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11-21-2005, 12:55 PM
| #1 |
| Junior Member Join Date: Nov 2005
Posts: 3
 |  Dual air is only working on one side I have searched all over the internet and can't find anything or anyone that has had this problem. Last night I got in the truck and turned on the heat one side is blasting out warm air the other side cold. Doesn't matter what position, floor, defost or out the air vent it stills just blows cold air. Help!! It is cold outside. It is a 2004 Silverado cab and half. Last edited by gizzmo; 11-22-2005 at 10:00 AM. |
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11-21-2005, 10:20 PM
| #2 |
| Senior Member  Join Date: Sep 2005 Location: ALABAMA
Posts: 3,160
 | year make and model are gonna be needed to help out with diagnosis. Some heat units are vacuum controlled, others are electric. Depends on year
__________________ When i die, i dont want to walk gracefully thu the pearly gates and turn in a unused body. i want to go sliding thru sideways and turn in a body that has been completely used up. |
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11-22-2005, 10:00 AM
| #3 |
| Junior Member Join Date: Nov 2005
Posts: 3
| Thanks, forgot that part!!! |
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11-22-2005, 10:45 AM
| #4 |
| Senior Member Join Date: Sep 2005 Location: ALABAMA
Posts: 3,160
| Sounds like an air door is not opening. It shopuld be vacuum actuated on yours (Ithink) cant remember what year they switched over.
__________________ When i die, i dont want to walk gracefully thu the pearly gates and turn in a unused body. i want to go sliding thru sideways and turn in a body that has been completely used up. |
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11-23-2005, 05:26 AM
| #5 |
| Moderator  Join Date: Apr 2005 Location: Texas
Posts: 3,220
| i know up till 99 before they changed body/interior they were still vacuum. If it's any help
__________________ John Wayne 2000 F-350 7.3L Powerstroke 4x4 |
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11-26-2005, 08:15 PM
| #6 |
| Junior Member Join Date: Nov 2005
Posts: 3
| Thanks you guys are great!!! I will give it a try. |
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08-27-2006, 09:59 PM
| #7 |
| Junior Member Join Date: Aug 2006
Posts: 6
| I have the same problem but only intermittantly, if you figure it out let me know please? |
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11-20-2006, 08:53 PM
| #8 |
| Junior Member Join Date: Aug 2006
Posts: 6
| Dealer solved the same problem for me. Reprogrammed the computer that controls the system.. per some gm bulletin. Problem solved. Also a 2004. |
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11-22-2006, 03:34 PM
| #9 |
| Junior Member Join Date: Nov 2006
Posts: 5
| I also have the 2004 Silverado and had it back to the Dealer two times to be fixed.
__________________ frank |
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11-22-2006, 03:53 PM
| #10 |
| Junior Member Join Date: Nov 2006
Posts: 5
| This is from the work order on my 04 Chev. silverado... "Scanned 2 codes in system D4707 & D1811 Refered to Bull. 06-01-38-003 Reprogramed HVAC. Still noticed acctuator failure after calibration. Replaced right temp. door acctuator and all working per design."
__________________ frank |
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