AC Temp will not change
Thread Starter
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Joined: Sep 2006
Posts: 99
Likes: 0
From: Berrien Springs Michigan
AC Temp will not change
I have a 1999 C-5 with dual climate zone. I can not change the temperatue or turn the HVAC off with the "off" button. I can use the AC button and it will shut off the compressor only. Has this happened to anyone else? Everything else works great. Help!!!!! Also I can adjust the fan speed, and the vents. 
Last edited by mike10626; Jul 4, 2008 at 12:02 PM.
Burning Brakes
Joined: Dec 2003
Posts: 1,066
Likes: 9
From: Eddy Texas
Gremlins!!!!
Try pulling fuse #27 in the passenger footwell. Leave it out for 60 seconds before you put it back. That will make the HVAC controller reset, it may or may not help. If not, you may have a problem with the controller.
Try pulling fuse #27 in the passenger footwell. Leave it out for 60 seconds before you put it back. That will make the HVAC controller reset, it may or may not help. If not, you may have a problem with the controller.
Team Owner
Joined: May 2006
Posts: 21,473
Likes: 356
From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
This is what I was going to suggest but since you have done it do the fuse pull and see if it resets.
I have had a problem when it was cold on one side and hot on the other and this trick worked well 
Thanks,Matt
I have had a problem when it was cold on one side and hot on the other
and this trick worked well Thanks,Matt
Burning Brakes
Joined: Dec 2003
Posts: 1,066
Likes: 9
From: Eddy Texas
Probably a bad controller. There is a place to send it for a rebuild, contact
digitalguy_1@charter.net.
Last I heard it was around $50-$75 for repairs.
There is also a DIY to repair bad solder joints on the circuit board. However, that may not be your problem. I would suggest contacting the above email to see what your options are.
FWIW, here's the DIY:
http://forums.corvetteforum.com/show...dim%20display?
digitalguy_1@charter.net.
Last I heard it was around $50-$75 for repairs.
There is also a DIY to repair bad solder joints on the circuit board. However, that may not be your problem. I would suggest contacting the above email to see what your options are.
FWIW, here's the DIY:
http://forums.corvetteforum.com/show...dim%20display?
Drifting
Joined: Jun 2006
Posts: 1,360
Likes: 1
From: West Grove Pa
Probably a bad controller. There is a place to send it for a rebuild, contact
digitalguy_1@charter.net.
Last I heard it was around $50-$75 for repairs.
There is also a DIY to repair bad solder joints on the circuit board. However, that may not be your problem. I would suggest contacting the above email to see what your options are.
FWIW, here's the DIY:
http://forums.corvetteforum.com/show...dim%20display?
digitalguy_1@charter.net.
Last I heard it was around $50-$75 for repairs.
There is also a DIY to repair bad solder joints on the circuit board. However, that may not be your problem. I would suggest contacting the above email to see what your options are.
FWIW, here's the DIY:
http://forums.corvetteforum.com/show...dim%20display?
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