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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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#91 of 144 Same problem as everyone else! by hurleygirl_98 Mar 31, 2008 (7:55 pm)
I am so GLAD that I found this site. I have been having problems with my 2001 Grand Prix blower for awhile now (and SUFFERED this winter without any heat!) and about a month ago my heater core started leaking. I am getting the heater core replaced this week and was going to have my mechanic replace the either the blower or the resistor, but after reading this, I will definetly have him change the ignition wires! Wow, why do they have to make these cars so difficult?? However, a few days ago I stared having problems with the driver side wiper not working right, it barely wants to move, but the passenger one is working fine. Does anyone else have this problem? And if so, does it have anything to do with the ignition wires? I kinda hope it does, because then I could kill two birds with one stone!
#92 of 144 2001 GP a/c blower problems by bugshyt Apr 26, 2008 (12:55 pm)
I been have the same problems as eveyone else with this not heat no blower lights go out thing. Just changin the int. wire really work because i was about to by a new daytime lamp control module. which is about 300 bucks. can any one help me get this problem fixed. Replies to this message: treacotton (May 02, 2008 5:21 pm)
#93 of 144 A/C Blower Problems by victoryismine0 Apr 28, 2008 (6:52 pm)
Hi, ok I'm not sure if I'm having quite the same problem as everyone else. My blower never works with my car running. However if i just turn the key on, without starting the car, it works. But if i try to change the speed, it automatically kills my blower. But if i just leave it on 5, with the key just in the on position, car not running, the dam thing will run like a champ. But as soon as i try to start the car or change the speed, the climate control unit loses power, I can't even get the a/c or rear defrost light to come on when I hit the button. Oh and this is on my 01 Grand Prix GT. Can anyone please tell me if it is the ignition wires or perhaps something else? Thanks in advance. Oh and I live in phoenix and its already in the upper 90's so I can't go long without my a/c!
#94 of 144 Re: 2001 GP a/c blower problems [bugshyt] by treacotton May 02, 2008 (5:21 pm)
Replying to: bugshyt (Apr 26, 2008 12:55 pm) Hi.. I have a 2001 GTP and I WAS having the problem of AC only working on 5, computer display not working or extremely dim, daytime running lights being effected. I recently just had a private mechanic work on it and say it was fixed.. well the resister pack was burnt up and he replaced that. He replaced the blower motor and still didnt fix it so then he had a guy do a wiring diagnostic on it and said he found some wires melted or burnt. That was supposed to be fixed... before it was fixed the new resister pack got burnt up so he replaced that again. Figured the old blower motor wasnt bad so put it back in. Now my daytime running lights look ok, ac works all speeds but the computer display is still not working right. It is better than before and SOMETIMES works but most of the time it is either dim or flickering on and off. When the display flickers, I notice that the AC compressor light on the AC controls pulsates at the same time. I am fed up with the mechanic and want to get this fixed. I am hearing about people replacing "ignition wires" but I dont know what those are or how to do it. I assume your not talking about the spark plug wires cause I dont see how that would effect the computer. If anyone can send me a link or some suggestions on how to get this LAST issue resolved I would GREATLY appreciate it.
#95 of 144 heater blower relay switch by gdaines Jun 02, 2008 (8:57 pm)
I have 2001 grand prix, similar problem to many with heater/ ac blower, rear defrost, and daytime running light working sporadically. I understand that all three function through a common relay switch (not referring to the blower resistor pack). Does anyone know where this relay switch is located? Replies to this message: fluxcap (Jun 04, 2008 10:32 am) gdaines (Jun 04, 2008 8:39 pm)
#96 of 144 Re: heater blower relay switch [gdaines] by fluxcap Jun 04, 2008 (10:32 am)
Replying to: gdaines (Jun 02, 2008 8:57 pm) gdaines, see this page http://www.clubgp.com/newforum/tm.asp?m=20670&cookieCheck=895402326 Replies to this message: gdaines (Jun 04, 2008 8:39 pm)
#97 of 144 Re: heater blower relay switch [fluxcap] by gdaines Jun 04, 2008 (8:39 pm)
Replying to: fluxcap (Jun 04, 2008 10:32 am) Thanks for your help, good info.
#98 of 144 99 GP blower problem by rrogan1 Aug 11, 2008 (8:32 am)
Hey, I've looked through this thread and noticed a few problems I have. I'm just not sure if I have a problem with the ignition switch or not because I don't have many of the problems. My blower motor only turns on at 5, and I just recently replaced the blower motor resistor because it was damaged by water from the A/C I believe. Now the new resistor is acting up, and I'm thinking could be due to the ignition wires. The only thing is that I don't have problems with my running lights, or rear defroster. The clock does show weird digits sometimes though, and the rear speakers turn on and off randomly too. Do you think it's the ignition wires, or could it just be that the resistor got damaged by water again. I haven't seen any puddles in the passenger side like I did before when the old resistor died. Thanks for any help. Replies to this message: craig32 (Aug 11, 2008 12:44 pm) ssherman1 (Sep 23, 2008 5:22 am)
#99 of 144 Re: 99 GP blower problem [rrogan1] by craig32 Aug 11, 2008 (12:44 pm)
Replying to: rrogan1 (Aug 11, 2008 8:32 am) This may not solve your problem, but it may help get you on your way:    My blower gradually started failing on each of the fan settings (last1 being #5, then failed on that, too).   I still have my blower not working on my '02 grand prix, and i've done the following: put 12 volts directly to the blower equaled it was good!   I then replaced the resistor (twice, to make sure), and it was also good.   ****I then thought to ck the voltage after the resistor, going to the blower, and it read (trying it at ALL the fan settings) 6.5, to about 7 volts (=not enough for the blower to work!!).   A mechanic i spoke with said that it sounded like the voltage was 'shorting' somewhere, and that i should ck the voltage at the fuse panel.   He said if the fuse was getting 12 volts, then the short was 'after' the fuse panel (either between the switch & the panel, or the switch itself).   I mentioned this thing about others having the problem behind the steering wheel (eg, the wiring, ) & he said anything is possible.   Keep in mind, if it's in the ignition wiring, you'll have to take a lot of things apart (if it's the switch, even more!).   Consider also, the dex-cool/gasket problems (i'm selling the car!!)   *****Has anyone else taking readings & gotten low voltage after the resistor (going into the blower)???   What caused it???? Replies to this message: ssherman1 (Sep 23, 2008 5:22 am)
#100 of 144 Re: 99 GP blower problem [craig32] by ssherman1 Sep 23, 2008 (5:22 am)
Replying to: craig32 (Aug 11, 2008 12:44 pm) Had the same problem as most above on my '02 Pontiac Grand Prix GTP - blower not working, puddle in passenger side, everything else works fine. Only had to replace the blower ($90) not the resistor. Replacement not too bad with the right type and length of tools.

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