roof GMC ACADIA 2021 Owner's Manual

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
6 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Remote Keyless Entry (RKE) System . . . . . 7
Remote Keyless Entry (RKE) SystemOperation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Remote Vehicle Start . . . . . . . . . . . . . . . . . . . 13
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . 17
Delayed Locking . . . . . . . . . . . . . . . . . . . . . . . . 17
Automatic Door Locks . . . . . . . . . . . . . . . . . . . 17
Lockout Protection . . . . . . . . . . . . . . . . . . . . . . 17
Safety Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 25
Vehicle Alarm System . . . . . . . . . . . . . . . . . . 25
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Immobilizer Operation . . . . . . . . . . . . . . . . . . 26
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 27
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . 28
Automatic Dimming Mirror . . . . . . . . . . . . . 28
Reverse Tilt Mirrors . . . . . . . . . . . . . . . . . . . . . 28
Interior Mirrors
Interior Rearview Mirrors . . . . . . . . . . . . . . . 28
Manual Rearview Mirror . . . . . . . . . . . . . . . . 28
Automatic Dimming Rearview Mirror . . . 28
Rear Camera Mirror . . . . . . . . . . . . . . . . . . . . 28
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power Windows . . . . . . . . . . . . . . . . . . . . . . . . 31
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with a
Remote Keyless Entry (RKE) transmitter is
dangerous and children or others could
be seriously injured or killed. They could
operate the power windows or other
controls or make the vehicle move. The
windows will function with the RKE
transmitter in the vehicle, and children or
others could be caught in the path of a
closing window. Do not leave children in
a vehicle with an RKE transmitter.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
20 Keys, Doors, and Windows
If equipped, the power liftgate switch is on
the driver door. The vehicle must be in
P (Park). The taillamps flash when the power
liftgate moves.
The modes are:
.MAX: Opens to maximum height.
.3/4: Opens to a reduced height that can
be set from 3/4 to fully open. Use to
prevent the liftgate from opening into
overhead obstructions such as a garage
door or roof-mounted cargo. The liftgate
can be manually opened all the way.
.OFF: Opens manually only.
To power open or close the liftgate, select
MAX or 3/4 mode.
.Pressbtwice quickly on the RKE
transmitter until the liftgate moves.
.Press8on the driver door. The driver
door must either be unlocked or locked
without the security armed.
.Press the touch pad on the bottom of the
liftgate after unlocking all doors.
If equipped with Keyless Access, a locked
vehicle can be opened if the RKE
transmitter is within 1 m (3 ft) of the
touch pad.
Presslon the bottom of the liftgate
next to the pull cup to close. Press any liftgate button, the touch pad,
or
bon the RKE transmitter while the
liftgate is moving to stop it. Pressing any
liftgate button or pressing
btwice quickly
on the RKE transmitter again restarts the
operation in the reverse direction. Pressing
the touch pad on the liftgate handle will
restart the motion, but only in the opening
direction.
Caution
Manually forcing the liftgate to open or
close during a power cycle can damage
the vehicle. Allow the power cycle to
complete.
The power liftgate may be temporarily
disabled under extreme low temperatures,
or after repeated power cycling over a short
period of time. If this occurs, the liftgate can
still be operated manually.
If the vehicle is shifted out of P (Park) while
the power function is in progress, the
liftgate will continue to completion. If the
vehicle is accelerated before the liftgate has
completed moving, the liftgate may stop or
reverse direction. Check for Driver

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Keys, Doors, and Windows 31
.The camera’s mounting on the vehicle has
been damaged, and/or the position or the
mounting angle of the camera has
changed.
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 a pulsing sound when one
window is down and the other three are up.
To reduce the sound, open another window
or the sunroof, if equipped.
Power Windows
{Warning
Children could be seriously injured or
killed if caught in the path of a closing
window. Never leave the Remote Keyless
Entry (RKE) transmitter in a vehicle with
children. When there are children in the
rear seat, use the window lockout switch
to prevent operation of the windows. See
Keys06.
Power windows work when the ignition is
on, in ACC/ACCESSORY, or when Retained
Accessory Power (RAP) is active. See
Retained Accessory Power (RAP) 0217.
Using the window switch, press to open or
pull to close the window.
The windows may be temporarily disabled if
they are used repeatedly within a
short time.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Keys, Doors, and Windows 33
Sun Visors
Pull the sun visor down to block glare.
Detach the sun visor from the center mount
to pivot to the side window and,
if equipped, extend along the rod.
Roof
Sunroof
If equipped, the ignition must be on or in
ACC/ACCESSORY, or Retained Accessory
Power (RAP) must be active to operate the
sunroof. SeeIgnition Positions 0213 and
Retained Accessory Power (RAP) 0217.
1. Sunroof Switch (SLIDE)
2. Vent Switch (TILT)
Slide Switch
Express-Open/Express-Close : Press and
release
D(1) to express-open the sunroof.
The sunshade will not open automatically.
Press and release
g(1) to express-close
the sunroof.
Open/Close (Manual Mode) : Fully
press
D(1) to open the sunroof. The
sunshade will not automatically open with
the sunroof. Release to stop at the desired
position. Fully press
g(1) to close the
sunroof. Release to stop at the desired
position. Tilt Switch
Vent Feature :
Press
E(2) to vent the
sunroof. Press again and hold to open the
sunroof. Release to stop at the desired
position. The sunshade will not open
automatically. Press
g(2) to
express-close the sunroof. Press again to
stop the movement.
The front sunshade can only be opened and
closed manually. The sunshade can be
opened by pushing up on the handle, and
closed by pulling forward on the handle
until it latches. Do not try to close the
sunshade while the sunroof is fully opened
or in the vent position.
If equipped, the rear sunshade can only be
opened or closed manually. To open, press
the latch button (if equipped) on the handle
while pushing up to unlatch it. The
sunshade will retract to the open position.
To close the sunshade, pull the handle
forward until it latches.
The sunroof cannot be opened or closed if
the vehicle has an electrical failure.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
34 Keys, Doors, and Windows
Automatic Reversal System
The sunroof has an automatic reversal
system that is only active when the sunroof
is operated in express-close mode.
If an object is in the path while express
closing, the reversal system will detect an
object, stop, and open the sunroof again.
If frost or other conditions prevent closing,
override the feature by closing the sunroof
in manual mode. To stop movement, release
the switch.
Dirt and debris may collect on the sunroof
seal or in the track. This could cause an
issue with sunroof operation or noise.It could also plug the water drainage
system. Periodically open the sunroof and
remove any obstacles or loose debris. Wipe
the sunroof seal and roof sealing area using
a clean cloth, mild soap, and water. Do not
remove grease from the sunroof.
If water is seen dripping into the water
drainage system, this is normal.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
54 Seats and Restraints
After a minor crash, replacement of seat
belts may not be necessary. But the seat
belt assemblies that were used during any
crash may have been stressed or damaged.
See your dealer to have the seat belt
assemblies inspected or replaced.
New parts and repairs may be necessary
even if the seat belt system was not being
used at the time of the crash.
Have the seat belt pretensioners checked if
the vehicle has been in a crash, or if the
airbag readiness light stays on after you
start the vehicle or while you are driving.
SeeAirbag Readiness Light 0105.
Airbag System
The vehicle has the following airbags:
.A frontal airbag for the driver
.A frontal airbag for the front outboard
passenger
.A knee airbag for the driver
.A front center airbag for the driver and
front outboard passenger
.A seat-mounted side impact airbag for the
driver
.A seat-mounted side impact airbag for the
front outboard passenger
.A roof-rail airbag for the driver and for
the second and third row passengers
seated directly behind the driver
.A roof-rail airbag for the front outboard
passenger and the second and third row
passengers seated directly behind the
front outboard passenger
All vehicle airbags have the word AIRBAG on
the trim or on a label near the deployment
opening.
For frontal airbags, the word AIRBAG is on
the center of the steering wheel for the
driver and on the instrument panel for the
front outboard passenger.
For knee airbags, the word AIRBAG is on the
lower part of the instrument panel.
For the front center airbag, the word AIRBAG
is on the inboard side of the driver seatback.
For seat-mounted side impact airbags, the
word AIRBAG is on the side of the seatback
or side of the seat closest to the door.
For roof-rail airbags, the word AIRBAG is on
the ceiling or trim.
Airbags are designed to supplement the
protection provided by seat belts. Even
though today's airbags are also designed to help reduce the risk of injury from the force
of an inflating bag, all airbags must inflate
very quickly to do their job.
Here are the most important things to know
about the airbag system:
{Warning
You can be severely injured or killed in a
crash if you are not wearing your seat
belt, even with airbags. Airbags are
designed to work with seat belts, not
replace them. Also, airbags are not
designed to inflate in every crash. In
some crashes seat belts are the only
restraint. See
When Should an Airbag
Inflate? 057.
Wearing your seat belt during a crash
helps reduce your chance of hitting
things inside the vehicle or being ejected
from it. Airbags are “supplemental
restraints” to the seat belts. Everyone in
the vehicle should wear a seat belt
properly, whether or not there is an
airbag for that person.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Seats and Restraints 55
{Warning
Because airbags inflate with great force
and faster than the blink of an eye,
anyone who is up against, or very close
to any airbag when it inflates can be
seriously injured or killed. Do not sit
unnecessarily close to any airbag, as you
would be if sitting on the edge of the
seat or leaning forward. Seat belts help
keep you in position before and during a
crash. Always wear a seat belt, even with
airbags. The driver should sit as far back
as possible while still maintaining control
of the vehicle. The seat belts and the
front outboard passenger airbags are
most effective when you are sitting well
back and upright in the seat with both
feet on the floor.
Occupants should not lean on or sleep
against the front center armrest or
console in vehicles with a front center
airbag.
Occupants should not lean on or sleep
against the door or side windows in
seating positions with seat-mounted side
impact airbags and/or roof-rail airbags.
{Warning
Children who are up against, or very
close to, any airbag when it inflates can
be seriously injured or killed. Always
secure children properly in the vehicle. To
read how, seeOlder Children 064 or
Infants and Young Children 066.
There is an airbag readiness light on the
instrument cluster, which shows the airbag
symbol.
The system checks the airbag electrical
system for malfunctions. The light tells you
if there is an electrical problem. See Airbag
Readiness Light 0105.
Where Are the Airbags?
The driver frontal airbag is in the center of
the steering wheel.
The front outboard passenger frontal airbag
is in the passenger side instrument panel.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
56 Seats and Restraints
The driver knee airbag is below the steering
column.
The front center airbag is in the inboard side
of the driver seatback.
Driver Side Shown, Passenger Side Similar
The seat-mounted side impact airbags for
the driver and front outboard passenger are
in the sides of the seatbacks closest to
the door.Driver Side Shown, Passenger Side Similar
The roof-rail airbags for the driver, front
outboard passenger, and second and third
row outboard passengers are in the ceiling
above the side windows.
{Warning
If something is between an occupant and
an airbag, the airbag might not inflate
properly or it might force the object into
that person causing severe injury or even
death. The path of an inflating airbag
must be kept clear. Do not put anything
between an occupant and an airbag, and (Continued)

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Seats and Restraints 57
Warning (Continued)
do not attach or put anything on the
steering wheel hub or on or near any
other airbag covering.
Do not use seat or console accessories
that block the inflation path of a
seat-mounted side impact airbag or the
front center airbag.
Never secure anything to the roof of a
vehicle with roof-rail airbags by routing a
rope or tie-down through any door or
window opening. If you do, the path of
an inflating roof-rail airbag will be
blocked.
When Should an Airbag Inflate?
This vehicle is equipped with airbags. See
Airbag System054. Airbags are designed to
inflate if the impact exceeds the specific
airbag system's deployment threshold.
Deployment thresholds are used to predict
how severe a crash is likely to be in time
for the airbags to inflate and help restrain
the occupants. The vehicle has electronic
sensors that help the airbag system determine the severity of the impact.
Deployment thresholds can vary with
specific vehicle design.
Frontal airbags are designed to inflate in
moderate to severe frontal or near frontal
crashes to help reduce the potential for
severe injuries, mainly to the driver's or
front outboard passenger's head and chest.
Whether the frontal airbags will or should
inflate is not based primarily on how fast
the vehicle is traveling. It depends on what
is hit, the direction of the impact, and how
quickly the vehicle slows down.
Frontal airbags may inflate at different crash
speeds depending on whether the vehicle
hits an object straight on or at an angle,
and whether the object is fixed or moving,
rigid or deformable, narrow or wide.
Frontal airbags are not intended to inflate
during vehicle rollovers, in rear impacts,
or in many side impacts.
In addition, the vehicle has advanced
technology frontal airbags. Advanced
technology frontal airbags adjust the
restraint according to crash severity.
Knee airbags are designed to inflate in
moderate to severe frontal or near frontal
impacts. Knee airbags are not designed to
inflate during vehicle rollovers, in rear
impacts, or in many side impacts.
The front center airbag is designed to inflate
in moderate to severe side crashes
depending upon the location of the impact,
when either side of the vehicle is struck. In
addition, the front center airbag is designed
to inflate when the sensing system predicts
that the vehicle is about to roll over on its
side or in some moderate to severe frontal
or near-frontal impacts. The front center
airbag is not designed to inflate in rear
impacts.
Seat-mounted side impact airbags are
designed to inflate in moderate to severe
side crashes, depending on the location of
the impact. These airbags are also designed
to inflate in some moderate to severe
frontal or near-frontal impacts that could
result in the occupant moving toward the
side of the vehicle. Seat-mounted side
impact airbags are not designed to inflate in
rollovers, or rear impacts. A seat-mounted
side impact airbag is designed to inflate on
the side of the vehicle that is struck.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
58 Seats and Restraints
Roof-rail airbags are designed to inflate in
moderate to severe side crashes depending
on the location of the impact. In addition,
these roof-rail airbags are designed to inflate
during a rollover or in a severe frontal
impact. Roof-rail airbags are not designed to
inflate in rear impacts. Both roof-rail airbags
will inflate when either side of the vehicle is
struck, if the sensing system predicts that
the vehicle is about to roll over on its side,
or in a severe frontal impact.
In any particular crash, no one can say
whether an airbag should have inflated
simply because of the vehicle damage or
repair costs.
What Makes an Airbag Inflate?
In a deployment event, the sensing system
sends an electrical signal triggering a release
of gas from the inflator. Gas from the
inflator fills the airbag causing the bag to
break out of the cover. The inflator, the
airbag, and related hardware are all part of
the airbag module.
For airbag locations, seeWhere Are the
Airbags? 055.
How Does an Airbag Restrain?
In moderate to severe frontal or near frontal
collisions, even belted occupants can contact
the steering wheel or the instrument panel.
In moderate to severe side collisions, even
belted occupants can contact the inside of
the vehicle.
Airbags supplement the protection provided
by seat belts by distributing the force of the
impact more evenly over the
occupant's body.
Rollover capable roof-rail airbags are
designed to help contain the head and chest
of occupants in the outboard seating
positions in the first, second, and third rows.
The rollover capable roof-rail airbags are
designed to help reduce the risk of full or
partial ejection in rollover events, although
no system can prevent all such ejections.
But airbags would not help in many types
of collisions, primarily because the
occupant's motion is not toward those
airbags. See When Should an Airbag Inflate?
0 57.
Airbags should never be regarded as
anything more than a supplement to seat
belts.
What Will You See after an
Airbag Inflates?
After frontal, knee, and seat-mounted side
impact airbags inflate, they quickly deflate,
so quickly that some people may not even
realize the airbags inflated. The front center
airbag and roof-rail airbags may still be at
least partially inflated for some time after
they inflate. Some components of the airbag
module may be hot for several minutes. For
location of the airbags, see Where Are the
Airbags? 055.
The parts of the airbag that come into
contact with you may be warm, but not too
hot to touch. There may be some smoke
and dust coming from the vents in the
deflated airbags. Airbag inflation does not
prevent the driver from seeing out of the
windshield or being able to steer the
vehicle, nor does it prevent people from
leaving the vehicle.
{Warning
When an airbag inflates, there may be
dust in the air. This dust could cause
breathing problems for people with a
history of asthma or other breathing (Continued)