GMC Canyon Owner's Manual page 70

6. 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.
70
7. Tighten the top tether to the anchor. See
Lower Anchors and Tethers for Children
(LATCH) on page 56.
8. Push and pull the child restraint in different
directions to be sure it is secure.
To remove the child restraint, if the top tether is
attached, disconnect it. 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.
For outboard seating positions, when the safety
belt is not in use, slide the latch plate up the safety
belt webbing. The latch plate should rest on the
stitching on the safety belt, near the upper anchor
on the side wall.