Defrost
09-11-2014, 11:23 PM
#1
Instructor
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Member Since: Jun 2005
Location: Brandon Ms
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Defrost
2005 C6 - The A/C blows cold and through the vents as it should. I push
the defrost button and the air moves to the floor board and not
to the defrost vent on top of the dash. I push the defrost button again and it circulates back to the A/C vent. In the mornings while running the A/C, it will cause moisture on the outside of the windshield in front of the defrost vent. Does anyone know what would cause the defrost not to work?
I would appreciate any help on this.
the defrost button and the air moves to the floor board and not
to the defrost vent on top of the dash. I push the defrost button again and it circulates back to the A/C vent. In the mornings while running the A/C, it will cause moisture on the outside of the windshield in front of the defrost vent. Does anyone know what would cause the defrost not to work?
I would appreciate any help on this.
07-11-2015, 09:35 AM
#2
Burning Brakes
2005 C6 - The A/C blows cold and through the vents as it should. I push
the defrost button and the air moves to the floor board and not
to the defrost vent on top of the dash. I push the defrost button again and it circulates back to the A/C vent. In the mornings while running the A/C, it will cause moisture on the outside of the windshield in front of the defrost vent. Does anyone know what would cause the defrost not to work?
I would appreciate any help on this.
the defrost button and the air moves to the floor board and not
to the defrost vent on top of the dash. I push the defrost button again and it circulates back to the A/C vent. In the mornings while running the A/C, it will cause moisture on the outside of the windshield in front of the defrost vent. Does anyone know what would cause the defrost not to work?
I would appreciate any help on this.
Old thread. Mine just started doing this too. The air would also go warm/hot at times while the AC was on.
07-12-2015, 03:58 AM
#3
Race Director
There was a thread about the 'mode doors' that re-direct the airflow, that may address your problem. I'll post a link if I can find it.
Major PITA to repair. Good Luck
Major PITA to repair. Good Luck
Last edited by Knob Jockey; 07-12-2015 at 04:12 AM.
07-15-2015, 08:59 PM
#4
Burning Brakes
John
07-15-2015, 09:41 PM
#5
Drifting
Member Since: Feb 2012
Location: skiatook oklahoma
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Thanks, KJ. I don't believe mine is due to a delaminated mode door because it doesn't make a weird sound. It acts like the vacuum hoses that control it are switched. However, does the C6 use vacuum hoses to actuate the mode door? I don't even know where to begin looking. I had the var in for a recall and hope the mechanic didn't mess things up.
John
John
just as a side note, i believe there are actuators that move parts (like shades) inside the unit, thats where usually the problem is when air moves incorrectly or fails to move properly.
this is a blow-up of the a/c unit. i think (but not positive) that the shades are item #1. the actuator is item #8, there are 2 of them(i know it show 3 of them but parts list says 2 required). also #29 is an actuator.
i am not a a/c unit repair person, but from what i can tell...
the purple area is for the dash vent air ,
the brown circle area is the shades
this is info i had saved from many years ago, i dont know what year the blow-up is for, but suspect its valid for all C6
Last edited by ChevyDave; 07-15-2015 at 09:48 PM. Reason: fixed attachment
07-20-2015, 02:51 PM
#6
Burning Brakes
the parts blowup shows actuators..
just as a side note, i believe there are actuators that move parts (like shades) inside the unit, thats where usually the problem is when air moves incorrectly or fails to move properly.
this is a blow-up of the a/c unit. i think (but not positive) that the shades are item #1. the actuator is item #8, there are 2 of them(i know it show 3 of them but parts list says 2 required). also #29 is an actuator.
i am not a a/c unit repair person, but from what i can tell...
the purple area is for the dash vent air ,
the brown circle area is the shades
this is info i had saved from many years ago, i dont know what year the blow-up is for, but suspect its valid for all C6
just as a side note, i believe there are actuators that move parts (like shades) inside the unit, thats where usually the problem is when air moves incorrectly or fails to move properly.
this is a blow-up of the a/c unit. i think (but not positive) that the shades are item #1. the actuator is item #8, there are 2 of them(i know it show 3 of them but parts list says 2 required). also #29 is an actuator.
i am not a a/c unit repair person, but from what i can tell...
the purple area is for the dash vent air ,
the brown circle area is the shades
this is info i had saved from many years ago, i dont know what year the blow-up is for, but suspect its valid for all C6
07-31-2015, 02:32 PM
#7
Burning Brakes
SOLVED! Disconnected the battery. Defrost works fine.
Either in this thread or another, someone mentioned that disconnecting the battery has corrected this issue with some who have experienced. I did just that. Disconnected the negative cable from the battery for one minute then reconnected. Defrost now works perfect.
God bless!
God bless!