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: 109,985 (12,259–184,000)
3 model years affected: 2003, 2004, 2005
37 people reported this problem
20 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
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2003 Hummer H2144,000
hot air blowing out the vents. No cold air will blow out.
Upvoted (16)Flag Inappropriate
2004 Hummer H2124,000
air delivery only coming out of defrost vents,problem delivery door actuator failure
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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.
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2003 Hummer H2184,000
ac blows hot even when there is freon
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Once in a while the air vent shoots out very hot air! I turn off the system once or twice to resolve it!
no air out vents
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.
2003 Hummer H274,000
drivers side stays cold passanger sid works fine just started what's the problem /
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
2003 Hummer H2153,000
Drivers side heat comes instead of cold air.
2004 Hummer H294,000
hot air on driver side cool air on passenger side
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......
2005 Hummer H2129,000
When the air conditioning is on it blows colder air out of the passengers side while the dual temperature it set on the same degrees.
It's not fixed yet, but I have a problem with my battery going dead, and the most recent time, when I got it running again the AC will only blow through the defroster and floor vents. Looking for a solution. Also, airbags keep deflating but I have the parts to fix it.
2003 Hummer H212,259
the heat was on ful l blast on half the car and the other half was cold if i set it on cold
changed battery now ac only blows out of defrost
2003 Hummer H2115,000
ac blows cold thru defrost
Air only blows on defrost mode, climate control panel works fine, just wont switch modes...defrost only.....So many problems wish I never have bought it =(
2004 Hummer H245,000
Defrost vent would work instead of the floor heater vent.
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