently or Not at All
Water may enter the windshield wiper motor module resulting in damage over time. The wipers may work intermittently or not at all. Visibility could be reduced, increasing the risk of a crash. Dealers will inspect the wiper module cover and replace it if necessary to correct this concern. The General Motors recall number is 08243.
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.