when i got my G i herd the sunroof squeak but never owning a car with a sunroof i thought it was just somthing u had to live with but latly i been reading about every one complaining about it and naturaly it started to bug me so i think i may have found away to fix it but i dnt know how long it will last. all i did was clean the rubber strip around the glass with some 303 protectant then cleaned the lip on the roof of the car and waxed it. now there is only a very light squeak due to the fact i couldnt get one spot on the rubber around the glass. i hope it works and keeps the squeak gone. let me know if it works for u

 

Thanks for the input, I've got the same annoying squeak there, sounds cheap. I'm going to try really cleaning it well tonight, hopefully it'll work. Glad it worked for you

 

Tried this fix and it didn't work at all. My roof even creaks with the moonroof retracted in....

 

Clean it and grease the rails.

 

I had the same problem. The dealership just lubed it for me, when I took the car in to get the driver's seat motor replaced. It's been squeak free ever since.