1993 Cadillac DeVille Owner's Manual - Page 59

6. To tighten the belt, feed the lap belt into the retractor while you push down on the child restraint. 7. Push and pull the child restraint in different directions to be sure it is secure. To remove the child restraint, just unbuckle the vehicle's safety belt and let it go back all the way. The safety belt will move freely again and be ready to work for anadult or larger child passenger.