2016 GMC ACADIA ECU

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
24 In Brief
Universal Remote System
If equipped, the Universal Home
Remote System allows for garage
door openers, security systems, and
home automation devices to be
programmed to work with these
buttons in the vehicle.
SeeUniversal Remote System
0 146.
Sunroof
The ignition must be in ON/RUN or
ACC/ACCESSORY, or Retained
Accessory Power (RAP) must be
active to operate the sunroof and
power sunshade. See Retained
Accessory Power (RAP) 0208.
The vehicle may have a sunroof
over the front seats and a rear
sunroof over the second row seats.
The rear sunroof does not open.
Vent : Press the front or rear of the
switch to vent or close the sunroof.
Express-open/Express-close :
Press and release the rear or front
of the switch to express-open or
express-close the sunroof.
Manual Sunshade
The sunshades must be opened
and closed manually. To open the
sunshade, press the button on the
sunshade handle to release it and
guide it back. To close the
sunshade, pull the sunshade
forward until it latches.
See Sunroof 045.
Performance and
Maintenance
Traction Control/
Electronic Stability
Control
The vehicle has a traction control
system that limits wheel spin, and
the StabiliTrak system that assists
with directional control of the vehicle
in difficult driving conditions. Both
systems turn on automatically every
time the vehicle is started.
.
To turn off traction control and
StabiliTrak, press and release
4
on the center stack, and the
appropriate DIC message
displays. See Ride Control
System Messages 0136.
. Press and release
4again to
turn on both systems.
See Traction Control/Electronic
Stability Control 0217.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
Keys, Doors, and Windows 27
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 29
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . 29
Remote Vehicle Start . . . . . . . . . . 31
Door Locks . . . . . . . . . . . . . . . . . . . . 32
Power Door Locks . . . . . . . . . . . . . 33
Delayed Locking . . . . . . . . . . . . . . . 33
Automatic Door Locks . . . . . . . . . 34
Lockout Protection . . . . . . . . . . . . . 34
Safety Locks . . . . . . . . . . . . . . . . . . . 34
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 35
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 38
Vehicle Alarm System . . . . . . . . . 38
Immobilizer . . . . . . . . . . . . . . . . . . . . 39
Immobilizer Operation . . . . . . . . . 39
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 40
Power Mirrors . . . . . . . . . . . . . . . . . . 41 Folding Mirrors . . . . . . . . . . . . . . . . . 41
Heated Mirrors . . . . . . . . . . . . . . . . . 42
Automatic Dimming Mirror . . . . . 42
Park Tilt Mirrors . . . . . . . . . . . . . . . . 42
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 42
Manual Rearview Mirror . . . . . . . . 42
Automatic Dimming Rearview
Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 43
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 43
Power Windows . . . . . . . . . . . . . . . 43
Sun Visors . . . . . . . . . . . . . . . . . . . . . 45
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 45
Keys and Locks
Keys
{Warning
Leaving children in a vehicle with
the ignition key 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 keys in the
ignition, and children or others
could be caught in the path of a
closing window. Do not leave
children in a vehicle with the
ignition key.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
34 Keys, Doors, and Windows
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 doors
immediately.
This feature can also be
programmed. See Vehicle
Personalization 0140.
Automatic Door Locks
The doors will lock automatically
when all doors are closed, the
ignition is on, and the shift lever is
moved out of P (Park).
To unlock the doors:
.
Press
Kon a door.
. Shift the transmission into
P (Park). Automatic door unlocking can be
programmed through the Driver
Information Center (DIC). See
Vehicle Personalization
0140.
Lockout Protection
When locking is requested with the
driver door open and the key in the
ignition, all the doors will lock and
then the driver door will unlock.
This can be manually overridden by
pressing and holding
Qon the
power door lock switch.
Safety Locks
Caution
Pulling the inside door handle
while the rear door safety locks
are engaged could damage your
vehicle. Do not pull the inside
door handle while the rear door
safety locks are engaged. The vehicle has rear door security
locks to prevent passengers from
opening the rear doors from the
inside.
Open the rear doors to access the
security locks on the inside edge of
each door.
To set the locks, insert a key into
the slot and turn it to the horizontal
position. The door can only be
opened from the outside with the
door unlocked. To return the door to
normal operation, turn the slot to the
vertical position.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
38 Keys, Doors, and Windows
Vehicle Security
This vehicle has theft-deterrent
features; however, they do not make
the vehicle impossible to steal.
Vehicle Alarm System
On vehicles with an anti-theft alarm
system, to activate the system:
.Press
Qon the Remote Keyless
Entry (RKE) transmitter or the
power door lock switch when
any door is open.
The security light flashes.
When the door is closed, the
security light stops flashing and
stays on solid for approximately
30 seconds. The content
theft-deterrent alarm is not
armed until the security light
goes off. If the delayed locking feature is
active, the alarm is not activated
until all doors are closed and the
security light goes off.
. Press
Qwhen the driver door is
closed. The security light comes
on solid for approximately
30 seconds and then goes off.
The content theft-deterrent alarm
is not armed until the security
light goes off.
The theft-deterrent system will not
activate if the doors are locked with
the vehicle's key or the manual
door lock.
If the driver door is opened without
first unlocking with the RKE
transmitter, the horn will chirp and
the lights will flash to indicate
pre-alarm. If the vehicle is not
started, or the door is not unlocked
by pressing
Kon the RKE
transmitter during the 10-second
pre-alarm, the alarm will be
activated.
The alarm will also be activated if a
passenger door, the liftgate, or the
hood is opened without first disarming the system. When the
alarm is activated, the turn signals
flash and the horn sounds for about
30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
The vehicle can be started with the
correct ignition key if the alarm has
been set off.
To avoid setting off the alarm by
accident:
.
Lock the vehicle with the door
key after the doors are closed.
. Unlock the door with the RKE
transmitter. Unlocking a door any
other way sets off the alarm if
the system has been armed.
Press
Kor place the key in the
ignition and turn it to START to turn
off the alarm.
Testing the Alarm
To test the alarm:
1. From inside the vehicle, lower the driver side window, and
open the driver door.
2. Press
Q.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
Keys, Doors, and Windows 39
3. Get out of the vehicle, closethe door, and wait for the
security light to go out.
4. Reach in through the window, unlock the door with the
manual door lock, and open
the door. This should set off the
alarm.
If the alarm does not sound when it
should, but the headlamps flash,
check to see if the horn works. The
horn fuse may be blown. To replace
the fuse, see Fuses and Circuit
Breakers 0265.
If the alarm does not sound or the
headlamps do not flash, see your
dealer for service.
Immobilizer
See Radio Frequency Statement
0 346.
Immobilizer Operation
This vehicle has PASS-Key®III+
(Personalized Automotive Security
System) theft-deterrent system.
PASS-Key III+ is a passive
theft-deterrent system. The system is automatically armed
when the key is removed from the
ignition.
The system is automatically
disarmed when the key is turned to
ON/RUN, ACC/ACCESSORY,
or START from the LOCK/OFF
position.
You do not have to manually arm or
disarm the system.
The security light comes on if there
is a problem with arming or
disarming the theft-deterrent
system.
When the PASS-Key III+ system
senses an incorrect key, the vehicle
does not start. Anyone using a
trial-and-error method to start the
vehicle will be discouraged because
of the high number of electrical key
codes.
If the engine does not start and the
security light on the instrument
panel comes on when trying to start
the vehicle, there may be a problem
with the theft-deterrent system. Turn
the ignition off and try again.
If the engine still does not start, and
the key appears to be undamaged,
try another ignition key and check
the fuses. See
Fuses and Circuit
Breakers 0265 for additional
information. If the engine still does
not start with the other key, the
vehicle needs service. If the vehicle
does start, the first key may be
faulty. See your dealer who can
service the PASS-Key III+ to have a
new key made. In an emergency,
contact Roadside Assistance. See
Roadside Assistance Program
0 340.
It is possible for the PASS-Key III+
decoder to learn the transponder
value of a new or replacement key.
Up to 10 keys may be programmed
to the vehicle. The following
procedure is for programming
additional keys only. If all currently
programmed keys are lost or do not
operate, you must see your dealer
or a locksmith who can service
PASS-Key III+ to have keys made
and programmed to the system.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
40 Keys, Doors, and Windows
See your dealer or a locksmith who
can service PASS-Key III+ to get a
new key blank that is cut exactly as
the ignition key that operates the
system.
To program the new additional key:1. Verify that the new key has a
1stamped on it.
2. Insert the already programmed key in the ignition and start the
engine. If the engine does not
start, see your dealer for
service.
3. After the engine has started, turn the key to LOCK/OFF, and
remove the key.
4. Insert the key to be programmed and turn it to the
ON/RUN position within
five seconds of the original key
being turned to the LOCK/OFF
position.
The security light turns off once
the key has been programmed.
5. Repeat Steps 1–4 if additional keys are to be programmed. If the PASS-Key III+ key is lost or
damaged, see your dealer or a
locksmith to have a new key made.
The SERVICE THEFT
DETERRENT SYSTEM message
displays on the Driver Information
Center (DIC) when there is a
problem with the theft-deterrent
system. See
Security Messages
0 137 for additional information.
Do not leave the key 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 into the right lane,
you could hit a vehicle on the
right. Check the inside mirror or
glance over your shoulder before
changing lanes.
The passenger side mirror is convex
shaped. A convex mirror's surface is
curved so more can be seen from
the driver seat.

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
Seats and Restraints 47
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 48
Front Seats
Seat Adjustment . . . . . . . . . . . . . . . 49
Power Seat Adjustment . . . . . . . . 50
Lumbar Adjustment . . . . . . . . . . . . 50
Reclining Seatbacks . . . . . . . . . . . 51
Memory Seats . . . . . . . . . . . . . . . . . 52
Heated and Cooled FrontSeats . . . . . . . . . . . . . . . . . . . . . . . . . 53
Rear Seats
Rear Seats . . . . . . . . . . . . . . . . . . . . 54
Third Row Seats . . . . . . . . . . . . . . . 56
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . . . 59
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . . 60
Lap-Shoulder Belt . . . . . . . . . . . . . 61
Safety Belt Use During Pregnancy . . . . . . . . . . . . . . . . . . . . 65
Safety Belt Extender . . . . . . . . . . . 65
Safety System Check . . . . . . . . . . 65
Safety Belt Care . . . . . . . . . . . . . . . 66 Replacing Safety Belt System
Parts after a Crash . . . . . . . . . . . 66
Airbag System
Airbag System . . . . . . . . . . . . . . . . . 67
Where Are the Airbags? . . . . . . . 68
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . 70
What Makes an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . 71
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . . . 71
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . 71
Passenger Sensing System . . . 73
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . 77
Adding Equipment to the Airbag-Equipped Vehicle . . . . . 77
Airbag System Check . . . . . . . . . . 78
Replacing Airbag System Parts after a Crash . . . . . . . . . . . . . . . . . 78
Child Restraints
Older Children . . . . . . . . . . . . . . . . . 79
Infants and Young Children . . . . 80
Child Restraint Systems . . . . . . . 83
Where to Put the Restraint . . . . . 84
Lower Anchors and Tethers forChildren (LATCH System) . . . . 86 Replacing LATCH System Parts
After a Crash . . . . . . . . . . . . . . . . . 92
Securing Child Restraints (Rear Seat) . . . . . . . . . . . . . . . . . . . 92
Securing Child Restraints (Front
Passenger Seat) . . . . . . . . . . . . . 94

GMC Acadia/Acadia Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9159268) - 2016 - crc - 7/31/15
58 Seats and Restraints
Warning (Continued)
sure that the safety belts are
properly routed and attached, and
are not twisted.
3. Reconnect the center safety belt mini-latch to the
mini-buckle. Do not let it twist.
4. Pull on the safety belt to be sure the mini-latch is secure.
Removing the Third Row Seats
To remove a third row seat:
1. Remove the cargo management system, if it is
installed. See Cargo
Management System 0100.
2. Remove anything on or under the seat.
Caution
Folding a rear seat with the safety
belts still fastened may cause
damage to the seat or the safety
(Continued)
Caution (Continued)
belts. Always unbuckle the safety
belts and return them to their
normal stowed position before
folding a rear seat.
3. Fold the seatback down. See “Folding the Seatback” earlier
in this section.
4. Remove the rear bolts on the floor on each side of the seat.
5. Remove the seat by tilting it slightly upward, and then
pulling it out of the rear of the
vehicle in one motion.
6. Replace the bolts in the floor holes for storage.
Installing the Third Row Seats
To reinstall a third row seat:
1. Before installing the seat, the seatback must be folded
forward. See “Folding the
Seatback” earlier in this
section. The seats must be placed in
the proper locations to attach
correctly. The wider seat must
be installed on the driver side
and the narrower seat on the
passenger side. Remove the
bolts from the holes in the floor
before installing the seats.
2. Place the seat on the vehicle floor so that the front seat
hooks are on the vehicle bars.
3. Reinstall the bolts, and torque to 55 Y(41 lb ft). Pull up on
the seat to make sure it is
locked in place.
4. Raise the seatback to its upright position. Push and pull
on the seatback to make sure it
is locked into place.
5. Reconnect the center safety belt mini-latch to the
mini-buckle. Do not let it twist.