GMC 2008 Savana Van Owner's Manual page 58

If your child restraint has the LATCH system, see
Lower Anchors and Tethers for Children (LATCH)
on page 1-39 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 1-39 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.
1-54
You will be using the lap-shoulder belt to secure the
child restraint in this position. Follow the instructions
that came with the child restraint.
1. Move the seat as far back as it will go before
securing the forward-facing child restraint.
If you have no other choice but to install a
rear-facing child restraint in this seat, make
sure the airbag is off once the child restraint
has been installed.
When the airbag off switch has turned off the
right front passenger's frontal airbag, the off
indicator in the airbag off light should light and
stay lit when you start the vehicle. See Airbag
Off Light on page 3-28.
2. Put the child restraint on the seat.
3. Pick up the latch plate, and run the lap and
shoulder portions of the vehicle's safety belt
through or around the restraint. The child
restraint instructions will show you how.