Sun Roof Mystery Part

[Acme Lighting]

This piece of rubber fell out of the sun roof on a 2021, can't see where it goes? Any ideas?

 

[99WhiteC5Coupe]

This piece of rubber fell out of the sun roof on a 2021, can't see where it goes? Any ideas?

That part is called a “shield” - part number FL3Z16500A66A.

There are two of them (identical) - one on each side of the sunroof track (facing front to rear on the car).

Perhaps examine each side with the sunroof open and determine the position based upon the existing one (that didn’t fall out)?