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Pontiac Grand Prix Heater blower relay switch

144 messages,  Last post on Nov 16, 2009 at 6:26 PM

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What is this discussion about? Pontiac Grand Prix, Sedan


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#81 of 144
Re: Fan Switch, Headlights, & Heads up display [wildfan74] by mawilliz1
Nov 26, 2007 (5:06 pm)
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Replying to: wildfan74 (Nov 26, 2007 3:43 pm)

Sounds like you have a power feed problem,check the battery cable connections,also check the positive battery lead that goes from the battery to the underhood electrical center,just trace the smaller positive wire to the center,make sure its clean and tight,also check the 60A maxifuse for the headlamps,this fuse controls both headlamps and HVAC control,pull the fuse out and check for burned terminals or melting,i believe your problem is at that electrical center.
#82 of 144
Re: Fan Switch, Headlights, & Heads up display [mawilliz1] by wildfan74
Nov 27, 2007 (6:23 am)
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Replying to: mawilliz1 (Nov 26, 2007 5:06 pm)

Thank You, I will take a look at the electrical center and see if I can find anything. I have already had my mechanic look at it and he couldn't find anything that appeared to be bad, but he did clean up the ground connection and everything worked better than ever for about a half of a day, and then it all went down hill again from there. I want to think that it has something to do with the HVAC since everything else works until you want to turn on the fan, that is when the auto lights and HUD stop working immediatley and the fan still doesn't work no matter what speed you have it on.
#83 of 144
Failing powered seat 2003 GP by bizboo45
Nov 27, 2007 (7:26 am)
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Can anyone help???
My powered seat on the drivers side is stuck almost all the way forward. I'm 6'8" tall so it causes a bit of a problem while driving.
When I try to make the seat move back, only one side of the seat moves...the other side does not. Anyone know what may be causing this?
 
Anyone else who owns a GP think that the bottoms fall out of these things after about 80K miles or so? It seems like I am having one problem after another!
#84 of 144
Re: Fan Switch, Headlights, & Heads up display [wildfan74] by pugsmom
Dec 04, 2007 (6:46 am)
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Replying to: wildfan74 (Nov 27, 2007 6:23 am)

I am curious if this worked for you or if you found out what your problem was. My 2000 Grand prix is doing the same thing (heater/ac blower not working and when I turn on the heater my auto headlights do not work) and we can not find where the issue is....
#85 of 144
Re: Fan Switch, Headlights, & Heads up display [pugsmom] by appjej123
Dec 05, 2007 (1:01 pm)
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Replying to: pugsmom (Dec 04, 2007 6:46 am)

I don't have the heads up display, but replacing the ignition wires resolved all fan\auto headlights and such.
 
I took my mechanic an article from this site and he fixed it right up.
 
Should work for you as well!
#86 of 144
Re: Fan Switch, Headlights, & Heads up display [appjej123] by pugsmom
Dec 06, 2007 (11:19 am)
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Replying to: appjej123 (Dec 05, 2007 1:01 pm)

Thank you so much for the help. My dad works on cars so he is my mechanic. He couldnt figure it out and I found this site. Took him the info. He changed the ignition swutch and ...knock on wood...so far everything is working great. i am VERY happy...expecially since it is snowing and COLD and I now have heat...Thanks again!
#87 of 144
Re: Fan Switch, Headlights, & Heads up display by coneycone
Dec 07, 2007 (8:46 am)
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So I have not had heat for the past 2 months. Well, i live in Pittsburgh and well its winter time here. So here is what i have learned in researching this FAN problem.
  
If you have the issue of your Blower NOT working on speeds 1-4, this is probably your Blower resistor part. (a bit difficult to remove, but doable, price $25)
  
If you have the issue of your Blower NOT working on any speeds 1-5, this is going to be the Blower motor resistor or the Blower motor (very easy to uninstall and reinstall, price $50-$150, pending manual or automatic climate control).
  
If you have the issue of multiple things going wrong, HUD, Heated seats, Daytime running lights shutting off, rear defogger - This is most likely your Ignition Wiring ( i think the yellow and orange wires) thing that you read about on here.
  
I hope this helps, or at least saves you some diagnostic towards your problem.
#88 of 144
Re: Grand Prix 2000 GT Coupe , Heater Problem [mawilliz1] by maximka
Jan 03, 2008 (1:32 pm)
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Replying to: mawilliz1 (Nov 25, 2007 2:01 pm)

Hi,
thanks to all for your help. here is what I did and it solved the problem partially.
Originaly I had problem with heat and car not getting right temperature.
 
Here is what I did:
1 - I changed thermostat - it didn't solve anything.
2 - I went to mechanic and he proposed to change antifreeze, since mine had original one (the red one) and it is proven not to be a good one. It leaves a lot of dirt on the walls .. so I flashed old antifreeze, washed everything with water and put new green antifreeze, it solved the problem with heat. Now I get good heat for a week w/o any problem. However car still do not go to half point on the teperature bar. But, I guess it is not a huge problem.
 
3 - I have sort of new problem, samething as other describerd here. When I turn heater on headlights doesn't work, i have to turn them manualy, and also defroster doesn't work. I have to restart car for a few times, so it will start working normally. I will try the ignition wiring solution as it proposed here and let you guys know.
 
P.S. - Also as i understand it is very easy to change ignition wires, just change six wires and thats all? Does any one have any diagrams? let me know. Should I go to mechanic or I can do it myself?
 
thank you for your help.
#89 of 144
Re: Grand Prix 2000 GT Coupe , Heater Problem [maximka] by maximka
Jan 04, 2008 (8:38 am)
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Replying to: maximka (Jan 03, 2008 1:32 pm)

silly me. Just read through forum and found link with directions.
Do you think it is safe to by from GMpartsdirect?
will described GM PART # 26068757 will work for allyears of pontiac grand prix? I have pontiac grand prix 2000 GT? If not do you know part number it will work with?
 
thanks,
Maksim
#90 of 144
Re: Grand Prix 2000 GT Coupe , Heater Problem [maximka] by maximka
Jan 07, 2008 (11:06 am)
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Replying to: maximka (Jan 04, 2008 8:38 am)

Update: My mechanic changed ignition switch. He put aftermarket part.. all together with labor cost $160. For now(2 days later) it works fine and looks like problem has been fixed.

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