Question about 2007 Hummer H3X

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HI I own a 2007 H3 Hummer and my fan blower stopped working i checked the fuse and its still ok all the lights on the knobs still work just no air comming out what could i do to fix it?is there somewhere i can download a repair guid for free?

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  • wdebaie May 31, 2010

    well i fixed it myself turned out to be a bad connection under the dash fan-blower up and running again thnx self :)

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6 Suggested Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: (06 Hummer H3) Blower not working, Clutch Keeps blowing fuse.

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

SOURCE: turn signal repair hummer h3

my computer screen is the wrong way round?

Posted on Jun 28, 2008

  • 2 Answers

SOURCE: 2006 H3 Hummer AC/Heater Fan Motor

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

  • 3 Answers

SOURCE: Hummer H3 air condition blower will not come on -

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Forgot the link!

Posted on Aug 03, 2009

  • 114 Answers

SOURCE: how do i shut off my change oil light in my h3

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

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Should be under passenger side of dash...may have to remove a cover.Check fuse for "blower" in the underhood fuse panel first before replacing.

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I had the same problem. I fix it my self. This is what you look for, is your a/c blower working when you turn the fan on. If a/c light come on but nut the blower fan. Then under passenger dash you will see orange plug. It's held in with 2 screws. Remove 2 screws and pull resistor out. Disconnect orange plug and look at orange plug and the resistor if burn need to replace the resistor and the orange connector. That's your problem. Now if your blower works but no power to a/c switch and you instrument nobles has no lights. Then it's a fuse check #48 and # 57 fuse that controls that Troy

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When i turn on the contol knob for the air conditioner it will not blow, i have a 2006 hummer h3.


It sounds like your fan is not getting power or the motor is shot.

You can check the fuse panel to see if there is a blown fuse. Your manual should be able to tell you where the fuse panel is and which fuse controls the AC fan.

If that doesn't work either the fan motor is fried and needs to be replaced or there is a wire between the control panel and the fan that is severed/shorted. If you can find the blower fan and you have a multimeter you can test the motor to see if its good. Let me know if you need any more help.

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The airconditioner only works in my 2006 H3 when the car is physically moving over 25 mph. If it is going slow or idling there is no air coming from the blower/fan. When it does blow it is only on a low...


There is a HVAC relay and FUSE in the under hood fuse box, have you check both of these? If the blower works on any speed, the blower is good. You say it blows on lowest speed? The blower speed resistor is mounted on the blower housing. The HIGH SPEED BLOWER RELAY is mounted on the blower motor. You may have multiple problems but check fuses first, if all is OK, then a qualified repair shop will need to check further. You do NOT need the whole A/C system replaced. If it does blow cold, thats good, you just need the blower working.

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It's the HVAC blower resistor in the air plenum under the glovebox. New resistor and wiring harness is about $70 at the Hummer Dealer.

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That could be the blower motor resistor or the blower motor

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