Question about 2003 GMC Sierra

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2003 GMC Sierra heater Blower wont shut off

My 03 gmc sierra heater blower will not shut off
The heater works fine it just wont shut off
the fuse is fine what do I do

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  • Anonymous Dec 27, 2008

    blower won't shut off

  • OLDERQT
    OLDERQT Jan 04, 2009

    mine has warm air all the time but blower won't blow gmc said i need switch replacement or disconnect battery cable 10-15 min then hook back up and try or hoses may be blocked if hoses are warm it is ok try a shot of air otherwise look for the connector part and replace that and switch next blower motor which is expensive also try a new thermostate it is cheaper fix let me know if this helps and what helped

  • Anonymous Jan 08, 2009

    2002 gmc yukon xl same problem the blower won,t sut off . i had to remove the fuse, its very cold here the NE US

  • kylesabean Jan 23, 2009

    My 2001 GMC Yukon The Airconditioner works well, But when the heater is running for a while the A/C wont kick in at all. This problem actually stoped me from selling my truck last night. Last summer I had it happen, but the next day I started my truck turned on the A/C it worked good

  • Daulb Jan 24, 2009

    blower motor for heat of A/C will not shut off even when key in not in truck. i have to insert or pull fuse every time i want the blower to run. I understand it is the relay switch but i do not know where it is. can any one help?

  • Anonymous May 01, 2009

    blower won;t shutoff

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My 2003 Sierra's blower came on by itself in the garage while I was sleeping and ran the battery completely down. I had to replace the blower switch located under the glove box next to the blower at the bottom of the right corner of the dash. The switch is in front of the blower and held in by two screws. Disconnect the two wire connections. This is a "dealer only" part and cost me 65.00. Also check the wire harness with seven wires connected to it for melted plastic. It will be marked "ABCDEFG". If it has melted, you'll need to replace it. Pay attention when reinstalling either part, that the wires "ABCDEFG" match the switch in that order.

Posted on Jan 17, 2009

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