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: 115,308 (12,259–184,000)
3 model years affected: 2003, 2004, 2005
51 people reported this problem
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Viewing 1 - 20 of 27 problem details
2003 Hummer H2 53,000 mi,
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 H2 144,000 mi,
hot air blowing out the vents. No cold air will blow out.
2004 Hummer H2 124,000 mi,
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 H2 153,000 mi,
Drivers side heat comes instead of cold air.
2003 Hummer H2 74,000 mi,
drivers side stays cold passanger sid works fine just started what's the problem /
2004 Hummer H2 124,000 mi,
air delivery only coming out of defrost vents,problem delivery door actuator failure
2003 Hummer H2 184,000 mi,
ac blows hot even when there is freon
2004 Hummer H2 94,000 mi,
hot air on driver side cool air on passenger side
2004 Hummer H2 132,000 mi,
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 H2 90,000 mi,
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
2003 Hummer H2 150,000 mi,
The a/c turns on I can hear the compressor work but no air is blown through the duct systems. Please help
2003 Hummer H2 112,000 mi,
Same thing happen to my hammur one I replace the new battefie it it only blowing air from the defrost area......
2005 Hummer H2 135,708 mi,
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.
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 H2 156,790 mi,
AC only blowing hot air. Tried to fix it myself. Took the dash apart and found not get to the actuator above glove box and to the front and under head cross member.
2003 Hummer H2 125,000 mi,
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.
2004 Hummer H2 105,000 mi,
heater & a/c fan does not run
Air condition blows hot air out. Have to turn car on and off couple of times to fix
2005 Hummer H2 101,000 mi,
Air only blows out Defrost vents. No air out the main vents, heat or cool.