GMC 2008 Acadia - Manual (Page 59)

If the position you are
using has a fixed headrest
or head restraint and
you are using a single
tether, route the tether over
the headrest or head
restraint.
3. Push and pull the child restraint in different
directions to be sure it is secure.
Securing a Child Restraint in a Rear
Seat Position
When securing a child restraint in a rear seating
position, study the instructions that came with your child
restraint to make sure it is compatible with this vehicle.
If your child restraint has the LATCH system, see Lower
Anchors and Tethers for Children (LATCH) on
page 1-47 for how to install your child restraint using
LATCH. If you secure a child restraint using a safety belt
and it uses a top tether, see Lower Anchors and
Tethers for Children (LATCH) on page 1-47 for top
tether anchor locations.
Do not secure a child seat in a position without a top
tether anchor if a national or local law requires that the
top tether be anchored, or if the instructions that
come with the child restraint say that the top strap must
be anchored.
In Canada, the law requires that forward-facing child
restraints have a top tether, and that the tether be
attached.
If your child restraint does not have the LATCH system,
you will be using the safety belt to secure the child
restraint in this position. Be sure to follow the instructions
that came with the child restraint. Secure the child in the
child restraint when and as the instructions say.
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