HI

to solve the problem in the sun roof of your car captivity ltz 2021 : 
1. Use a glass cleaner that does not contain ammonia or vinegar.
2. Wipe the rubber gasket that seals your sunroof with a mild detergent on a lint-free cloth.
3.Rinse the gasket completely with a lint-free rag soaked in cool water. 4.Lubricate the gasket with a silicone-based lubricant.
5. Remove any wax buildup from the metal frame that is around the top of the sunroof with an old toothbrush and mild detergent.
6. Check the mounting hardware on your manually operated sunroof if it is exposed.
7.Clean the tracks of your power-operated, sliding sunroof. And lubricate the inner lip of the sliding rails to maintain a smoothly gliding sunroof.
8.Visit your local sunroof professional for an annual tune-up to clean and adjust your sunroof. 
As shown in video Video link