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Maintenance & Repair Climate Control Problems (Air Conditioning, Heat) - All Cars
791 messages, Last post on Aug 12, 2009 at 12:55 PM
You are in the Maintenance & Repair Forum. Your Host is mr_shiftright
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Replying to: llcooljj26 (Aug 11, 2007 8:10 pm)
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Replying to: wornout59 (Oct 05, 2007 8:36 am) Testing/Diagnostics/Checking is the first thing you should ever do. Throwing parts at it is rarely productive and most times costly. Now this is where a good information system comes in handy. AlldataDIY is something you should have before starting a repair. I know, it may sound like an advertisement, but understand that a manual does NOT give you updated information and service bulletins. That being said, there is a service bulletin about Synchronizing the passenger and driver's side. (See next post) |
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Replying to: wornout59 (Oct 05, 2007 8:36 am) Bulletin No.: 03-01-39-008 Date: June 25, 2003 INFORMATION Subject: Changes in A/C Compressor On/Off Instrument Panel Display Symbol from 2003 to 2004 Model Year and Synchronizing the Driver and Passenger Set Temperatures Models: 2003-2004 Cadillac Escalade, Escalade ESV, Escalade EXT 2003-2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe 2003-2004 GMC Denali, Denali XL, Sierra, Sierra Denali, Yukon, Yukon XL 2003-2004 HUMMER H2 with Dual Zone Automatic Climate Control (RPO CJ2) This bulletin is being issued to clarify the operation of the A/C compressor and to explain the driver and passenger set temperature operation on vehicles equipped with dual zone automatic climate control systems (RPO CJ2). Operation of A/C Compressor 2003 A/C OFF Indicator On 2003 model year vehicles, a snowflake with a slash through it is shown on the display when the A/C has been turned off (by a press of the A/C button). The A/C can be turned on by pressing the AUTO button or pressing the A/C button again. This will remove the indicator from the display. Some customers may comment about poor A/C performance after they've pressed the A/C button and see what appears to be the snowflake illuminated on the display. What has actually happened, though, is that they have disabled the operation of the A/C compressor and the snowflake symbol, upon closer inspection, has a slash through it. 2004 A/C ON Indicator On 2004 model year vehicles, the indicator will change to a snowflake (without the slash) and it will be illuminated whenever the A/C compressor operation is enabled. Driver and Passenger Set Temperature Operation The display of driver and passenger set temperature may also cause confusion. It is possible to set the left temperature control to full cold and the right temperature control to full hot with little indication on the display that the two temperatures are set differently. If the driver set temperature is set to 16°C (60°F) and the passenger set temperature is set to 32°C (90°F), the display will show the passenger set temperature for only five seconds. After that time, the display will show only the driver set temperature and a small arrow pointing left. The arrow is very important because it is the only indicator that the left and right temperatures are not equal. When both the driver and passenger set temperatures are equal, the display will have arrows pointing both left and right. With different set temperatures, it is possible to have the left temperature door flowing air through the evaporator and the right temperature door flowing air through the heater core. This may cause the overall passenger compartment temperature to not be cooled or heated as well as the customer might expect. In order to synchronize the driver and passenger temperatures, follow these steps: ^ Set the driver and passenger set temperatures to the desired temperatures, OR ^ Push and hold the AUTO button for at least four seconds to make both driver and passenger set temperatures set to the driver's set temperature. Both set temperatures can be controlled by the left temperature control knob when the zones are linked in this manner. Turning the passenger set temperature knob will "unlink" the zones again.
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Replying to: 0patience (Oct 05, 2007 3:59 pm)
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hi all, climate control help GMC Denali, when I set temp fan blows on high and doesn't slow down when temp is reached also only blows cold unless temp is set to 90 degrees, actuators zones appear to be working fine. temperature sensor? if so where is it? thanks please help dealer wants big bucks to fix.
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Replying to: biggiedave1 (Oct 07, 2007 5:11 am)
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Replying to: wornout59 (Oct 07, 2007 8:46 am) any suggestions?
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Replying to: biggiedave1 (Oct 07, 2007 11:38 am) |
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Replying to: Mr_Shiftright (Jun 11, 2005 5:27 pm)  Mr Shiftright, I have 2005 nissan sentra with the same problem. these days are kind of cold mornings, so I turned the knob to the heater, when in the afternoon tried to run the A/C by turning the knob to cold, I still get hot air. It looks like the heat/cold valve is stuck on the heat. Do you have update on your car situation, I mean did you figure it out what exactly was the problem. Thanks for any update you provide |
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Replying to: wornout59 (Oct 06, 2007 7:44 am)
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