1998 C5 Dual Climate "mode" control
Thread Starter
7th Gear
Joined: May 2009
Posts: 7
Likes: 0
From: McDonough GA
1998 C5 Dual Climate "mode" control
My 1998 C5 with dual climate control is having problems with the "mode" control. No matter which mode I select, the blower fan blows mostly for windshield defrost. Switching to foot or passenger modes dies not change the airflow. The defroster is not selected. Any ideas?
Burning Brakes
Joined: Apr 2008
Posts: 855
Likes: 40
From: Liverpool NY
Could be your actuators are not working or out of sync or possibly lost vacumm. Do a search for resync'ing the actuators in the tech forum. For vacumm check the connector behind the intake manifold to make sure the hose is connected. There is vacumm canister is inside the right front fender near the PCM the vacumm hose runs from the manifold to their under the battery tray.
I had a similar problem and it turned out my battery leaked and destroyed the vacumm line under the battery tray. Fortunately it didn't effect the wiring harness.
I had a similar problem and it turned out my battery leaked and destroyed the vacumm line under the battery tray. Fortunately it didn't effect the wiring harness.
Thread Starter
7th Gear
Joined: May 2009
Posts: 7
Likes: 0
From: McDonough GA
Could be your actuators are not working or out of sync or possibly lost vacumm. Do a search for resync'ing the actuators in the tech forum. For vacumm check the connector behind the intake manifold to make sure the hose is connected. There is vacumm canister is inside the right front fender near the PCM the vacumm hose runs from the manifold to their under the battery tray.
I had a similar problem and it turned out my battery leaked and destroyed the vacumm line under the battery tray. Fortunately it didn't effect the wiring harness.
I had a similar problem and it turned out my battery leaked and destroyed the vacumm line under the battery tray. Fortunately it didn't effect the wiring harness.
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-----
My 1998 C5 with dual climate control is having problems with the "mode" control. No matter which mode I select, the blower fan blows mostly for windshield defrost. Switching to foot or passenger modes dies not change the airflow. The defroster is not selected. Any ideas?
http://forums.corvetteforum.com/c5-t...with-pics.html
Feel free to call if you need - 661-406-7516
Thanks,Matt
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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-----
I get the Actuator every so often still!
There is another write up on resetting the Actuators & I'll forward that later today when I get home. But your problem is the same *** mine was, the other is for when air comes out cold on the pass side & hot on driveers side. When this happens I reset the codes and the Actuator resets & all is good. I willl do the Actuator recalibration soon enough because I also want to lube my squeeky fan at times
I'm on my cell phone now so if you can you can either call me or e-mail me at madmatt9471@sbcglobal.net
Thanks,Matt
There is another write up on resetting the Actuators & I'll forward that later today when I get home. But your problem is the same *** mine was, the other is for when air comes out cold on the pass side & hot on driveers side. When this happens I reset the codes and the Actuator resets & all is good. I willl do the Actuator recalibration soon enough because I also want to lube my squeeky fan at times
I'm on my cell phone now so if you can you can either call me or e-mail me at madmatt9471@sbcglobal.net
Thanks,Matt
Thread Starter
7th Gear
Joined: May 2009
Posts: 7
Likes: 0
From: McDonough GA
The problem turned out to be a patch repair from the previous owner. Instead of replacing the tube after acid damage, he spliced in a patch. It finally came apart. That fixed the temp actuator seems to be bad. At least from the DIC code. The next fix.
Thanks to all for your assistance.
Thanks to all for your assistance.
