Chevrolet 2008 Silverado 1500 Pickup Owner's Manual page 60

5. To tighten the belt, push down on the child restraint,
pull the shoulder portion of the belt 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.
1-56
6. If your child restraint has a top tether, follow the
child restraint manufacturer's instructions regarding
the use of the top tether. See Lower Anchors
and Tethers for Children (LATCH) on page 1-45
for more information.
7. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, unbuckle the vehicle
safety belt and let it return to the stowed position.
If the top tether is attached to a top tether anchor,
disconnect it.