Page 70 of 594
Black plate (2,1)GMC Sierra Owner Manual - 2011
3-2 Seats and Restraints
Head Restraints
The front seats have adjustable
head restraints in the outboard
seating positions.
{WARNING
With head restraints that are
not installed and adjusted
properly, there is a greater
chance that occupants will suffer
a neck/spinal injury in a crash.
Do not drive until the head
restraints for all occupants are
installed and adjusted properly.
Adjust the head restraint so that the
top of the restraint is at the same
height as the top of the occupant's
head. This position reduces the
chance of a neck injury in a crash.Pull the head restraint up to raise it.
To lower the head restraint, press
the button, located on the top
of the seatback, and push the
restraint down.
Push down on the head restraint
after the button is released to make
sure that it is locked in place.
The head restraints are not
designed to be removed.
The rear seat has headrests that
can be adjusted up and down.
Page 131 of 594

Black plate (63,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-63
Do not fold the empty rear
seat with a safety belt buckled.
This could damage the safety
belt or the seat. Unbuckle and
return the safety belt to its
stowed position, before folding
the seat.
Regular Cab Models
1. If the child restraint manufacturerrecommends that the top tether
be attached, attach and tighten
the top tether to the top tether
anchor, if your vehicle has
one. Refer to the child restraint
instructions and the following
steps:
1.1. Pull the passenger seatback forward by pulling
the recliner handle upward
to access the top tether
anchor. See Reclining
Seatbacks on page 3‑6
for additional information.
1.2. Find the top tether anchor. 1.3. Remove the cover to
expose the anchor.
1.4. Route, attach, and tighten the top tether according
to your child restraint
instructions and the
following instructions:
If the position you are using
has an adjustable headrest
or head restraint and you
are using a dual tether,
route the tether around the
headrest or head restraint.
If the position you are using
has an adjustable headrest
or head restraint and you
are using a single tether,
raise the headrest or head
restraint and route the
tether under the headrest
or head restraint and in
between the headrest or
head restraint posts.
Page 133 of 594

Black plate (65,1)GMC Sierra Owner Manual - 2011
Seats and Restraints 3-65
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 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. 2.3. When using a child restraint
with a top tether in the rear
passenger position:
A. Raise the headrest
or head restraint.
B. Route the top tether (B) between
the headrest or
head restraint posts,
through the loop
on the passenger
side and behind the
inboard headrest or
head restraint post.
C. Attach the top tether (B) to
the top tether
anchor (loop) (D)
at the center rear
seating position.