2018 GMC SIERRA DENALI headrest

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Seats and Restraints 59Rear Seats The rear seat has adjustable
headrests in the outboard seating
positions.
The height of the headrest can be
adjusted. Pull the headrest up to
raise it. To lower the headrest, push
the headrest down.
If you are installing a child restraint
in the rear seat, see “ Securing a
Child Restraint Designed for the
LATCH System ” under Lower
Anchors and Tethers for Children
(LATCH System) 0 99 .Front Seats Seat Adjustment
{ WarningYou can lose control of the
vehicle if you try to adjust a driver
seat while the vehicle is moving.
Adjust the driver seat only when
the vehicle is not moving.
To adjust a manual seat:
1. Pull the handle at the front of
the seat. 2. Slide the seat to the desired
position and release the
handle.
3. Try to move the seat back and
forth to be sure it is locked in
place.
To adjust the seatback, see
Reclining Seatbacks 0 61 .
To adjust the lumbar support,
if equipped, see Lumbar Adjustment
0 60 .
Center Seat If equipped, the center front
seatback doubles as an armrest and
cupholder/storage area for the driver
and passenger when the center
front seat is not used. Do not use it
as a seating position when the
seatback is folded down.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
106 Seats and Restraints Crew 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 belts. Refer to your child
restraint manufacturer ’ s
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. For forward-facing child
restraints, attach and tighten
the top tether to the top tether
anchor (loop), if your vehicle
has one. Follow the child
restraint instructions the
vehicle LATCH anchor weight
limits described at the
beginning of this section, and
the following steps:
Example — Rear Driver Side
Position Example — Rear Driver Side
Position
2.1. For a top tether in the
rear driver side position:
2.1.1. Raise the
headrest.
2.1.2. Route the top
tether (4) between
the headrest
posts, through the
loop (3), behind
the inboard
headrest post, and
under the center
shoulder belt (2).

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Seats and Restraints 1072.1.3. Then attach the
top tether (4) to
the top tether
anchor (loop) (1) at
the center rear
seating position.
2.2. For a top tether in the
rear center position:
2.2.1. Route the top
tether (4) through
the center loop (1),
and behind the
passenger side
headrest post.
2.2.2. Then attach the
top tether (4) to
the top tether
anchor (loop) at
the rear passenger
side seating
position. 2.3. For a top tether in the
rear passenger position:
2.3.1. Raise the
headrest.
2.3.2. Route the top
tether (4) between
the headrest
posts, through the
loop on the
passenger side
and behind the
inboard
headrest post.
2.3.3. Then attach the
top tether (4) to
the top tether
anchor (loop) (1) at
the center rear
seating position.
3. Tighten the top tether per the
child restraint manufacturer's
instructions. When the top tether is properly
tightened, the anchor (loop)
may bend. This is normal and
will not damage the vehicle.
If child restraints are installed
in both outboard positions, both
top tethers can be attached to
the center loop. Top tethers
can be attached for child
restraints in all three rear
seating positions at the same
time, following the routing
instructions above.
4. Before placing a child in the
child restraint, make sure it is
securely held in place. To
check, grasp the child restraint
at the LATCH path and attempt
to move it side to side and
back and forth. There should
be no more than 2.5 cm (1 in)
of movement for proper
installation.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
108 Seats and Restraints Double Cab Models
1. Remove the headrest prior to
installing a forward-facing child
restraint in an outboard rear
seating position. See “ Headrest
Removal and Reinstallation ” at
the end of this section.
2. 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 belts. Refer to your child
restraint manufacturer ’ s
instructions and the
instructions in this manual.
2.1. Find the lower anchors
for the desired seating
position.
2.2. Put the child restraint on
the seat.
2.3. Attach and tighten the
lower attachments on the
child restraint to the lower
anchors. 3. For forward-facing child
restraints, attach and tighten
the top tether to the top tether
anchor (loop). Follow the child
restraint instructions, the
vehicle LATCH anchor weight
limits described at the
beginning of this section, and
the following steps:
Example — Rear Driver Side
Position Example — Rear Driver Side
Position
3.1. For a top tether in the
rear driver side position:
3.1.1. Remove the
headrest.
3.1.2. Route the top
tether (4) through
the loop (3) on the
driver side under
the center
shoulder belt (2).

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Seats and Restraints 1093.1.3. Then attach the
top tether (4) to
the top tether
anchor (loop) (1) at
the center rear
seating position.
3.2. For a top tether in the
rear center position:
3.2.1. Route the top
tether (4) through
the center loop (1),
and behind the
passenger side
headrest post.
3.2.2. Then attach the
top tether (4) to
the top tether
anchor (loop) at
the rear passenger
side seating
position.
3.3. For a top tether in the
rear passenger position:
3.3.1. Remove the
headrest. 3.3.2. Route the top
tether (4) through
the loop on the
passenger side.
3.3.3. Then attach the
top tether (4) to
the top tether
anchor (loop) (1) at
the center rear
seating position.
4. Tighten the top tether per the
child restraint manufacturer's
instructions.
When the top tether is properly
tightened, the anchor (loop)
may bend. This is normal and
will not damage the vehicle.
If child restraints are installed
in both outboard positions, both
top tethers can be attached to
the center loop. Top tethers
can be attached for child
restraints in all three rear
seating positions at the same
time, following the routing
instructions above. 5. Before placing a child in the
child restraint, make sure it is
securely held in place. To
check, grasp the child restraint
at the LATCH path and attempt
to move it side to side and
back and forth. There should
be no more than 2.5 cm (1 in)
of movement for proper
installation.
Headrest Removal and
Reinstallation Crew Cab Models
For outboard rear seating positions,
if the child restraint cannot be
installed properly with the headrest
in place, the headrest may be
removed. See your dealer for
assistance with removal.
Store the removed headrests in a
secure place. Reinstall the headrest
before the seating position is
moved.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
110 Seats and Restraints To reinstall the headrest:
1. Insert the headrest posts into
the holes in the top of the
seatback with the longer
chrome plated post toward the
driver side of the vehicle.
2. Push the headrest all the way
down until it contacts the top of
the seatback.
Double Cab Models
The rear outboard headrests should
be removed when installing
forward-facing child restraints. To remove the headrest:
1. Press both buttons on the
headrest posts and pull up on
the headrest.
2. Store the headrest in a secure
place.
3. When the child restraint is
removed, reinstall the headrest
before the seating position
is used. To reinstall the headrest:
1. Insert the headrest posts into
the holes in the top of the
seatback with the longer
chrome plated post toward the
driver side of the vehicle.
2. Push the headrest all the way
down until it contacts the top of
the seatback.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Seats and Restraints 111
Replacing LATCH System
Parts After a Crash
{ WarningA crash can damage the LATCH
system in the vehicle. A damaged
LATCH system may not properly
secure the child restraint,
resulting in serious injury or even
death in a crash. To help make
sure the LATCH system is
working properly after a crash,
see your dealer to have the
system inspected and any
necessary replacements made as
soon as possible.
If the vehicle has the LATCH system
and it was being used during a
crash, new LATCH system parts
may be needed.
New parts and repairs may be
necessary even if the LATCH
system was not being used at the
time of the crash. Securing Child Restraints
(With the Seat Belt in the
Rear Seat) When securing a child restraint with
the seat belts in a rear seat position,
study the instructions that came with
the child restraint to make sure it is
compatible with this vehicle.
If the child restraint has the LATCH
system, see Lower Anchors and
Tethers for Children (LATCH
System) 0 99 for how and where to
install the child restraint using
LATCH. If a child restraint is secured
in the vehicle using a seat belt and
it uses a top tether, see Lower
Anchors and Tethers for Children
(LATCH System) 0 99 for top tether
anchor locations.
Do not secure a child seat in a
position without a top tether anchor
if a national or local law requires
that the top tether be anchored, or if
the instructions that come with the
child restraint say that the top strap
must be anchored. If the child restraint or vehicle seat
position does not have the LATCH
system, you will be using the seat
belt to secure the child restraint. Be
sure to follow the instructions that
came with the child restraint.
If more than one child restraint
needs to be installed in the rear
seat, be sure to read Where to Put
the Restraint 0 98 .
Double Cab 1. Remove the headrest prior to
installing a forward-facing child
restraint in an outboard rear
seating position. See “ Headrest
Removal and Reinstallation ”
under Lower Anchors and
Tethers for Children (LATCH
System) 0 99 .
2. Put the child restraint on
the seat.
3. Pick up the latch plate, and run
the lap and shoulder portions
of the vehicle's seat belt
through or around the restraint.
The child restraint instructions
will show you how.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Seats and Restraints 1137. For forward-facing child
restraints, attach and tighten
the top tether to the top tether
anchor (loop). Refer to the child
restraint instructions, the
vehicle LATCH anchor weight
limits and instructions listed in
Lower Anchors and Tethers for
Children (LATCH System) 0 99 .
8. Before placing a child in the
child restraint, make sure it is
securely held in place. To
check, grasp the child restraint
at the seat belt path and
attempt to move it side to side
and back and forth. When the
child restraint is properly
installed, there should be no
more than 2.5 cm (1 in) of
movement.
To remove the child restraint,
unbuckle the vehicle seat belt and
let it return to the stowed position.
If the top tether is attached to a top
tether anchor, disconnect it.
Reinstall the headrest before the
seating position is used. See
“ Headrest Removal and Reinstallation ” under Lower Anchors
and Tethers for Children (LATCH
System) 0 99 for additional
information on installing the
headrest properly.
Crew Cab 1. Put the child restraint on
the seat.
2. Pick up the latch plate, and run
the lap and shoulder portions
of the vehicle's seat belt
through or around the restraint.
The child restraint instructions
will show you how. 3. Push the latch plate into the
buckle until it clicks.
Position the release button on
the buckle, away from the child
restraint system, so that the
seat belt could be quickly
unbuckled if necessary.
4. Pull the shoulder belt all the
way out of the retractor to set
the lock. When the retractor
lock is set, the belt can be
tightened but not pulled out of
the retractor.