2016 GMC TERRAIN ECU

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
In Brief 21
Universal Remote System
If equipped, these buttons are in the
overhead console. The system can
replace up to three remote control
transmitters used to activate
devices such as garage door
openers, security systems, and
home automation devices.
Read the instructions completely
before attempting to program the
Universal Remote system. Because
of the steps involved, it may be
helpful to have another person
available to assist with programming
the Universal Remote system.
SeeUniversal Remote
System 0126.
Sunroof
If equipped, the sunroof switches
are on the headliner above the
rearview mirror. The ignition must be
in ON/RUN or ACC/ACCESSORY,
or in Retained Accessory Power
(RAP) to operate the sunroof. See
Ignition Positions 0160 and
Retained Accessory Power
(RAP) 0163.
.
Press and hold the front or rear
of the driver side switch to open
or close the sunroof. The
sunshade automatically opens
with the sunroof, but must be
closed manually. .
Press and hold the rear of the
passenger side switch to vent
the sunroof. Press and hold the
front of the switch to close.
. Press and release the front or
rear of the driver side switch to
express-open or express-close
the sunroof.
. The sunroof is equipped with an
automatic reversal system. See
Sunroof 041.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
24 Keys, Doors, and Windows
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . . 26
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . . 26
Remote Vehicle Start . . . . . . . . . . 28
Door Locks . . . . . . . . . . . . . . . . . . . . 30
Power Door Locks . . . . . . . . . . . . . 30
Delayed Locking . . . . . . . . . . . . . . . 31
Automatic Door Locks . . . . . . . . . 31
Lockout Protection . . . . . . . . . . . . . 31
Safety Locks . . . . . . . . . . . . . . . . . . . 31
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 32
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 36
Vehicle Alarm System . . . . . . . . . 36
Immobilizer . . . . . . . . . . . . . . . . . . . . 37
Immobilizer Operation . . . . . . . . . 37
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 38
Power Mirrors . . . . . . . . . . . . . . . . . . 38
Heated Mirrors . . . . . . . . . . . . . . . . . 38
Reverse Tilt Mirrors . . . . . . . . . . . . 39
Interior Mirrors
Interior Rearview Mirrors . . . . . . . 39
Manual Rearview Mirror . . . . . . . . 39
Automatic Dimming Rearview Mirror . . . . . . . . . . . . . . . . . . . . . . . . . 39
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 40
Power Windows . . . . . . . . . . . . . . . 40
Sun Visors . . . . . . . . . . . . . . . . . . . . . 41
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 41
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 Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Keys, Doors, and Windows 27
SeeVehicle Personalization 0120.
If a passenger door is open when
Q
is pressed, all doors lock.
Pressing
Qmay also arm the
theft-deterrent system. See Vehicle
Alarm System 036.
K(Unlock) : Press to unlock the
driver door or all doors. See Vehicle
Personalization 0120. The turn
signal indicators may flash to
indicate unlocking has occurred.
See Vehicle Personalization 0120.
Pressing
Kmay also disarm the
theft-deterrent system. See Vehicle
Alarm System 036.
For vehicles with the manual
liftgate, press
Ktwice within
five seconds to unlock the liftgate.
Y(Remote Liftgate Release) :
If equipped with the power liftgate,
press and hold until the liftgate
begins to move. Press again to stop
the power liftgate.
7(Vehicle Locator/Panic
Alarm) : Press and release one
time to initiate vehicle locator. The
exterior lamps flash and the horn chirps three times. Press and hold
7for at least three seconds to
sound the panic alarm. The horn
sounds and the turn signals flash
until
7is pressed again or the key
is placed in the ignition and turned
to ON/RUN.
/(Remote Vehicle Start) :
If equipped, first press and release
Qthen immediately press and hold/for at least four seconds to start
the engine from outside the vehicle
using the RKE transmitter. See
Remote Vehicle Start 028.
The buttons on the keys are
disabled when there is a key in the
ignition.
Programming Transmitters to
the Vehicle
Only RKE transmitters programmed
to this vehicle will work. If a
transmitter is lost or stolen, a
replacement can be purchased and
programmed through your dealer.
When the replacement transmitter is
programmed to this vehicle, all
remaining transmitters must also be
reprogrammed. Any lost or stolen transmitters will no longer work
once the new transmitter is
programmed. See your dealer to
have new transmitters programmed.
Programming with a Recognized
Transmitter
To program a new key:
1. Insert the original, already programmed key in the ignition
and turn to the key to the ON/
RUN position.
2. Turn the key to LOCK/OFF, and remove the key.
3. Insert the new key to be programmed and turn it to the
ON/RUN position within
five seconds.
The security light will turn off
once the key has been
programmed.
4. Repeat Steps 1–3 if additional keys are to be programmed.
If a key is lost or damaged, see your
dealer to have a new key made.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
28 Keys, Doors, and Windows
Programming without a
Recognized Transmitter
Program a new key to the vehicle
when a recognized key is not
available. Canadian regulations
require that owners see their dealer.
If there are no currently recognized
keys available, follow this procedure
to program the first key.
This procedure will take
approximately 30 minutes to
complete for the first key. The
vehicle must be off and all of the
keys you wish to program must be
with you.1. Insert the new vehicle key into the ignition.
2. Turn to ON/RUN. The security light will come on.
3. Wait 10 minutes until the security light turns off.
4. Turn the ignition to LOCK/OFF.
5. Repeat Steps 2–4 two more times. After the third time, turn
to ON/RUN; the key is learned and all previously known keys
will no longer work with the
vehicle.
Remaining keys can be learned by
following the procedure in
“Programming with a Recognized
Transmitter.”
Battery Replacement
Replace the battery if the REPLACE
BATTERY IN REMOTE KEY
message displays in the DIC. See
Key and Lock Messages 0116.
Caution
When replacing the battery, do
not touch any of the circuitry on
the transmitter. Static from your
body could damage the
transmitter.
The battery is not rechargeable. To
replace the battery: 1. Press the button on the transmitter to extend the key.
2. Remove the battery cover by prying with a finger. 3. Remove the battery by pushing
on the battery and sliding it
toward the key blade.
4. Insert the new battery, positive side facing up. Push the
battery down until it is held in
place. Replace with a CR2032
or equivalent battery.
5. Snap the battery cover back on to the transmitter.
Remote Vehicle Start
The vehicle may have this feature
that allows you to start the engine
from outside the vehicle.
/(Remote Vehicle Start) : This
button will be on the RKE
transmitter if the vehicle has remote
start.
The climate control system will use
the previous settings during a
remote start. The rear defog may
come on during remote start based
on cold ambient conditions. The
rear defog indicator light does not
come on during remote start.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
36 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
This vehicle has an anti-theft alarm
system.
The indicator light, on the
instrument panel near the
windshield, indicates the status of
the system:
Off :Alarm system is disarmed. On Solid :
Vehicle is secured
during the delay to arm the system.
Fast Flash : Vehicle is unsecured.
A door, the hood, or the liftgate
is open.
Slow Flash : Alarm system is
armed.
Arming the Alarm System
1. Turn off the vehicle.
2. Lock the vehicle in one of three ways:
.Use the RKE transmitter.
. With a door open, press the
interior
Q.
3. After 30 seconds the alarm system will arm, and the
indicator light will begin to
slowly flash indicating the
alarm system is operating.
Pressing
Qon the RKE
transmitter a second time will
bypass the 30-second delay
and immediately arm the alarm
system. The vehicle alarm system will not
arm if the doors are locked with
the key.
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.
If a door, the hood, or the liftgate is
opened without first disarming the
system, the turn signals will flash
and the horn will sound for about
30 seconds. The alarm system will
then re-arm to monitor for the next
unauthorized event.
Disarming the Alarm System
To disarm the alarm system or turn
off the alarm if it has been activated:
. Press
Kon the RKE transmitter.
. Start the vehicle.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Keys, Doors, and Windows 37
To avoid setting off the alarm by
accident:
.Lock the vehicle after all
occupants have left the vehicle
and all doors are closed.
. Always unlock a door with the
RKE transmitter.
Unlocking the driver door with the
key will not disarm the system or
turn off the alarm.
How to Detect a Tamper
Condition
IfKis pressed on the RKE
transmitter and the horn chirps and
the lights flash three times, an alarm
occurred previously while the alarm
system was armed.
If the alarm has been activated, a
message will appear on the DIC.
See Security Messages 0118.
Immobilizer
See Radio Frequency
Statement 0301.
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 key is
removed from the ignition.
The system is automatically
disarmed when the vehicle is
started with the correct key. The key
uses a transponder that matches an
immobilizer control unit in the
vehicle and automatically disarms
the system. Only an authorized key
starts the vehicle. The vehicle may
not start if the key is damaged.
The security light in the instrument
cluster comes on if there is a
problem with arming or disarming
the theft-deterrent system. When trying to start the vehicle, the
security light comes 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 engine still does not start, and
the key appears to be undamaged
or the light continues to stay on, try
another ignition key. If the engine
does not start with the other key, the
vehicle needs service. If the vehicle
does start, the first key may be
damaged. See your dealer who can
service the theft-deterrent system
and have a new key made.
Do not leave the key or device that
disarms or deactivates the
theft-deterrent system in the vehicle.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Seats and Restraints 43
Seats and
Restraints
Head Restraints
Head Restraints . . . . . . . . . . . . . . . 44
Front Seats
Seat Adjustment . . . . . . . . . . . . . . . 45
Power Seat Adjustment . . . . . . . . 45
Lumbar Adjustment . . . . . . . . . . . . 46
Reclining Seatbacks . . . . . . . . . . . 47
Memory Seats . . . . . . . . . . . . . . . . . 48
Heated Front Seats . . . . . . . . . . . . 50
Rear Seats
Rear Seats . . . . . . . . . . . . . . . . . . . . 51
Safety Belts
Safety Belts . . . . . . . . . . . . . . . . . . . . 52
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . . 53
Lap-Shoulder Belt . . . . . . . . . . . . . 54
Safety Belt Use During Pregnancy . . . . . . . . . . . . . . . . . . . . 58
Safety Belt Extender . . . . . . . . . . . 58
Safety System Check . . . . . . . . . . 58
Safety Belt Care . . . . . . . . . . . . . . . 58
Replacing Safety Belt System Parts after a Crash . . . . . . . . . . . 59
Airbag System
Airbag System . . . . . . . . . . . . . . . . . 59
Where Are the Airbags? . . . . . . . 61
When Should an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . 62
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . 63
How Does an Airbag Restrain? . . . . . . . . . . . . . . . . . . . . . 63
What Will You See after an Airbag Inflates? . . . . . . . . . . . . . . 64
Passenger Sensing System . . . 65
Servicing the Airbag-Equipped Vehicle . . . . . . . . . . . . . . . . . . . . . . . 69
Adding Equipment to the Airbag-Equipped Vehicle . . . . . 69
Airbag System Check . . . . . . . . . . 70
Replacing Airbag System Parts after a Crash . . . . . . . . . . . . . . . . . 70
Child Restraints
Older Children . . . . . . . . . . . . . . . . . 71
Infants and Young Children . . . . 73
Child Restraint Systems . . . . . . . 75
Where to Put the Restraint . . . . . 77
Lower Anchors and Tethers forChildren (LATCH System) . . . . 78
Replacing LATCH System Parts After a Crash . . . . . . . . . . . . . . . . . 83
Securing Child Restraints (Rear Seat) . . . . . . . . . . . . . . . . . . . 83
Securing Child Restraints (Front Passenger Seat) . . . . . . . . . . . . . 86

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-9234776) - 2016 - crc - 10/12/15
Seats and Restraints 55
3. Push the latch plate into thebuckle until it clicks.
Pull up on the latch plate to
make sure it is secure. If the
belt is not long enough, see
Safety Belt Extender 058.
Position the release button on
the buckle so that the safety
belt could be quickly unbuckled
if necessary.
4. If equipped with a shoulder belt height adjuster, move it to the
height that is right for you. See
“Shoulder Belt Height Adjuster”
later in this section for
instructions on use and
important safety information.
5. To make the lap part tight, pullup on the shoulder belt.
To unlatch the belt, push the button
on the buckle. Always stow the safety belt slowly.
If the safety belt webbing returns
quickly to the stowed position, the
retractor may lock and cannot be
pulled out. If this happens, pull the
safety belt straight out firmly to
unlock the webbing, and then
release it. If the webbing is still
locked in the retractor, see your
dealer.
Before a door is closed, be sure the
safety belt is out of the way. If a
door is slammed against a safety
belt, damage can occur to both the
safety belt and the vehicle.
Shoulder Belt Height Adjuster
The vehicle has a shoulder belt
height adjuster for the driver and
front outboard passenger seating
positions.
Adjust the height so the shoulder
portion of the belt is on the shoulder
and not falling off of it. The belt
should be close to, but not
contacting, the neck. Improper
shoulder belt height adjustment
could reduce the effectiveness of
the safety belt in a crash. See
How
to Wear Safety Belts Properly 053.