Most likely the rubber gasket (archive)
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Posted by jcarey on March 16, 2001 at 14:09:16:
In Reply to: help, glass in sunroof is creaking posted by Dave P on March 16, 2001 at 13:51:50:
(posted from: dsl-238.dsldesigns.com (198.79.108.238))
This is a common complaint on all 7 series cars from what I have read here and in other places. Mine ahs it and I plan to ask the dealer to replace the gasket with one that I have read about that is ribbed to eliminate this creaking and wind noise at highway speeds.Try this test, lubricate the rubber gasket for the sunroof with vasoline (small amount) and drive it over the same bumps where it creaks now. If the noise goes away, then you have a bad gasket. If not, the the noise is from someting else.
John
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