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Pontiac Grand Prix Climate Control/AC

194 messages,  Last post on Jan 12, 2010 at 7:17 AM

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

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#127 of 194 drivers side hot pssngr side cold???? by chad8 Jul 16, 2007 (8:52 pm)
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 Replies to this message: chad8 (Aug 07, 2007 5:08 am) buckeye1872 (Aug 27, 2007 8:08 am) chad8 (Aug 27, 2007 12:03 pm)
#128 of 194 My fan switch quit working 2000 grand prix by geezer7 Aug 05, 2007 (11:04 pm)
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 194 Re: drivers side hot pssngr side cold???? [chad8] by chad8 Aug 07, 2007 (5:08 am)
Replying to: chad8 (Jul 16, 2007 8:52 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. Replies to this message: buckeye1872 (Aug 27, 2007 8:08 am) chad8 (Aug 27, 2007 12:03 pm)
#130 of 194 Low pressure port on air conditioning by msafrit Aug 15, 2007 (5:20 pm)
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 194 Re: drivers side hot pssngr side cold???? [chad8] by buckeye1872 Aug 27, 2007 (8:08 am)
Replying to: chad8 (Aug 07, 2007 5:08 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 Replies to this message: chad8 (Aug 27, 2007 12:03 pm)
#132 of 194 Re: drivers side hot pssngr side cold???? [buckeye1872] by chad8 Aug 27, 2007 (12:03 pm)
Replying to: buckeye1872 (Aug 27, 2007 8:08 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
#133 of 194 Dual Climate Control by boez03gt Aug 31, 2007 (9:49 am)
I have an '03 GT with dual climate control (2 vertical levers). With the AC on, warm air comes out of the passenger side vents. When I move the passenger side lever up & down it starts blowing cold air again. Lately it takes a few tries & only lasts a couple minutes before the warm air returns. Any ideas on what's wrong?
#134 of 194 driver side a/c fine, passenger side hot air by kgnpeny Sep 08, 2007 (3:57 pm)
98 grand prix gt, 3800 v6, 130k miles, electronic duel climate control. I have the opposite problem as posted by chad8, a/c works fine on drivers side but hot air coming from the passenger vents. I'll be replacing the ambient air sensor mounted inside the front bumper as the readout for actual air temp is all over the place but the system tracks the readout correctly once it settles down, except for the hot air blowing on the passenger side. Last winter the climate control system/vent controls was making all sorts of hissing noises, as if adjusting itself constantly but more or less everything worked correctly (defrost settings, etc). I would appeciate any suggestions on what might be the cause of this problem. Thanks! Replies to this message: chad8 (Sep 10, 2007 7:58 am) kgnpeny (Sep 12, 2007 4:25 pm) buckeye1872 (Sep 12, 2007 7:16 pm) kgnpeny (Oct 03, 2007 3:29 pm)
#135 of 194 Re: driver side a/c fine, passenger side hot air [kgnpeny] by chad8 Sep 10, 2007 (7:58 am)
Replying to: kgnpeny (Sep 08, 2007 3:57 pm) there are two motors which control the dampers on your system...I would first stick a thermometer in the vent and play around w/the temp controls and make sure it doesn't fluctuate one way or the other...if it doesn't, I would check the motor first. Replies to this message: kgnpeny (Sep 12, 2007 4:25 pm) buckeye1872 (Sep 12, 2007 7:16 pm)
#136 of 194 Re: driver side a/c fine, passenger side hot air [chad8] by kgnpeny Sep 12, 2007 (4:25 pm)
Replying to: chad8 (Sep 10, 2007 7:58 am) Thanks for the reply and suggestions. By the way. replacing the ambient air temp sensor fixed the problem of erractic temperature readings. I'm really hesitent to take apart the dashboard to check/replace the passenger side air damper control motor, have read it can be a nightmare(lost retaining clips, etc)and difficult to get into the guts of the dash to get at the motor. Truth or fiction? Anyone have experience with replacing the motor? Any hints/tips would be helpfull, thanks. Replies to this message: buckeye1872 (Sep 12, 2007 7:16 pm)

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