Pontiac G6 2010 Owner's Manual page 83

If the position you are
using does not have a
headrest or head restraint
and you are using a
dual tether, route the tether
over the seatback.
If the position you are
using has a headrest or
head restraint and you are
using a single tether,
route the tether under the
headrest or head
restraint and in between
the headrest or head
restraint posts.
If the headrest or head restraint is adjustable, pull
up on the headrest or head restraint to access
the top tether anchors. If the headrest or head
restraint is fixed, there should be a gap to route the
strap under the headrest or head restraint. Do
not route the top strap around the headrest or
head restraint.
3. Push and pull the child restraint in different
directions to be sure it is secure.
If the position you are
using has a headrest or
head restraint and you are
using a dual tether,
route the tether under the
headrest or head
restraint and in between
the headrest or head
restraint posts.
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