GMC 1994 Yukon Owner's Manual page 51

6. To tighten the
belt, feed the lap
belt back 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
an
adult or
larger child passenger.
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