2004 Chev Impala Blower Motor

[Jason]

Blower motor not working all the time...if I bang the dash near the glove box, it comes on then works great. Is this the switch assembly, the resistor problem, or should I be replacing the blower motor?

[Don]

I took the passenger side access panel under the glove compartment off to get to my blower motor. I tap it lightly (from underneath) and my blower motor starts working. It`s usually brushes have gone bad and just need replace motor, It`s simple to replace. I had a dealership tell me it was my heater control panel and my blower resistor to the tune of $633. WRONG!!!
It will cost me $60 to buy it and do it myself (30 minutes) and the dealership didn`t EVEN find the real problem.
[e-mail]

[Jason]

Don, I also sent you an e-mail, but thank you for the information. This will save me huge $$$

[shaun]

it worked like a charm after checking all the fuses in the car and pondering on the next move I fell upon your blog.

YOu saved me time and money with just a hammer and a few taps.

It is working great now and will just ride it out till I trade it in.

Thanks for the knowledge

[Fred]

I have an 04 Impala and the same exact thing just happened to mine. Thanks for the info. I already spent $160 for a fix that didnt work. You probably saved me a bunch!! No more Chevys for me.

[Carla]

I have the same problem but i replaced the blower motor and the resister and they still don't work any suggestions for that.

[Don]

Carla wrote:

I have the same problem but i replaced the blower motor and the resister and they still don't work any suggestions for that.

Do the lights on your heater control panel light up?

[e-mail]

[Buckley77]

I am having a similar problem. I took my 04 LS through the car wash last night and as i was driving away the heater blower stopped for a moment and then came back on. Now this morning there was no blowing from the heater at all. I checked the fuses and they are fine. Any suggestions? Quickly please, I live in Ohio and it was -6 this morning, made the drive into work a bit chilly, lol. Thanks.

[Dion]

My blower is also works intermediately and the lights on the control panel does not light up is does this mean anything specific

[Jim]

I have a 2004 Impala. The blower was not blowing at a constant speed, especially at the higher settings. Based on some of the things I had read, I suspected the Blower Control Module. Contradictory to what some online auto parts places list, this is *not* a resistor. It is a module. I made the mistake of purchasing the resistor but it's not the part you need. You need a Blower Control module, and AC Delco is the only manufacturer that lists it. The AC Delco part number is 1580938. It's a small black module, about 3-4 inches wide with four holes on it. On one side is an electrical connector from the heater and power, and on the other side are 7 metal fins. It is located underneath the dashboard. You will have to pull the panel underneath the glove box to see it. It's mounted right where the carpet ends and the firewall begins, kind of where your feet are. Once you have the part, here is how to replace it.

1) As aforementioned, remove the panel underneath the glove box on the passenger side of the car. It will be hanging by a plastic screw, but you should just be able to swing the thing out of your way.

2) Locate the blower control module. The factory unit is mounted with two black "heat stakes." You will need to chisel these off with a small screwdriver and hammer.(I know, it sounds radical, but you can't get the factory part off any other way.) The heat stakes have a hole next to them on each side -- THESE HOLES WILL BE USED FOR SCREW MOUNTING ON THE REPLACEMENT UNIT.

3) Chisel and pry until the thing pops off. Remove the electrical connector as well.

4) Now for the fun part. The replacement unit will need to be screwed into place with the holes that weren't used on the factory unit. You will need two small quarter inch pan screws. Test fit the screws, and make sure they're not too long. This part of the job took the longest because it's tough getting enough clearance to screw the thing in. You can also use some seal-all or threadlocker, but it shouldn't be necessary since the screws will self tap themselves into place. Make sure it's tight.

5) Reconnect the electrical plug.

[jen]

Don wrote:

<quoted text>
Do the lights on your heater control panel light up?
[e-mail]

What do you suggest if the lights on the heater/ac control panel don't light up?

[terry]

I have 2004 impala, But mine constantly runs and the passenger zone only blows hot air. Even when everything is set to a/c.

[Patrick]

mine stopped working this morning right when I leave for work at 5am in minus 5 or so I'm thinking FML im going to have to bring it in, I starting fiddling under hood checking fuses etc, and then go online for ideas, and I tried banging right under passenger side where carper ends, and it did the truck blower is back on and working like new, thanks :)

[Patrick]

wow just finished night shift at 5am sorry for poor grammar.

[bblunt]

have an 04 impala .... get a parasitic draw on the blower motor fuse.... pull fuse draw goes away.. checked motor and seems to be fine ... ANY ideas where draw might be coming from (bad ground, looks fine )? Never buy a chevy again stick to pontiac (cant believe made by chevy way better) or imports... any ideas would be greatly appreciated

[terry]

Hi again. Does any one have any ideas as why or what is keeping my blower motor running constantly even when the ignition is turn off and the key is removed??????

[Jason]

Where abouts is the heater blower resistor located? How do I get to it?