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Pontiac Grand Prix AC/Heater Fan issue

39 messages,  Last post on May 19, 2013 at 6:49 AM

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What is this discussion about? Pontiac Grand Prix, Heating / Cooling, Sedan

    

Messages Page 4 of 5

#23 of 39 where can I get a wiring harness by emarker

Jan 17, 2012 (1:09 pm)

I am still having the same A/c issues as before and I would like to know where to get a wiring harness for a 2005 Pontiac Grand Prix. I replaced the blower motor resistor, but I think I fried the wiring harness when the initial problem happened, hence the smoke in the vents. Can someone help me? I know my way around a car pretty well. I also need an instruction manual.
 
Thank you

#24 of 39 a/c heater staying on by leena110

Mar 22, 2012 (9:26 am)

Did anyone sever find the solution for the a/c heater staying on after car is off? I've tried everything except ignition switch.

#25 of 39 1998 Pontiac GP GT AC/Heater Problems by chica85bb

Apr 23, 2012 (1:21 am)

I have a 1998 Pontiac Grand Prix GT and I have read a lot of discussions about AC/Heater issues from various websites. I have yet to find one issue similar to mine current problem or maybe I just didn't look hard enough. Anyways when I have my heater on the driver side vents blow out cold air including the floor ones and my passenger side heat works fine. When I have the AC on the driver side works great and the passenger side blows out hot air like as if the heater was turned on high. I have played with the temperature settings to see if I can get it to work even a little but had no luck. The weird thing is sometimes by chance the heater will work fine on both sides but this is rare. I don't know if this information matters but I had my AC recharged and a couple of months later my AC/Heater problems arose.

#26 of 39 Fan turning off and on by bobbi209

Jul 23, 2012 (3:07 pm)

I have a 2004 pontiac gp. In recent months the internal fan has been acting up. It will turn off and on on its own and stubbornly refuses most of my coaxing. I have taken it into a mechanic as I dont have the ability to repair it myself at the moment but they keep giving me conflicting reports about what the problem is. So far I have been quoted at 50 dollars for a small fill up of coolant which I was told is not very low and no leak. Then I was told by the same mechanic that it was all my fans and my car would become damaged if i didnt fork over 400-900 dollars for a full repair. I sadly had to burst his bubble on that fact since I know the engine fan works fine as I can check it for myself without removing the dang dashboard. Then yet again was quoted 300 dollars to check the resistor which is now what he swears the problem is. All this after he has ran a diag on it. Is there anyway to get to the resistor under the glovebox without pulling the dash? I do not own a repair manual for this car yet so any help locating it would be awesome! thanks

#27 of 39 Re: 1998 Pontiac GP GT AC/Heater Problems [chica85bb] by tinindian

Jul 26, 2012 (7:30 pm)

Replying to: chica85bb (Apr 23, 2012 1:21 am)
your problem may not be your wiring, or your blower motor... it sounds like it's in the vent flap system. Your car is new enough to have that system electronically controlled (as on a 1993 Dodge Intrepid I once owned) It may need a simple calibration. On the Dodge you pressed and held three buttons at once (or some similar act) and the vent doors cycled through all their full open / closed positions. It's like calibrating a joy stick on a computer. You set the range of motion of the doors so they know where they're sitting.

#28 of 39 Musty smell by honchobob

Sep 19, 2012 (10:27 pm)

I have a 2006 Grand prix. It has a musty smell from time to time. I know the A/C has a drain tube some where, but I can not find it. My 2000 GP had the typical rubber elbow on the fire wall and I could see it and maintain it from under the car. Can someone shed some light on this? Where exactly is the drain for the A/C on an 06, and is there any other things I should check regarding the odor. My car is not at all wet inside, cabin or trunk! Thanks for listening.

#29 of 39 2004 Pontiac Grand Prix by ponman

Nov 11, 2012 (8:15 am)

My fan does not kick in when Heater /Ac is on, Both AC and heater kick in but no fan, While i drive the car and if i hit enough bumps then the fan comes on, If i turn the dial when the fan is working only high and low settings work,

#30 of 39 blower motor resistor or switch? by gregg204

Nov 16, 2012 (7:36 pm)

I have a 05 grand prix and my heat stopped working on all speeds then it kicked back in then stopped for good i get a reading on the resistor when i put the battery tester to it iam having troubles finding a spot for the battery tester. also could it be the fuse or the switch?

#31 of 39 heater problem 2002 grand prix by marioo

Dec 30, 2012 (6:40 pm)

I have a grand prix 2002....the heater used to work only at 5 level...afther a while it stop working at all...i already. Change. The blower resistor and it still dont work...what could be the proble??

#32 of 39 Re: Musty smell [honchobob] by kenziemacey01

Dec 31, 2012 (7:03 am)

Replying to: honchobob (Sep 19, 2012 10:27 pm)
I have a 2004 Grand Prix and I was experiencing the exact same problem. I did some research and found out that there is a cabin air filter on the passenger side. You have to go under the hood to change it. Once we changed the cabin air filter (different from the engine air filter) the smell went away.

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