GMC 2006 Sierra - Manual (Page 58)

Crew Cab Models
1. If the child restraint manufacturer recommends that
the top tether be attached, attach and tighten the
top tether to the top tether anchor, if equipped.
Refer to the child restraint instructions and
the following steps:
1.1. To access the top tether anchors, raise the
seat cushion by pulling up on the strap loop
at the rear of the seat cushion and fold
the seat cushion forward. Then fold
the seatback forward. See Rear Seat
Operation (Extended Cab) on page 1-8 or
Rear Seat Operation (Crew Cab) on page 1-9
for additional information.
1.2. Place the child restraint in the vehicle, near
the seating position that you are using.
1.3. Route the top tether according to your child
restraint instructions and the following
instructions:
If the position you are
using does not have a
head restraint and you are
using a single tether,
route the tether over the
seatback.
If the position you are
using does not have a
head restraint and you are
using a dual tether,
route the tether over the
seatback.
If the position you are
using has an adjustable
head restraint and you are
using a dual tether,
route the tether around the
head restraint.
If the position you are
using has an adjustable
head restraint and you are
using a single tether,
raise the head restraint
and route the tether under
the head restraint and
in between the head
restraint posts.
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