Question about 2007 Hummer H3X
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Posted on Jan 02, 2017
I brought my 2006 H3 in to the dealer for the same thing. My blower stopped working all together but it started as an intermittent problem. He said he had to replaced a diode or resistor either behind the switch on the dash that controls the fan or on the fan motor itself. Have not had a problem since but that was only about 4 months ago.
Posted on Apr 09, 2009
I'm not 100% on this but I think it's like a lot of GM's; turn the key to the "on" position(not running), stomp the gas pedal to the floor 3 times within 5 seconds & the light should flash & go out.
Posted on Sep 24, 2009
SOURCE: 2006 H3 Hummer fan problem
Hi if your internal fan not work in any position well i fixed up myself easy and save your money.
locate the fan motor air just outside right courtesy drawn document in front of passenger. go from down and look up you will see a motor with a big connector white with 2 screw secure inside the motor block. loose the two screws and pull out gently the connector from motor fan block. you will see a green multiresistor connected with this big connector. Usually the first + voltage connector is burnet out. disconnect the connector pull from resistor and check for any burn. in my case the first pin was burned out completely
you can buy another connector or you can clean the burned connector take out form connector weld a small copper cable of 5 mm dia from resistor to the burn cable and reconnect the connector without buy a new one. after replace again the resistor in the hole of motor blow with the 2 screw.
Done all work again without buy another new connector.
Gabriel from Italy Turin
H3 hummer 2007
loveling one and Humvee owner
Posted on Jun 11, 2010
I assume you've fixed this already given that nearly a year has passer by, but if others experience this, it may help them. Under the dashboard on the passenger side there is a Fan Blower resistor attached to a red connector with 5-7 colored wires. Its held in by two simple screws. Disconnect the connector and inspect it for any burn marks(usually the last orange wire at the end). If this is discolored go to the nearest GM dealer and by about $70 worth of parts. The blower resistor, the red harness connector and the clips that go into the connector. Job takes under an hour and would be rated at novice-intermediate. Advice: set the passenger chair back as far as possible. Remove the harness clips carefully so as not to break them. For more workspace you can easily pull out the plastic facia on the right hand side, it easily slips out from under the foot rail, do not be intimidated there are no hidden screws. There is also a relay down there; a small black box held in by one screw, you might as well change this while you're down there. A dealer may charge as much as $400 for this simple fix!
Posted on Jul 19, 2010
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