Improper HVAC Temperature and/or Air Delivery Due to Failed Mode Door Actuator on Hummer H2

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.

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Average mileage: 115,135 (12,259–184,000)
3 model years affected: 2003, 2004, 2005
49 people reported this problem
28 people shared problem details
2003 Hummer H253,000
battery when dead and when replaced air only comes out defrost vents under windshield, have not fixed it yet looking for info about this problem
2003 Hummer H2144,000
hot air blowing out the vents. No cold air will blow out.
2004 Hummer H2124,000
A/C and Heater blows only through defrost vents; problem occurred immediately following battery replacement at Sears. Online Blogs suggest easy, relatively inexpensive fix by replacement of Mode Door Actuator; however, Hummer dealer indicated ~ $1000 repair charge for service requiring removal of entire dashboard.
2003 Hummer H274,000
drivers side stays cold passanger sid works fine just started what's the problem /
2004 Hummer H2124,000
air delivery only coming out of defrost vents,problem delivery door actuator failure
2003 Hummer H2184,000
ac blows hot even when there is freon
2003 Hummer H2153,000
Drivers side heat comes instead of cold air.
2004 Hummer H2132,000
Not exactly sure if it happened when changed battery but close to that time. Air doesn't blow hard and direction varies. Air feels like it is pulsating out of vents. Dealership said it needed new door actuator behind dash. Contemplating repair. very costly.
2004 Hummer H294,000
hot air on driver side cool air on passenger side
2004 Hummer H290,000
A/C will only blow through main vents.. will not defrost.. A/C stays running on driver side not matter what the switch is set for
no air out vents
2003 Hummer H2112,000
Same thing happen to my hammur one I replace the new battefie it it only blowing air from the defrost area......
Once in a while the air vent shoots out very hot air! I turn off the system once or twice to resolve it!
2003 Hummer H2150,000
The a/c turns on I can hear the compressor work but no air is blown through the duct systems. Please help
2005 Hummer H2135,708
ac started pulsating, then heat started coming out of the driver side dash vents while cold air was coming out of passenger side dash vents when in ac mode, now cold air is coming out when it is in heat mode? looking for answers.
2004 Hummer H2105,000
heater & a/c fan does not run
2005 Hummer H297,349
Looking for fix
2005 Hummer H2174,000
air stopped working after battery change, will work if cut on and off several times sounds like acuator door
2003 Hummer H2178,342
Only Hot Air In the Driver Side Am Still Looking How Can I Fix This problem
2003 Hummer H2125,000
temperature will not stay normal. It will fluctuate and be very hot. I had to run the ac when it was 32 outside to get it cooled off inside. The cool air would only come out at 60. Even turning it to 61 brought out the hot air.
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