Black plate (3,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
Seats and Restraints 3-3
restraint forward, grasp the head
restraint and pull forward to the
desired locking position. To adjust
the head restraint rearward, grasp
the head restraint and pull forward
fully until the mechanism releases
and allows the head restraint to
return to the full rear position.
The front seat outboard head
restraints are not removable.
Rear 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” underLower
Anchors and Tethers for Children
(LATCH System) on page 3-45.
Front Seats
Seat Adjustment
{Warning
You 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 on page 3-5.
To adjust the lumbar support, see
Lumbar Adjustment on page 3-4.
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.
Black plate (53,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
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Seats and Restraints 3-53
2. For forward-facing childrestraints, 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). 2.1.3. 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.
Black plate (54,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
3-54 Seats and Restraints
2.3.2. Route the toptether (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.
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 safety 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.
Black plate (55,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
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Seats and Restraints 3-55
3. For forward-facing childrestraints, 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). 3.1.3. 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.
Black plate (56,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
3-56 Seats and Restraints
3.3.2. Route the toptether (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. 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.
Black plate (57,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
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Seats and Restraints 3-57
To remove the headrest:
1. Press both buttons on theheadrest 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.
Replacing LATCH System
Parts After a Crash
{Warning
A 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.
Black plate (68,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299746) - 2015 - crc - 11/11/13
3-68 Seats and Restraints
In Canada, the law requires that
forward-facing child restraints have
a top tether, and that the tether be
attached.
If the child restraint does not have
the LATCH system, you will be
using the safety belt to secure the
child restraint in this position. Be
sure to follow the instructions that
came with the child restraint. Secure
the child in the child restraint when
and as the instructions say.
If more than one child restraint
needs to be installed in the rear
seat, be sure to readWhere to Put
the Restraint on page 3-43.
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) on page 3-45. 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 safety belt through
or around the restraint. The child
restraint instructions will show
you how.
4. Push the latch plate into thebuckle until it clicks.
Position the release button on
the buckle so that the safety belt
could be quickly unbuckled if
necessary.
5. Pull the shoulder belt all the wayout 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.
Black plate (69,1)GMC Sierra Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
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Seats and Restraints 3-69
6. To tighten the belt, push downon the child restraint, pull the
shoulder portion of the belt to
tighten the lap portion of the belt,
and feed the shoulder belt back
into the retractor. When installing
a forward-facing child restraint, it
may be helpful to use your knee
to push down on the child
restraint as you tighten the belt.
Try to pull the belt out of the
retractor to make sure the
retractor is locked. If the
retractor is not locked, repeat
Steps 4 and 5. 7. 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) on
page 3-45.
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
safety 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 safety 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”
underLower Anchors
and Tethers for Children (LATCH
System) on page 3-45 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 safety belt through
or around the restraint. The child
restraint instructions will show
you how.