Question about 2003 Pontiac Grand Am

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1-4 fan speed doesn't work on '03 grand am - 2003 Pontiac Grand Am

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The resistor pack is probably burnt up. It is located under the passenger side dash to the left of the blower motor housing. I believe it has 2 or 3 screws and has a wiring harness clipped into it. Remove and replace it and that should fix your problem. The resistor pack is about $20 from Autozone.

Posted on Jan 21, 2011

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Please see my tip at http://www.fixya.com/cars/r6234839-doesn_t_heater_or_air_conditioner_blow . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

Posted on Oct 15, 2010

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1 Answer

I have a Pontiac grand am 2004 model and the heater/AC doesn't start blowing until I turn the fan speed up to 4 on the dial what would cause this and how can I fix it?


In most cases it's the blower motor resistor. Below is a diagram of its location, the plug and how to remove it. Looking at the picture of the plug you will want to turn the fan switch to different settings (the ones that don't work as well) and if you are geting power to each of those conections at the plug but the blower motor isn't turning on, this will be your problem. If you are not geting power at the different speeds then it is either the switch or the wiring but like I said the blower motor resistor is common to go. I hope this helps and good luck.

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Nov 05, 2011 | 2004 Pontiac Grand Am

1 Answer

The fan on my 2004 Grand Prix quit working 2 weeks ago. Checked fuses and that doesn't seem to be the problem. Any ideas?


if its the cooling fan at the rad then your talking about then if you disconnect the plug on the fan and run jumper wires to it directly from the battery it should run.also check the plug connection to make sure its in good condition and no corrosion.if you jump the fan motor and it doesn`t run tap the motor it should run either way if it doesn`t then the cooling fan motor needs replacing.

Nov 03, 2011 | 2004 Pontiac Grand Prix

1 Answer

I have to turn my heat and air conditioner knob up on5 to feel any heat or air is it the blower or selector knob 03 chevy avalanche


  • If the fan does not work at all on the lower speeds than the most likely problem is a bad blower motor resistor.

  • I can give you some pointers on checking if you need it.

May 25, 2011 | 2006 Pontiac Grand Prix

1 Answer

1-4 fan speed doesn't work on '03 grand am, but 5 fan speed does. what do I replace?


I would replace the blower motor resistor. It varies the power to the fan, for different fan speeds.

May 06, 2010 | 2003 Pontiac Grand Am

1 Answer

2000 grand marquis blower fan stops on lower speeds


there is a resistor for the fan motor which works the lower speeds, you need to replace that, it is normally located near the blower motor, got 3-6 wires plugged in it

Jun 28, 2009 | 1993 Mercury Grand Marquis

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2000 grand prix fan speed


i have been having that same exact problem with my 2002 grand prix for over a year now, and when my ac is on the lower setting the it doesnt work plus the headlights and lights on my dash go out. On Max everything works. i changed the blower resistor(about $35), still doesnt work. i changed all relays and fuses related to the ac, still doesnt work. i changed out the actual ac control switch in the dash, still doesnt work. i have changed everything but the blower motor and have asked every mechanic and auto parts retailer i come across and no one knows the answer. The best answer i got is that it is probably a wiring problem like a short somewhere.

May 28, 2009 | 2000 Pontiac Grand Prix

1 Answer

Heater fan will not shut off runs all the time on high speed. 03 dodge grand caravan


Sounds like resistor is faulty. I believe on that vehicle, look up under dash behind glove box, and you should see blower & the harness that runs from it to a resistor attached to housing/duct. Pull connector off to stop blower. Replace resistor.

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Thats a bad fan switch
as you stated it works at lower speed....
replace the switch
LB

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