One problem related to front seat belt buckle assembly has been reported for the 1999 Buick Century. The most recently reported issues are listed below.
Belt buckle of rear drivers side seat belt was replaced, at this time rear passengers side seat belt buckle will no longer latch. Consumer stated that the passenger side seat belt also would not latch.
| Front Seat Belt Webbing problems | |
| Rear Seat Belt problems | |
| Front Seat Belt Buckle Assembly problems | |
| Front Seat Belt Retractor problems |