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Originally Posted by f5fstop
Oops, I did an answer on the H3 forum without looking.
I'll say the almost the same here...
Usually when a blower motor stops working it is electrical, such as a relay, fuse, control head, blower motor control processor or the blower itself.
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Huck, you're damn right to be pissed. Start writing letters and definitely call up HUMMER. Include specific names, times and places when you do this.
F5, while your on this topic I'm going to hijack...my wife's 98 GP had speeds 1-4 on her blower fan go out several years ago. I self diagnosed this as the blower motor resistor pack. I bought the part, spend a little too much time upside down in the passenger footwell and replaced it. The film over the resistors on the original was bubbled and the board all corroded.
Two years later, same thing happened again. I handily replaced it in a third the time this time.
Well I drove her car the other day and noticed that speeds 1 and 2 are out. 3 and 4 (and 5) still work. So I'm 99.9% certain the resistor pack is croaking, AGAIN!
Any idea WTF is causing the resistor pack to fail repeatedly? Excessive moisture in there???? PM if you don't want to continue the hijack. Thanks.