Cadillac 1994 DeVille Owners Literature page 66

To remove the child restraint, just unbuckle the vehicle's safety belt and
let it go back all the way.
Securing a Child
Position
Restraint
6. Push and pull the
child restraint in
different
directions to be
sure it is secure.
in the Center Rear Seat
When you secure a child restraint in a center seating position, you'll be
using the lap belt.