My C7 3LT Coupe had a problem with the driver's seat cushion trim coming loose from the seat frame. If you are a DIY type of person you can fix or replace this yourself.
I understand a replacement part is relatively inexpensive and can't be too hard to replace but I also understand this is a poor design and prone to breakage again. This fix is/should be permanent. See link below.
C7 Seat Fix.docx