Franman

so I've taken my GL into dealer twice now for what I can only describe as a "finger on chalkboard meets whoopie cushion" noise that comes from both of my front windows when I roll them down. Definitely seems to occur more frequently when it's colder outside, but it's downright embarassing if I have a passenger in the truck and not what I expect from Mercedes.

So first time the dealer just did a thorough cleaning of the window and assemblies.

This 2nd time around they replaced the seals. Worked fine when I picked it up yesterday afternoon - rolled them down this morning and same horrid noise emitted, so I'm back to square one.

Has anyone experienced this with their GL and how was it fixed? My warranty is only good for another 2 months and I'm running out of time and options.