Question about Chevrolet TrailBlazer

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2006 Trailblazer AC fan

Fan will not come on in any position but all fuses look good - what do i check next? relay??? - dropped glove box but not sure what to look for

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  • bt2818 May 10, 2009

    Thanks - ended up being the ground (Black) lead to the fan connector - it was not grounded. After I did the simple test of putting 12 volts and ground to fan and it worked, I tested outout from switch and got different voltages, etc etc thanks again saved me some dollars

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  • Master
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I believe you must be talking about the inside blower fan tht is not coming 'on'.
It could be the switch tht operates the fan, remove the switch and check for live wire if theres current over there, if theres current thn operate the switch and check other ports for continuity of the current flow.
Its better first though to check the fan itself, it could be faulty or jammed or the brushes wornout.Remove the fan and you can test it out with the help of the car battery and two pieces of wire one to + and the to - , if the fan works thn you will have to proceed further as mentioned above.
Hope this helps.

Posted on May 10, 2009

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SOURCE: 2006 Trailblazer AC fan

chk fan speed resistors in evaporator houding under the hood where the blower is mounted. Tewo scewa hold them in You can see the wires.

Posted on May 28, 2009

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2006 Trailblazer AC fan


chk fan speed resistors in evaporator houding under the hood where the blower is mounted. Tewo scewa hold them in You can see the wires.

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