c6 AC
Thread Starter
Heel & Toe
Joined: Jun 2010
Posts: 20
Likes: 0
From: wichita ks
c6 AC
Hey guys sorry if there is a thread that covers this but i have been searching and can't findit. i have a 2006 c6 that the air only blows on the floor and defrost. it's cold but i want it throug the vents. i have read a lot and i am assuming its a vaccum issue but i can't seem to find a good diagram so i can get into it any help would be great!! thanks1
Instructor
Joined: Sep 2011
Posts: 229
Likes: 18
I hope it's not the same problem that happened to me. Mine did the same thing- took it to Chevy dealer and had to order 3 parts (per tsb). Parts weren't too expensive(my cost around $70or $80, but had to pull dash out to replace. A very big job- cost around $1,000, but they fixed it. The part that was defective resembled a roll up window shade, it has different holes in it to direct the air to different vents- somehow it was torn and wouldn't work. This is the first one that they had done, so I don't think it was a common problem, although their was a tsb from Chevy on the problem. Mine is an '05 coupe.
Team Owner
Joined: Sep 2005
Posts: 20,352
Likes: 568
From: Ventura County, Calif
The mode actuators were a significant problem on the C5's and GM just continued using them in the C6. We've been seeing more reports of failures on '05's and '06's in the past year. So it would seem to be a longevity issue with the material. One possible good news point is they have changed the "color" of the material used so "hopefully" that means it is a better material and will last longer. 
There are 4 units in the dash. If you go to the trouble, work and expense of replacing one you should replace all of them. Otherwise you're risking having to do it all again later this year, next year...etc. "Generally speaking", the cost of a dealer replacement on these has been right around $1500. I don't consider it a DIY job but if you're capable, one of the threads below gives some insight.
Here are a couple of threads to give you some info for thought. Good luck.
http://forums.corvetteforum.com/c6-t...-material.html
http://forums.corvetteforum.com/c6-c...or-repair.html
_Sloth Whisperer_
Joined: Jul 2008
Posts: 3,369
Likes: 9
From: Malaysia Air Flight 370
If you do end up pulling the dash apart, be proactive and replace the heater core. Cheap insurance. Mine died and spit coolant into my cabin.
Replacing it was one of the most aggravating repairs I've ever made, on any car. Ever. There's nothing behind that dash I would ever want to have to go into a second time.
Replacing it was one of the most aggravating repairs I've ever made, on any car. Ever. There's nothing behind that dash I would ever want to have to go into a second time.
Thread Starter
Heel & Toe
Joined: Jun 2010
Posts: 20
Likes: 0
From: wichita ks
LOL thanks guys! i guess my hope of finding a vacum line loose or punchured is shot. 
it blows nice cool air out of the floor and top,but it's hot as hell in kansas i want those vents, I am a DIY but don't know if i can find the time here lately might have to wait till this fall
it blows nice cool air out of the floor and top,but it's hot as hell in kansas i want those vents, I am a DIY but don't know if i can find the time here lately might have to wait till this fall
Team Owner
Joined: Sep 2000
Posts: 24,994
Likes: 2,694
From: Far NW 'burbs of Chicago
St. Jude Donor '13
If you do end up pulling the dash apart, be proactive and replace the heater core. Cheap insurance. Mine died and spit coolant into my cabin.
Replacing it was one of the most aggravating repairs I've ever made, on any car. Ever. There's nothing behind that dash I would ever want to have to go into a second time.
Replacing it was one of the most aggravating repairs I've ever made, on any car. Ever. There's nothing behind that dash I would ever want to have to go into a second time.
Looking for information/discussion...
