Question about 2004 Pontiac Grand Prix

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Heater does'nt work

Im trying to find out where the fuse goes in the fuese panel or it might be a relay the car has manual heat and nothing work's ac or the heated seats maybe control panel bad please help

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  • hdhutson1 Dec 28, 2008

    can't find a fuse nothing work's no fan maybe no power

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If you live in a cold climate, perhaps you got water in the blower motor itself. Take off the trim piece by the passengers feet and the blower will be right there. Remove it with three screws take in the house and warm up (thaw out) let it completely dry. Reinstall and see if it works. If not, you can use a meter to see if there is power to the blower and if there is...buy a new blower. Hope this helps. p.s. i just had this happen to me and after a thaw and dry it works great. Hope this helps.

Posted on Jan 15, 2009

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If the fuses and relays are ok you will probably find its a valve in the heater matrix.

Posted on Dec 18, 2008

  • david mccaig Dec 31, 2008

    id recomend buying a haynes manuel, www.haynes.com the book will show you where every fuse and relay is and if its a common problem or not. Also if its the valve in the matrix it will show you how to the that and everything is step by step along with a difficulty rating and a list of every tool you will need for the job.

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1 Answer

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There is a relay that powers the blower motor circuit . Left I/P fuse box , do you know where that is ? The relay is IGN 3 relay .
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LF of the passenger compartment, behind the kick panel
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--
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