I seem to be leap frogging on issues here. I'm one month into ownership (2014) and have a new possible problem to solve. The driver's side window does not to want to hold its indexing setting.
technically, it's not an indexing issue, as the window does close all of the way. The issue is that sometimes it does not seat in the seal correctly. It will occasionally sit about a windows width outside of the seal.
If I re-index it, it will seal. It just will not keep that setting consistently. I keep saving this position with "1" & "2" buttons. What am I doing wrong?

 

the one and two buttons are for the seat position, it has nothing to do with the window indexing feature that keeps it a tad down before it closes.

I never had an issue with that but for the guys who have I think there's a procedure in the manual to reset that if it loses it's position

 

I wasn't sure too if the 1 / 2 set buttons effected the indexing, As I mentioned, it is indexing, just not aligning properly with the seal.
When I do a reindex, it will seal correctly, just not consistently.

 

Good info.

https://www.google.com/search?q=rein...pHKiG37yI,st:0

Could also be a battery issue.

 

I agree that this is good info, but it does not cover the issue that I'm experiencing. I am familiar with the re-indexing procedure. Mine issue is one of inconsistent alignment. It has always indexed correctly (fully closing). Every few cycles though, it does fully close, only about 1/4" wide of seating (on the outside of the seal).

 

Ok,, I thought that's what you were saying. If the window is pushing outwards, then not sealing, it seems like the entire window mechanism is pushing out. Have they ever been removed, replaced, or adjusted? Sounds like the windows slides are lose.

 

So far, every time that I've done a re-index, the window 'realigns' and seals properly. I do not feel that the mechanism is the issue (as far as it being out of adjustment). If it was, how would just doing a re-index always correct it? I would have thought that the indexing would only cause the window to lower about 1/4". It also seems to get pushed out about the same amount. I'll continue to play with it. I have a feeling it's more a setting issue than mechanical one.

 

The reindexing could cause the window to realign properly. With the door open and the window up, see if the window will move when pushed out and in.

 

I did try one time, when closing the door, also pushing the top of the window at the same time, it did not move (felt pretty secure). If it never seated properly, I would suspect it to be a mechanical issue. If it was something loose internally, I would also expect to hear something rattling when closing the door (it closes pretty solidly).
I also thought that maybe the door wasn't closing all of the way. It does look to be perfectly aligned as well. For now, I have to check the window before I take off, as I can only adjust the window with door open. I tried adjusting with the door closed, but the window won't realign then.

 

Does the window travel about an inch lower when you open the door? Sounds like it's not and when you are closing the door, the glass is engaging the outside of the window gasket instead of traveling back up in it when you close the door.

 

Will follow this to see what solution you can come up with. Best of luck getting this fixed.

 

It lowers what seems to be, the normal indexing amount (about 1/2"). If not for it closing outside of the seal, it would be fine. I have a feeling it's a setting issue, as re-indexing always seems to get it to seal properly (align in the seal). I just haven't figured why it doesn't maintain its setting.

 

I suspect there is some outward pressure on the window that causes it to move outward. There is no electrical adjustment/index that will solve the problem since the indexing only sets how far the window will drop when the door is opened. Have you stood outside of the car and watched the window movement while you opened/closed the door many times? That might give you an idea of what has happened. Has anybody done any work on the door opening weather strip or has it been replaced? Have you checked the door hinges to see any movement in the door? Check the clearance between the window and the A pillar reveal molding it shouldn't be any more than how the window Check the inner and outer window seals on the door to see if they are letting the window move in or out too much. One thing that can stress the window and maybe cause movement is if the battery was disconnected while the window was closed and the window wasn't reindexed the door would open and close without indexing. That means the window would pull the upper sealing channel outward and inward. If that condition weren't resolved quickly continual opening/closing of the door would cause wear and tear on that channel. Since you aren't the first owner of the car there is no telling what happened over the previous 11 years.

There is a fair amount of outward pressure at the top of the window when driving at highway speeds, on the C5s this caused the top of the windows to blow out causing a lot of wind noise. GM attempted to resolve blow out by using anti blow out clips to hold the window against the seal (searchable in the C5 forums on this board). On the C6 they went with the current method of driving the window upward into a channel and when the door was opened indexing the window.

Here are the window adjustment instructions, what is interesting is the diagram shows a C5 and item 2 in the diagram is a blow out clip.

I would check the clearances shown in Step 10 to see if there is any issue with how the window rides on the A-pillar reveal molding as that will affect how much the window pushes outward as it is raised.

Bill

 

I have watched the window closing from the outside. Nothing appears out of the ordinary. It indexes down when open, then indexes back up when closed. I checked to window for play when opened, and it is tight with no movement. Once the window is seated properly, it stays seated.

 

Battery gremlin? causes weird stuff to happen.

 

I know of the battery issues common with Corvettes. I'm just having a hard time figuring out why the window is not always lining up correctly. I don't see this a battery issue causing this type of a problem. I will though still check the battery's date and voltage this weekend.

 

can you take a pic of what it looks like when it's messed up?

 

I can try (at work currently). From the outside, you really can't see much. From the inside, you can see where it is sitting just outside of the rubber door seal. This may also be hard to capture in a picture, as it's a bit tight.

 

Do you know the history of the car? Has the window ever been replaced or adjusted?

 

I onlly hae a carfax report (nothing listed related to this issue). I am the 4th owner now.