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Old Nov 30, 2025 | 03:37 PM
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Default Window adjustment

Once again, I've tried multiple searches for information and can't find any threads.
My C5 (2002) passenger side window needs to be adjusted. The regulator work fine and I have done what I thought would help, but it's still not enough. From what I see the regulator itself has only one mounting position.
The passenger glass is too far forward and not sealing in the back. Compared to the driver side the window is 3/8" or so farther forward. It's to the point it barely touches the very edge of the rear window seal. I lowered the entire glass in the regulator mount, and it still needs 1/4 " more. I'm feeling there has to be a more proper/correct/better way to adjust it. I know where the tension adjustment is as well as the stops, I'm just not able to get the forward to back adjusted.
The bracket that is attached to the window appears to be properly aligned with the reference mark, from what I have read and seen. If both glass brackets were moved 3/8" - 1/2" it would be perfect.
Also, what type of adhesive is used to bond the brackets to the glass and how would it be removed? I can take it to the glass shop, which I may, however if it's something I'm missing or there is a procedure to follow, I could try it.
Any help or suggestions will be appreciated.

Last edited by TSheff; Nov 30, 2025 at 04:14 PM.
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Old Nov 30, 2025 | 04:30 PM
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Just watched another video on replacing the regulator and saw the window brackets I refer to are not attached to the glass. This could be my entire issue.
Again, any feedback would be appreciated.
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Old Dec 1, 2025 | 08:03 AM
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An excerpt from the FSM would be ideal here. I've monkeyed around with the window adjustment myself and can only ever get it less bad as opposed to perfect. In your situation though I believe you'd just need to loosen the 2 brackets that clamp the window into place and slide it back, gotta get that door panel off to get to it all.
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Old Dec 1, 2025 | 09:19 AM
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Originally Posted by Supercharged111
An excerpt from the FSM would be ideal here. I've monkeyed around with the window adjustment myself and can only ever get it less bad as opposed to perfect. In your situation though I believe you'd just need to loosen the 2 brackets that clamp the window into place and slide it back, gotta get that door panel off to get to it all.
That's exactly what I need to do, however the previous owner or installer put some type of adhesive on the bracket nearest the outer door. I had the glass completely out Saturday and couldn't move them, assuming they were meant to be that way. Had I known they weren't supposed to be attached I would have put effort into removing them. Now it is too Cold and Rainy to work on it. As soon as it clears up I'll tackle it. Now that I have a better idea of how everything works, pretty sure I can get it.
Thank you for the reply.
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Old Dec 1, 2025 | 10:15 AM
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Mine didn't have any adhesive, but it was stuck on there a bit from the ages (I swapped my original windows for some tinted windows). Sounds like yours will need some elbow grease, but you can test and retest before buttoning it all back up for good this next time.
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Old Dec 1, 2025 | 11:28 AM
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Originally Posted by Supercharged111
Mine didn't have any adhesive, but it was stuck on there a bit from the ages (I swapped my original windows for some tinted windows). Sounds like yours will need some elbow grease, but you can test and retest before buttoning it all back up for good this next time.
It's not just stuck from aging, definitely adhesive or sealer. I couldn't separate it and it was clearly a uniform seal looking from the inside of the glass. I'll try to use either dental floss like removing emblems or if that's not strong enough then guitars string, then a razor blade and good adhesive remover for any remaining residue.
Thanks Again
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Old Dec 1, 2025 | 12:25 PM
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Browse the forum on this subject, there are several in-depth write-ups previously posted. The windows have fore/aft, up/down and tip in/out adjustments as well as the actual glass clamps. It is a trial and error process and take a few tries. Good Luck
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Old Dec 1, 2025 | 03:02 PM
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Originally Posted by jcgunn
Browse the forum on this subject, there are several in-depth write-ups previously posted. The windows have fore/aft, up/down and tip in/out adjustments as well as the actual glass clamps. It is a trial and error process and take a few tries. Good Luck
I've tried searching, unless typed in perfectly I get no results.
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Old Dec 1, 2025 | 03:25 PM
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There is no fore/aft adjustment. That is done by moving the window in the 2 clamps.

The up/down for each end is a reverse torx screw kind of below and to the side of each window clamp that is adjusted with the window down from the bottom of the door.

The tilt is the bolt behind the reflector.
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Old Dec 1, 2025 | 03:51 PM
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Originally Posted by lionelhutz
There is no fore/aft adjustment. That is done by moving the window in the 2 clamps.

The up/down for each end is a reverse torx screw kind of below and to the side of each window clamp that is adjusted with the window down from the bottom of the door.

The tilt is the bolt behind the reflector.
Thank you for the information.
After much research I have found just what you stated on fore/aft. Again, I'll resolve it when I open it up again, but someone put adhesive/sealer on the outer clamp, making it appear as if it is a permanently attached and making it impossible to adjust. As soon as the weather clears, I'll resolve it. It would be inside my shop, but I'm working on my wife's Mustang in there right now. Too many projects at one time.



Last edited by TSheff; Dec 1, 2025 at 06:09 PM.
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Old Dec 1, 2025 | 10:20 PM
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https://www.corvetteforum.com/forums...o-replace.html
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Old Dec 3, 2025 | 06:32 PM
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Just when you think your'e done(door panel still off),once you think you have it where you want it,close the door with a dollar bill between door seal rubber and glass. pull it out slowly ,it should feel a liitle snug meaning a good seal. Keep the all rubber seals treated with a good product to keep them soft and flexible.
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Old Dec 3, 2025 | 08:33 PM
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Originally Posted by vetrnz06
Just when you think your'e done(door panel still off),once you think you have it where you want it,close the door with a dollar bill between door seal rubber and glass. pull it out slowly ,it should feel a liitle snug meaning a good seal. Keep the all rubber seals treated with a good product to keep them soft and flexible.
I had read about the dollar bill trick to set the tension. As soon as it's back from paint, to repair minor damage and neglect to the rear bumper, I'll pull it into my shop and get the window position correct, fore/aft, up/down, and seal tension. Before I put the interior panel back on, I'm also going to put sound deadening mat inside the door as well as covering all the door frame holes exposing the interior to noise.
Thanks
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