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Pontiac Grand Prix Climate Control/AC

192 messages,  Last post on Oct 07, 2009 at 12:19 PM

You are in the Pontiac Grand Prix Forum. Your Hosts are pat & karens

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


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#123 of 192
Same Problems? by iansme1979
Jun 29, 2007 (9:59 am)
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I have experienced the blower motor stayin on in My 04 GP GT2. When the dealer pulled out the blower motor resistor and connected the new blwer motor resistor it did not change anything. However once he actually screwed the resistor back in and fully installed it,the blower motor shut down. If you are changing it make sure you screw it back into place. That I guess grounds it out. If you plug it in and try it as the wires are hanging out it prolly still wont work. As far as the A/C switch coming on all the time, mine doesnt, If I leave the A/C on when I shut off the car its on when I get in, If its off when I shut off the car its off when I get in, of course due to the issues with the blower unit I shut my fan off all the way when I turn off the car so that when I turn the car on, my heater unit isnt doing anything either way. In my '03 Trailblazer as well as my brothers Impala SS The condensor light would come on almost all the time when the auto climate control was turned on however the condenser was not running, My dealer said this was a way to know that the auto climate control is acutally on and if the temp rises the compresser would kick on when needed however shutting that off would stop the compressor from coming on at all. I just cant believe how many people would let this drive them insane. I can think of many other issues Ive had with other vehicles like my 01 Lincoln LS that always went to driver setting 2 (with driver setting two no longer being programmable) no matter what key you used and continuously smashed me into the steering wheel, moved my mirrors, steering wheel, and Climate control around and switched the stereo channels to a ghost person because I never set up driver two settings, and that was "unfixable" according to Lincoln without changing a 750.00 transistor, be glad you can "fix" it by pushing a button.
#124 of 192
Re: blower [iansme1979] by dascmj
Jun 29, 2007 (11:01 am)
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Replying to: iansme1979 (Jun 29, 2007 9:29 am)

thanks man I will try that
#126 of 192
how do I check A/C freon on '98 Grand Prix? by jonsin
Jul 02, 2007 (4:48 pm)
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Which service port should I use to check the freon pressure? Is it the one next to the firewall in the middle, or the one closer to the front of the car?
#127 of 192
drivers side hot pssngr side cold???? by chad8
Jul 16, 2007 (7:52 pm)
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2000 grand prix w/dual climate control...the drivers side blows hot air and the passenger side is good and cold. is there a damper or vacum line somewhere that i need to check or is it something else
#128 of 192
My fan switch quit working 2000 grand prix by geezer7
Aug 05, 2007 (10:04 pm)
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The switch that controls the fan inside the car does not work,i check the fuse,its fine.I hear the a/c compressor engaging.but,no air comes through the vents.
#129 of 192
Re: drivers side hot pssngr side cold???? [chad8] by chad8
Aug 07, 2007 (4:08 am)
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Replying to: chad8 (Jul 16, 2007 7:52 pm)

i have gotten no response on this problem, but i did find out on my own that the dual climate control is operated by two seperate motors that control the dampers in this car....another thing to make sure and check if u have this problem even if u don't think u need to is to check freon because the set up on the vents on grand prix will blow cold on pssngr side and hot on driver's side if it is low.
#130 of 192
Low pressure port on air conditioning by msafrit
Aug 15, 2007 (4:20 pm)
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I have a 98 Grand prix gt with the 3800 v6. I would like to add some compressor oil but cannot find the low pressure port. Can someone let me know where it is at. Thanks for all the help..Marty
#131 of 192
Re: drivers side hot pssngr side cold???? [chad8] by buckeye1872
Aug 27, 2007 (7:08 am)
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Replying to: chad8 (Aug 07, 2007 4:08 am)

wondering if you have fixed problem? did you have to replace one of the motors? I had the freon re charged so i should be good to go as far as that is concerned. thx
#132 of 192
Re: drivers side hot pssngr side cold???? [buckeye1872] by chad8
Aug 27, 2007 (11:03 am)
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Replying to: buckeye1872 (Aug 27, 2007 7:08 am)

i did not have to replace the motor(s) i had charged my ac about two weeks prior to this problem and thought that the motors were the problem but ended up i had a hell of a leak on the high side, i recharged the system along with a stop leak additive and so far so good....hopefully i make it through the end of the hot weather

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