GMC 1996 Sonoma Owner's Manual page 40

7. Push and pull the child restraint in different
directions
to
be sure it
is
secure. If it isn't, secure the
restraint in a different place in the vehicle and
contact the child restraint maker for their advice
about how to attach the child restraint properly.
To remove the child restraint, just unbuckle the vehicle's
safety belt. It will be ready to work for an adult or larger
child passenger.
Center Front Seat Position
(60/40 Split Bench Seat)
5. Buckle the belt. Make sure the release button is
positioned so you would be able to unbuckle the
safety belt quickly if you ever had to.
6. To tighten the belt, pull its free end while you push
down on the child restraint.
Don't use
a
child restraint in this position. The restraint
won't work properly.
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