Question about 2003 Hummer H2

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AC BLOWER FAN STAYS ON IN MY HUMMER H2 (2003) AFTER IGNITION IS SWITCHED OFF- WHY WOULD THIS OCCUR?...

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  • RAALLEN2005 Dec 01, 2008

    NO THE DOOR BEING OPEN DOESN'T AFFECT THE FAN- IT STAYS ON

  • RAALLEN2005 Dec 02, 2008

    NO, IT NEVER GOES OFF UNTIL THE BATTERY DIES. DO YOU KNOW IF THERE IS A SEPARATE RELAY OR IF THE RELAY IS BUILT INTO THE FAN? I APPRECIATE ANY FURTHER HELP YOU CAN OFFER AND THANX FOR WHAT YOU'VE TOLD ME SO FAR!!!

  • RAALLEN2005 Dec 03, 2008

    Thanx for everyone's help but I would still like to hear more feedback if anyone can offer some.

  • KarlBrkr Feb 23, 2009

    I have that same problem. I re-ordered a new blower resistor from the Dealer back in December and I'm still waiting in February. It's on back order nationwide with no estimated delivery date. with Hummer getting ready to be axed I hope we are not screwed.

  • KarlBrkr Feb 23, 2009

    I have the same problem. I ordered a blower resistor from the dealer 2 months ago and am still waiting. It seems to be on nationwide back order. I hope we won't get screwed if H2 gets axed by GM.


  • davidkay61
    davidkay61 May 11, 2010

    Does it stop when you open the car door?

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Your blower motor resistor is bad. Needs to be replaced.

Posted on Oct 26, 2009

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When does it go off (the fan). I assume it does, sooner or later, go off? Some blowers (high-end vehicles) stay on a little longer to clear moisture, but if this just started (hasn't happened since day one) then I would assume it is a short (pray it isn't) or the blower cutoff relay/blower motor relay. If neither relay is available for that car, it could be built-in to the motor. Then, try to unhook the motor and put a tester on the connection plug going into the motor and see if you can get power with the car on, and watch it disappear once the car is turned off, that indicates it is the motor or the resistor atop the motor.

Posted on Dec 01, 2008

  • davidkay61
    davidkay61 Dec 03, 2008

    I found the blower motor at the Advance Auto Parts site, where I also found the A/C Relay. On Rockauto.com, I found the blower motor resistor connector (for something like $50), but no resistor. I am making the bold assumption here that it would be worth your time and money to go to a GM/Hummer dealer and buy the A/C relay for twice what it should cost, and ask them where it goes on the vehicle. Or, call the service department of the dealer, tell them you bought the it, now you don't know where it goes. Or, does you owners' manual show it? Your fuse box cover? I would bet the problem is that $15 part...

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