2017 GMC SIERRA 1500 child seat

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
12 In Brief
PressCto ventilate the driver or
passenger seat.
See Heated and Ventilated Front
Seats 055.
Head Restraint
Adjustment
Do not drive until the head restraints
for all occupants are installed and
adjusted properly.
To achieve a comfortable seating
position, change the seatback
recline angle as little as necessary
while keeping the seat and the head
restraint height in the proper
position.
See Head Restraints 051 and
Power Seat Adjustment 052.
Safety Belts
Refer to the following sections for
important information on how to use
safety belts properly:
.
Safety Belts 059.
. How to Wear Safety Belts
Properly 060.
. Lap-Shoulder Belt 061.
. Lower Anchors and Tethers for
Children (LATCH System) 088.
Passenger Sensing
System
The passenger sensing system,
if equipped, turns off the front
outboard passenger frontal airbag
under certain conditions. No other
airbag is affected by the passenger
sensing system.
If the vehicle has one of the
indicators pictured in the following
illustrations, then the vehicle has a
passenger sensing system for the
front outboard passenger position
unless there is an airbag off switch
on the instrument panel endcap.
If there is an airbag off switch, the
vehicle does not have a passenger
sensing system. See Airbag On-Off
Switch 073 for more information.
The passenger airbag status
indicator will be visible on the
overhead console when the vehicle
is started.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
46 Keys, Doors, and Windows
Windows
{Warning
Never leave a child, a helpless
adult, or a pet alone in a vehicle,
especially with the windows
closed in warm or hot weather.
They can be overcome by the
extreme heat and suffer
permanent injuries or even death
from heat stroke.
The vehicle aerodynamics are
designed to improve fuel economy
performance. This may result in apulsing sound when either rear
window is down and the front
windows are up. To reduce the
sound, open either a front window
or the sunroof, if equipped.
Manual Windows
If equipped, turn the hand crank on
each door to manually raise or lower
the manual windows.
Power Windows
{Warning
Children could be seriously
injured or killed if caught in the
path of a closing window. Never
leave keys in a vehicle with
children. When there are children
in the rear seat, use the window
lockout button to prevent
operation of the windows. See
Keys
028.
Crew/Double Cab Premium Trim
Shown, Other Models Similar
The windows work when the vehicle
is in ON/RUN, ACC/ACCESSORY,
or Retained Accessory Power
(RAP). See Retained Accessory
Power (RAP) 0262.
Press or pull the switch to open or
close the window.
The windows will be temporarily
disabled if the window switches are
used repeatedly within a short time.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
50 Seats and Restraints
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 51
Front Seats
Power Seat Adjustment . . . . . . . . 52
Lumbar Adjustment . . . . . . . . . . . . 52
Reclining Seatbacks . . . . . . . . . . . 53
Memory Seats . . . . . . . . . . . . . . . . . 54
Heated and Ventilated FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . 55
Rear Seats
Rear Seats (Double Cab FullBench) . . . . . . . . . . . . . . . . . . . . . . . 57
Rear Seats (Split Bench) . . . . . . 58
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . . . 59
How to Wear Safety Belts Properly . . . . . . . . . . . . . . . . . . . . . . 60
Lap-Shoulder Belt . . . . . . . . . . . . . 61
Safety Belt Use During Pregnancy . . . . . . . . . . . . . . . . . . . . 64
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . 64
Safety Belt Extender . . . . . . . . . . . 65
Safety System Check . . . . . . . . . . 65 Safety Belt Care . . . . . . . . . . . . . . . 65
Replacing Safety Belt System
Parts after a Crash . . . . . . . . . . . 66
Airbag System
Airbag System . . . . . . . . . . . . . . . . . 66
Where Are the Airbags? . . . . . . . 68
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . 69
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . 71
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . . . 71
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . 71
Airbag On-Off Switch . . . . . . . . . . 73
Passenger Sensing System . . . 75
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . 79
Adding Equipment to the Airbag-Equipped Vehicle . . . . . 79
Airbag System Check . . . . . . . . . . 80
Replacing Airbag System Parts after a Crash . . . . . . . . . . . . . . . . . 81
Child Restraints
Older Children . . . . . . . . . . . . . . . . . 81
Infants and Young Children . . . . 83
Child Restraint Systems . . . . . . . 85
Where to Put the Restraint . . . . . 87 Lower Anchors and Tethers for
Children (LATCH System) . . . . 88
Replacing LATCH System Parts After a Crash . . . . . . . . . . . . . . . . . 94
Securing Child Restraints (With
the Safety Belt in the
Rear Seat) . . . . . . . . . . . . . . . . . . . 95
Securing Child Restraints (With the Safety Belt in the Center
Front Seat) . . . . . . . . . . . . . . . . . . . 98
Securing Child Restraints (With the Safety Belt in the Front
Passenger Seat) . . . . . . . . . . . . . 98

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
52 Seats and Restraints
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) 088.
Front Seats
Power Seat Adjustment
To adjust a power seat:
.
Move the seat forward or
rearward by sliding the control
forward or rearward.
. Raise or lower the front part of
the seat cushion by moving the
front of the control up or down.
. Raise or lower the seat by
moving the rear of the control up
or down. To adjust the recline, see
Reclining
Seatbacks 053.
To adjust the lumbar support, see
Lumbar Adjustment 052.
Some vehicles are equipped with a
feature that activates a vibrating
pulse alert in the driver seat to help
the driver avoid crashes. See Driver
Assistance Systems 0290.
Lumbar Adjustment

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
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Seats and Restraints 57
Rear Seats
Rear Seats (Double Cab
Full Bench)
Rear Seat Reminder (Full
Bench Only)
Look in Rear Seat Reminder
Feature
If equipped, this message displays
under certain conditions indicating
there may be an item or passenger
in the rear seat. Check before
exiting the vehicle.
This feature will activate when a
second row door is opened while
the vehicle is on or up to 10 minutes
before the vehicle is turned on,
including if the vehicle was started
remotely. There will be an alert
when the vehicle is turned off. The
alert does not directly detect objects
in the rear seat; instead, under
certain conditions, it detects when a
rear door is opened and closed,
indicating that there may be
something in the rear seat.The feature is active only once each
time the vehicle is turned on and off,
and will require reactivation by
opening and closing the second row
doors. There may be an alert even
when there is nothing in the rear
seat; for example, if a child entered
the vehicle through the rear door
and left the vehicle without the
vehicle being shut off.
The feature can be turned on or off
through
Vehicle
Personalization 0155.
Folding the Rear Seat
Caution
Folding a rear seat with the safety
belts still fastened may cause
damage to the seat or the safety
belts. Always unbuckle the safety
belts and return them to their
normal stowed position before
folding a rear seat.
To fold the seat:1. Pull up on the front of the seat cushion while pulling down on
the release strap loop under
the seat cushion.
2. Pull the seat cushion up until it latches with the seatback.
3. Pull forward on the seat cushion to make sure it is
locked in place.
To unfold the seat: 1. Push the seat cushion rearward while pulling the
release strap loop under the
seat cushion. Pull the seat
cushion down until it latches.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
60 Seats and Restraints
Questions and Answers About
Safety Belts
Q: Will I be trapped in the vehicleafter a crash if I am wearing a
safety belt?
A: You could be—whether you are
wearing a safety belt or not.
Your chance of being conscious
during and after a crash, so you
can unbuckle and get out, is
much greater if you are belted.
Q: If my vehicle has airbags, why should I have to wear safety
belts?
A: Airbags are supplemental
systems only. They work with
safety belts —not instead of
them. Whether or not an airbag
is provided, all occupants still
have to buckle up to get the
most protection.
Also, in nearly all states and in
all Canadian provinces, the law
requires wearing safety belts.
How to Wear Safety Belts
Properly
This section is only for people of
adult size.
There are special things to know
about safety belts and children, and
there are different rules for smaller
children and infants. If a child will be
riding in the vehicle, see Older
Children 081 orInfants and Young
Children 083. Follow those rules for
everyone's protection.
It is very important for all occupants
to buckle up. Statistics show that
unbelted people are hurt more often
in crashes than those who are
wearing safety belts.
There are important things to know
about wearing a safety belt properly.
. Sit up straight and always keep
your feet on the floor in front
of you.
. Always use the correct buckle
for your seating position.
. Wear the lap part of the belt low
and snug on the hips, just
touching the thighs. In a crash,
this applies force to the strong
pelvic bones and you would be
less likely to slide under the lap
belt. If you slid under it, the belt
would apply force on your
abdomen. This could cause
serious or even fatal injuries.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
Seats and Restraints 61
.Wear the shoulder belt over the
shoulder and across the chest.
These parts of the body are best
able to take belt restraining
forces. The shoulder belt locks if
there is a sudden stop or crash.
{Warning
You can be seriously injured,
or even killed, by not wearing
your safety belt properly.
. Never allow the lap or
shoulder belt to become
loose or twisted.
. Never wear the shoulder
belt under both arms or
behind your back.
. Never route the lap or
shoulder belt over an
armrest.
Lap-Shoulder Belt
If the vehicle is a regular cab, then
all seating positions in the vehicle
have a lap-shoulder belt. If the
vehicle is a double or crew cab,
then all seating positions in the vehicle have a lap-shoulder belt
except for the center front
passenger position (if equipped),
which has a lap belt. See
Lap
Belt 064.
The following instructions explain
how to wear a lap-shoulder belt
properly. 1. Adjust the seat, if the seat is adjustable, so you can sit up
straight. To see how, see
“Seats” in the Index.2. Pick up the latch plate and pull
the belt across you. Do not let
it get twisted. The lap-shoulder belt may lock
if you pull the belt across you
very quickly. If this happens, let
the belt go back slightly to
unlock it. Then pull the belt
across you more slowly.
If the shoulder portion of a
passenger belt is pulled out all
the way, the child restraint
locking feature may be
engaged. If this happens, let
the belt go back all the way
and start again.
Engaging the child restraint
locking feature may affect the
passenger sensing system,
if equipped. See
Passenger
Sensing System 075.

GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9955992) - 2017 - crc - 5/3/16
64 Seats and Restraints
the seat. Sitting on the safety belt
can damage the webbing and
hardware.
Rear Safety Belt Comfort
Guides
Rear safety belt comfort guides may
provide added safety belt comfort
for older children who have
outgrown booster seats and for
some adults. When installed on a
shoulder belt, the comfort guide
positions the belt away from the
neck and head.
Comfort guides are available
through your dealer for the rear
outboard seating positions.
Instructions are included with the
guide.
Safety Belt Use During
Pregnancy
Safety belts work for everyone,
including pregnant women. Like all
occupants, they are more likely to
be seriously injured if they do not
wear safety belts.
A pregnant woman should wear a
lap-shoulder belt, and the lap
portion should be worn as low as
possible, below the rounding,
throughout the pregnancy.
The best way to protect the fetus is
to protect the mother. When a safety
belt is worn properly, it is more likely
that the fetus will not be hurt in a
crash. For pregnant women, as for
anyone, the key to making safety
belts effective is wearing them
properly.
Lap Belt
This section is only for the lap belt.
To learn how to wear a lap-shoulder
belt, seeLap-Shoulder Belt 061.
The vehicle may have a center
seating position with a lap safety
belt. The lap safety belt does not
have a retractor.
To make the belt longer, tilt the latch
plate and pull it along the belt.
Buckle, position, and release it the
same way as the lap part of a
lap-shoulder belt.