GMC 2013 Sierra Owner's Manual page 114

3-52 Seats and Restraints
Crew and Extended Cab Models
1. Attach and tighten the lower
attachments to the lower
anchors. If the child restraint
does not have lower
attachments or the desired
seating position does not have
lower anchors, secure the child
restraint with the top tether and
the safety belts. Refer to your
child restraint manufacturer
instructions and the instructions
in this manual.
1.1. Find the lower anchors for
the desired seating
position.
1.2. Put the child restraint on
the seat.
1.3. Attach and tighten the lower
attachments on the child
restraint to the lower
anchors.
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
I n f o r ma t i o n P r o v i d e d b y :
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.