Chevrolet 2006 Express Van Owner's Manual page 64

6. To tighten the belt, push down on the child
5. Pull the rest of the shoulder belt all the way out of
restraint, pull the shoulder portion of the belt
the retractor to set the lock.
to tighten the lap portion of the belt and feed the
shoulder belt back into the retractor. If you are using
a forward-facing child restraint, you may find it
helpful to use your knee to push down on the child
restraint as you tighten the belt. You should not
be able to pull more of the belt from the retractor
once the lock has been set.
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