This is on my drivers side ONLY. Do you guys think this is a sign of a slightly bent frame?! Yes, the door is closed, lol...and it seals great on all the other parts of the window but that one. On another site people were saying they have the problem too, and 90% of them had t-tops or convertables. I have seen a few guys launch hard, and the left front tire goes up and the right rear squats = hard twisting....that may be why only ONE side is offline!? I heard of problems with torque twisting the frames on the t-top/soft top models!!! Thanks ---

 

Mine does the same thing on the drivers side. Check out your door track first. I had the roller on the window itself break off causing it to misalign. I think that peice was $30 or $40 from gm.

 

After you changed it , did it stop doing that?! Thanks---

 

I haven't got around to it yet, but that is the only problem I see. The regulator was replaced a while ago and I tried to Jb weld the roller on(Ghetto I Know) as a temporary fix and it cloesd right back up. Also if the roller isn't broken check to make sure the guide on the back is adjusted.