My 2004 c5 is suffering from water leakage on the driver side! I looks like the window is just a little short from meeting the top of the door and its letting large amounts of water inside.... very annoying getting into a wet C5. I have searched the forums and youtube for any pictures or tutorials and cannot find any! I can take the door panel off easily, I just do not know how to ADJUST the actual window. Any help would be great!!! Thanks!

 

Have you or someone recently replaced the window regulator/motor? It sounds like the window is not set in the proper place in the regulator for when the door and window are fully closed. Take off the door panel, remove the speaker and loosen the 2 bolts holding the window in place then slightly raise the glass and tighten. You may have to do this a few times until you get it set correctly. Maybe you can use the original marks on the glass where the window sat when new, if they are still there.

Next check if there is enough pressure on the window as it sets against the window seal when closed. There is an adjsutment for tip-in under the door. It is covered by a black rectangular rubber grommet at the front, you can see it if you lay on your back. Once you remove the balck grommet you will see the nut. Loosen the nut and the window regulator can be shifted inward or outward. Outward will increase the tip in pressure of the glass against the upper part of the gasket. May take some trial and error. Be careful not to move the regulator too far too fast. Just move it a little at a time, then tighten and test. Don't slam the door too hard in case you moved the regulator too much. Too much pressure can cause the window to rub against the regulator pulley at the top or even break.

Here is a helpful video to use:
Hope it helps.

 

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