2021 GMC ACADIA ignition

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
14 Keys, Doors, and Windows
The climate control system will use the
previous settings during a remote start. The
rear defog may come on during a remote
start based on cold ambient conditions. The
rear fog indicator light does not come on
during a remote start.
If the vehicle has heated or ventilated seats,
they may come on during a remote start.
SeeHeated and Ventilated Front Seats 041.
If equipped with a remote start heated
steering wheel, the heated wheel will turn
on automatically in remote start along with
the heated seats when it is cold outside. See
Heated Steering Wheel 090.
Laws in some local communities may restrict
the use of remote starters. For example,
some laws may require a person using
remote start to have the vehicle in view.
Check local regulations for any
requirements.
Do not use remote start if the vehicle is low
on fuel as it may run out of fuel.
Other conditions can affect the performance
of the transmitter. See Remote Keyless Entry
(RKE) System 07. Starting the Engine Using Remote Start
1. Press and release
Qon the RKE
transmitter.
2. Immediately press and hold
/for at
least four seconds or until the turn
signal lamps flash. The turn signal lamps
flashing confirms the request to remote
start the vehicle has been received.
During the remote start the doors will be
locked and the parking lamps will remain
on as long as the engine is running.
The engine will shut off after 15 minutes
unless a time extension is done or the
vehicle is started.
3. With the RKE transmitter in the vehicle, press the brake pedal and start the
vehicle to drive.
Extending Engine Run Time
The engine run time can also be extended
by another 15 minutes, if during the first
15 minutes Steps 1 and 2 are repeated while
the engine is still running. An extension can
be requested 30 seconds after starting. This
provides a total of 30 minutes.
The remote start can only be extended once. When the remote start is extended, the
second 15-minute period is added on to the
first 15 minutes for a total of 30 minutes.
A maximum of two remote starts, or a
remote start with an extension, are allowed
between ignition cycles.
The vehicle must be started and then turned
off before the remote start procedure can be
used again.
Canceling a Remote Start
To cancel a remote start, do any of the
following:
.Press and hold/until the parking lamps
turn off.
.Turn on the hazard warning flashers.
.Turn the vehicle on and then off.
Conditions in Which Remote Start Will
Not Work
The remote start will not operate if any of
the following occur:
.A transmitter is in the vehicle.
.The ignition is on.
.The hood is not closed.
.The hazard warning flashers are on.
.There is an emission control system
malfunction.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Keys, Doors, and Windows 17
Power Door Locks
Q:Press to lock the doors.
K:Press to unlock the doors.
Delayed Locking
This feature delays the locking of the doors
until five seconds after all doors are closed.
Delayed locking can only be turned on when
the Open Door Anti Lock Out has been
turned off.
When
Qis pressed on the power door lock
switch while the door is open, a chime will
sound three times indicating delayed locking
is active. The doors will lock automatically
five seconds after all doors are closed. If a
door is reopened before that time, the
five-second timer will reset when all doors
are closed again.
Press
Qon the door lock switch again or
press
Qon the RKE transmitter to lock the
doors immediately.
This feature can also be programmed. See
Vehicle Personalization 0123.
Automatic Door Locks
The vehicle is programmed so that when the
doors are closed, the ignition is on, and the
vehicle is shifted out of P (Park), the doors
will lock.
If a vehicle door is unlocked and then
opened and closed, the doors will lock either
when your foot is removed from the brake
or the vehicle speed becomes faster than
13 km/h (8 mph).
To unlock the doors:
.PressKon a door.
.Shift the transmission into P (Park). Automatic door locking cannot be disabled.
Automatic door unlocking can be
programmed. See
Vehicle Personalization
0 123.
Lockout Protection
If the ignition is on or in ACC/ACCESSORY
and the power door lock switch is pressed
with the driver door open, all the doors will
lock and only the driver door will unlock.
If the vehicle is off and locking is requested
while a door is open, when all doors are
closed the vehicle will check for RKE
transmitters inside. If an RKE transmitter is
detected and the number of RKE
transmitters inside has not reduced, the
driver door will unlock and the horn will
chirp three times.
Lockout Protection can be manually
overridden by pressing and holding
Qon
the power door lock switch.
Open Door Anti Lock Out
If Open Door Anti Lock Out has been turned
on and the vehicle is off, the driver door is
open, and locking is requested, all the doors
will lock and the driver door will remain
unlocked. When this function is turned on,
the driver door will only lock when it is

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
26 Keys, Doors, and Windows
How to Detect a Tamper Condition
IfKis pressed and the horn chirps and the
lights flash three times, the alarm was
activated while the alarm system was
armed.
If the alarm system has been activated, a
message will appear on the Driver
Information Center (DIC).
Immobilizer
See Radio Frequency Statement 0371.
Immobilizer Operation
This vehicle has a passive theft-deterrent
system.
The system does not have to be manually
armed or disarmed.
The vehicle is automatically immobilized
when the vehicle is turned off.
The immobilization system is disarmed
when the ignition is on or in ACC/
ACCESSORY and a valid transmitter is
present in the vehicle.
The security light, in the instrument cluster,
comes on if there is a problem with arming
or disarming the theft-deterrent system.
The system has one or more RKE
transmitters matched to an immobilizer
control unit in your vehicle. Only a correctly
matched RKE transmitter will start the
vehicle. If the transmitter is ever damaged,
you may not be able to start your vehicle.
When trying to start the vehicle, the
security light may come on briefly when the
ignition is turned on.
If the engine does not start and the security
light stays on, there is a problem with the
system. Turn the ignition off and try again.
If the vehicle will not change ignition modes
(ACC/ACCESSORY, on, off), and the RKE
transmitter appears to be undamaged, try
another transmitter. Or, you may try placing
the transmitter in the transmitter pocket
located in the center console. See Remote
Keyless Entry (RKE) System Operation 07. If the ignition mode will not change with
the other transmitter or in the transmitter
pocket, your vehicle needs service. If the
ignition does change modes, the first
transmitter may be faulty. See your dealer
who can service the theft-deterrent system
and have a new RKE transmitter
programmed to the vehicle.
It is possible for the immobilizer system to
learn new or replacement RKE transmitters.
Up to eight transmitters can be
programmed for the vehicle. To program
additional transmitters, see
“Programming
Transmitters to the Vehicle” underRemote
Keyless Entry (RKE) System Operation 07.
Do not leave the transmitter or device that
disarms or deactivates the theft-deterrent
system in the vehicle.
Exterior Mirrors
Convex Mirrors
{Warning
A convex mirror can make things, like
other vehicles, look farther away than
they really are. If you cut too sharply (Continued)

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
32 Keys, Doors, and Windows
Window Lockout
This feature stops the rear passenger
windows from working.
Press
2to engage the rear window
lockout feature. The indicator light is on
when engaged.
Press
2again to disengage.
Window Express Movement
All windows can be opened without holding
the window switch. Press the switch down
fully and quickly release to express open the
window. If equipped, pull the window switch up fully
and quickly release to express close the
window.
Briefly press or pull the window switch in
the same direction to stop that window’s
express movement.
Window Automatic Reversal System
The express-close feature will reverse
window movement if it comes in contact
with an object. Extreme cold or ice could
cause the window to auto-reverse. The
window will operate normally after the
object or condition is removed.
Automatic Reversal System Override
{Warning
If automatic reversal system override is
active, the window will not reverse
automatically. You or others could be
injured and the window could be
damaged. Before using automatic reversal
system override, make sure that all
people and obstructions are clear of the
window path.
When the engine is on, override the
automatic reversal system by pulling and
holding the window switch if conditions
prevent it from closing.
Programming the Power Windows
Programming may be necessary if the
vehicle battery has been disconnected or
discharged. If the window is unable to
express-up, program each express-close
window:
1. Close all doors.
2. Turn the ignition on or to ACC/ ACCESSORY.
3. Partially open the window to be programmed. Then close it and continue
to pull the switch briefly after the
window has fully closed.
4. Open the window and continue to press the switch briefly after the window has
fully opened.
Remote Window Operation
If equipped, this feature allows all windows
to be opened remotely. If enabled in vehicle
personalization, press and hold
Kon the
Remote Keyless Entry (RKE) transmitter to
open all windows. See Vehicle
Personalization 0123.

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
Seats and Restraints 37
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. Lift the handle under the seat to unlock it.
2. Move the seat forward or rearward to adjust the seat position. 3. Release the handle to stop the seat from
moving.
4. Try to move the seat back and forth to be sure it is locked in place.
Seat Height Adjuster
If equipped, move the lever up or down to
manually raise or lower the seat.
Power Seat Adjustment
{Warning
The power seats will work with the
ignition off. Children could operate the
power seats and be injured. Never leave
children alone in the vehicle.
To adjust a power seat, if equipped:
.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 entire seat by moving
the rear of the control up or down.
To adjust the seatback, see Reclining
Seatbacks 038.
To adjust the lumbar support, see Lumbar
Adjustment 038.
Some vehicles are equipped with a feature
that activates a vibration in the driver seat
to help the driver avoid crashes. See Driver
Assistance Systems 0239.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-14608671) - 2021 - CRC - 10/26/20
Seats and Restraints 39
2. Move the seatback to the desiredposition, and then release the lever to
lock the seatback in place.
3. Push and pull on the seatback to make sure it is locked.
To return the seatback to the upright
position: 1. Lift the lever fully without applying pressure to the seatback, and the
seatback will return to the upright
position.
2. Push and pull on the seatback to make sure it is locked.
Power Reclining Seatbacks
.Tilt the top of the control rearward to
recline.
.Tilt the top of the control forward to
raise.
Memory Seats
If equipped, memory seats allow two drivers
to save and recall their unique seat positions
for driving the vehicle, and a shared exit
position for getting out of the vehicle. Other
feature positions may also be saved, such as
power mirrors and power steering wheel,
if equipped. Memory positions are linked to
RKE transmitter 1 or 2 for automatic
memory recalls. Before saving, adjust all available memory
feature positions. Turn the vehicle on and
then press and release SET; a beep will
sound. Then immediately press and hold 1,
2, or
B(Exit) until two beeps sound. To
manually recall these positions, press and
hold 1, 2, or
Buntil the saved position is
reached. Follow the instructions under
“Saving Memory Positions.”
The vehicle identifies the current driver’s RKE
transmitter number (1–8). See Remote
Keyless Entry (RKE) System Operation 07.
Only RKE transmitters 1 and 2 can be used
for automatic memory recalls. A Driver
Information Center (DIC) welcome message
indicating the transmitter number may
display for the first few ignition cycles
following a transmitter change. For Seat
Entry Memory to work properly, save the
positions to the memory button (1 or 2)
matching the RKE transmitter number
displayed in the DIC welcome message.
Carry the linked RKE transmitter when
entering the vehicle.
Vehicle Personalization Settings
.To have the Seat Entry Memory
movement begin when the vehicle is
started, select the Settings menu, then