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Pontiac Grand Prix Heater blower relay switch

140 messages,  Last post on Oct 14, 2009 at 7:41 AM

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#131 of 140 2002 Pontiac Grand prix heater motor by tibone65 Jul 03, 2009 (10:52 am)
When I try to turn on the heater and a/c fan there is now fan turning on, he heater motor wasn't making any weird noises before the fan wouldn't turn on. Could it be the switch or what?!
#132 of 140 2002 Pontiac Grand prix radio display screen light by tibone65 Jul 03, 2009 (10:55 am)
On radio display screen there is no light coming on at any time. Before it totally quite it would only work some of the time, like when the car what first started it would not come on but soon after started it would work!
#133 of 140 No blower motor working by segrandprix Jul 03, 2009 (12:16 pm)
I would say that the ristor pack by the blower motor and the blower motor needs to be replaced. Check to see if you can get one at the junk yard. If you have the money get a new one, should be like 110 to 70 dollars for blower motor and 30 dollars for ristor pack. I got mine at junk yard for 30 dollars.
#134 of 140 grand prix heater controls by mikey52 Jul 11, 2009 (10:24 am)
I've made many repairs to my 2001. The knob on the right that controls heat, vent, ac, etc., broke. I got a new one. It now turns, but the settings don't change. It stays on the heat/defog combo (I think). I've already replaced the ignition switch and the AC ristor. (If that's what it's called.) I don't know if this forum is appropriate for the following comment. This Grand Prix is one big piece of junk. The second worst vehicle I have ever owned. (Plymouth Voyager being the first)
#135 of 140 More heater and blower motor problems by shaun63 Jul 14, 2009 (5:48 pm)
I have a 04 GTP with a heat problem and a blower motor problem. this past winter the heat got to where it wouldn't get hot at first it was once in a while now its luke warm at best but coolant level is fine, and temp gauge says engine temp is normal. Now the blower problem Started slowly once in a while blower motor wouldn't come on found that hitting the dash near heater control seemed to work to get it to come on for a while now nothing. I read the other post about the ignition wiring does that still apply on 04 models or should I be looking else where Replies to this message: baskingcroc (Jul 29, 2009 6:26 pm) beamer22 (Aug 20, 2009 8:18 pm) lordelin (Oct 14, 2009 7:41 am)
#136 of 140 Re: More heater and blower motor problems [shaun63] by baskingcroc Jul 29, 2009 (6:26 pm)
Replying to: shaun63 (Jul 14, 2009 5:48 pm) 2001 gp 3.1, 1-4 ac/heater not working lights would turn off at 1-4 .    replaced ignition switch. ALL was good. Also key still gets stuck when you turn the car off but i just stick a small l wrench in there and its lets the key go. Replies to this message: beamer22 (Aug 20, 2009 8:18 pm) lordelin (Oct 14, 2009 7:41 am)
#137 of 140 Re: More heater and blower motor problems [baskingcroc] by beamer22 Aug 20, 2009 (8:18 pm)
Replying to: baskingcroc (Jul 29, 2009 6:26 pm) Shaun, I had this problem also but the warranty worked after 9 visits and they replaced the ignition and the linkages from the floor shifter to the locking steering wheel and the the locking ignition switch. I have a friend with a 99 SE and he carrys a screw driver to hold back the locking mechanism when he starts it. I recently took my 2001 Grand Prix in for the latest recall as they are concerned that an engine fire may occur due to leaking head gaskets, when I got it back and started it up the fan and A/C,DRL and the climate control all worked, first time in a year. I turned the fan down from level 5 and everything went back to where it was, broken. I turned off the vehicle and reset everything to the way it was and everything worked again until I turned down the blower. I can now replicate the problem, which is a bonus I guess as the dealer told me it was the blower control module. I am leaning more and more toward what Christy has been saying that it is the ignition switch. I am going to try this myself and see what happens as I have nothing to lose except money going to the dealership to go through their process of 1 thing at a time as I pay for it all. Shut off your vehicle, turn the the heater controls to the hottest setting with the blower in speed 5. Start the vehicle first to check and see if your blower works, if it does then set the temperature control levers to cool and test your A/C. It's great until you turn down the fan speed below 5 and everything shuts off. Try and replicate this problem. Maybe everyone else with this problem should try it and let me know. I will post if this ignition switch fixes the problem for me.
#138 of 140 Loosing faith by the_bogner Oct 08, 2009 (9:23 pm)
Ive been reading alot on all the Grand Prix problems and im havin about all of them. first settings 1&2 didnt work on blower switch, radiodisplay freak out, then key sticks in ignition, then passanger side water leak, then blower failure...   The problem Ive had that no one else seems to is that the blower came back on, and wont shut off even with the ignition off, its constant hot now. Think this all would be fixed by the "Ignition wire fix?" The main prob with the blower followed right after the water leak began   this and numerous little things have me ready to drive this damn car into a bridge emparkment. Any help would be greatly apriciated. If not ill shortly have a 97 GTP parts car available soon...
#139 of 140 Ignition Wire causes lots of stuff by elfrieda Oct 09, 2009 (7:08 am)
The ignition wire in my GP had started shorting out my CD, radio, blower, can cause lots of problems associated with your dashboard. After I replaced it; the Blower, AC/Heater worked, but had to get new Radio/CD. Seems it connects to alot. Who would have thought?
#140 of 140 Re: More heater and blower motor problems [baskingcroc] by lordelin Oct 14, 2009 (7:41 am)
Replying to: baskingcroc (Jul 29, 2009 6:26 pm) I am having problems with the heater blower on my 2002 GP GT. When I start the car the headlights and the trip computer display will come on. However when I turn on the fan for the heater/AC the headlights and trip computer go out and the fan doesn't come on. What do i need to do to fix this. it started out as an intermittent problem but is now pretty much all the time.

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