GMC 2012 Sierra Series Owner's Manual page 122

3-58 Seats and Restraints
2. If the child restraint manufacturer
recommends that the top tether
be attached, attach and tighten
the top tether to the top tether
anchor (loop), if your vehicle has
one. Refer to the child restraint
instructions and the following
steps:
Example Rear Driver Side
Position
Example Rear Driver Side
Position
2.1. When using a child restraint
with a top tether in the rear
driver side position:
A. Raise the headrest
or head restraint.
B. Route the top
tether (B) between
the headrest or head
restraint posts,
through the loop (A),
behind the inboard
headrest or head
I n f o r ma t i o n P r o v i d e d b y :
restraint post, and
under the center
shoulder belt (C).
C. Attach the top
tether (B) to the top
tether
anchor (loop) (D) at
the center rear
seating position.
2.2. When using a child restraint
with a top tether in the rear
center position:
A. Route the top
tether (B) through
the center loop (D),
and behind the
inboard passenger
side headrest or
head restraint post.
B. Attach the top
tether (B) to the top
tether anchor (loop)
at the rear
passenger side
seating position.