Last post on Dec 10, 2013 at 11:51 AM
You are in the Pontiac Grand Prix
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Pontiac Grand Prix, Heating / Cooling, Sedan
#11 of 45 Re: 2001 Pontiac Grand Prix fan won't shut off! [bmsmith7499]
Oct 21, 2011 (6:32 pm)
bmsmith, I've got a 2002 Grand Prix. My fan is staying on too. Were you ever able to find a solution to this problem?
#12 of 45 2005 pontiac grand prix a/c problems
Oct 24, 2011 (4:55 am)
I have a 2005 pontiac and after I had smoke fill the inside cabin because the fuse blew, I replaced the blower motor and resistor. That worked for about 2-3 weeks and then blew just last week. No smoke this time. I can hear the compressor and other parts turning on underneath the hood, and there is a little air flow and its very cold, but nothing more. I'm not sure if its a short in the wiring, bad parts, or the a/c cluster on the dashboard, but something isn't right. Any ideas?
#13 of 45 Re: 05 grand prix ac/heat problem [bimmerman94]
Nov 15, 2011 (9:09 am)
Did you ever find out what was causing the intermittent behavior? I have the exact same problem now!
#14 of 45 Re: 05 grand prix ac/heat problem [grumh]
Nov 16, 2011 (5:17 am)
Grumh (and bimmerman94),
Thanks for posting, and I'm sorry to hear about this concern you're having with the HVAC. We can look We can look into the situation further (see if any recalls are associated to your vehicle specifically/help you work with a dealership towards resolving this concern). Please email us with your name/user name, contact information, the last 8 of your VIN, and your involved dealership.
GM Customer Service
#15 of 45 2006 Grand Prix - fan not shutting off when car is off
Nov 18, 2011 (8:16 am)
Somebody please help me! My 2006 Grand Prix started giving me some problems last winter. It would blow air, but not get very hot. I let it go because I didn't want to deal with it. This summer on a hot day, the fan wouldn't even turn on for most of the day. Finally, it started blowing nice cold air. This happened sparatically throughout the summer. Now we are back to winter and it's the same thing....not getting hot air. But now I have a new exciting issue. The blower won't shut off even when the car is off. I unplugged the battery over night once and the problem seemed to be fixed for a little while. I made the mistake of turning the heater back on and now same issue....won't shut off. Killed my battery last night. I need some good solid advice. I want it fixed right the first time. I've heard so far I need to replace blower motor, then resistor, or try the relay. No one has a straight answer. ADVISE????
Nov 24, 2011 (6:55 pm)
2000 Mercury Grand Marquis. Heater blower stopped working. The blower motor control module is probally bad but son does not have money to replace it. The EATC is OK. Can I go out to the blower motor and tap into the wires and run a new resistant switch into car and bypass the blower motor control module. When car is running you can turn on heat and place on defrost and you can feel warm air coming out just no blower to blow it out.
#17 of 45 Re: 2006 Grand Prix - fan not shutting off when car is off [tarah88]
Nov 25, 2011 (7:13 am)
I'm sorry to hear about the concerns you're having with your HVAC, especially as colder weather is rolling in. Have you been working with a dealership already?
GM Customer Service
#18 of 45 Re: 2006 Grand Prix - fan not shutting off when car is off [tarah88]
Nov 25, 2011 (9:18 am)
Similar Problems with 2007 Pontiac Grand Prix Heater / AC. This past summer the A/C worked but sporadically it would act like the blower was not working and shut off then come back on when it was 113 degrees outside. Then this fall it acted like no heat when I first tried the heater. Now we are nearing December and the defroster on both sides blows cold air no heat at all and after about 20-30 minutes the heater may blow a little warm air out the front vents only. But then if I turn on the defroster it is cold again. Any suggestions?
#19 of 45 Re: 2006 Grand Prix - fan not shutting off when car is off [gporter2]
Nov 25, 2011 (10:23 am)
I'm sorry to hear about your HVAC concern, especially as cooler weather is rolling in. Have you worked with a dealership already towards resolving this?
GM Customer Service
#20 of 45 Re: 2006 Grand Prix - fan not shutting off when car is off [tarah88]
by MrShift@Edmunds HOST
Dec 01, 2011 (8:29 am)
This is a common problem and my research indicates that in *most* cases (no promises here), replacing the resistor under the glove box will fix the problem.
HOWEVER, there are reports that this resistor goes back on occasion because of water leaking onto it from a bad windshield seal, so you should check to see if the resistor is full of corrosion from water damage---if so, you have TWO problems to fix, or you'll be back under there soon enough.