Chevrolet 2000 Express Van Owner's Manual page 66

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If the shoulder belt goes in front of the child's face or
neck, put it behind the child restraint.
4. Pull the rest of the shoulder belt all the way out of
the retractor to set the lock.
3. 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.
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