1993 Buick LeSabre Owner's Manual - Page 54

Larger Children PA A 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 andlet it go back all the way. The safety belt will move freely again and be ready to work for an adult or larger child passenger. Children who have outgrown child restraints should wear the vehicle's safety belts. If you have the choice, a child should sit next a to window so the child can wear a lap-shoulder belt and get the additional restraint a shoulder belt can provide. 52