GMC Terrain 2020 User manual

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
13556232) - 2020 - CRC - 5/30/19
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . 2
Keys, Doors, and Windows . . . . . . 7
Seats and Restraints . . . . . . . . . . . 33
Storage . . . . . . . . . . . . . . . . . . . . . . . . . 86
Instruments and Controls . . . . . . . 91
Lighting . . . . . . . . . . . . . . . . . . . . . . . 131
Infotainment System . . . . . . . . . . 139
Climate Controls . . . . . . . . . . . . . . 140
Driving and Operating . . . . . . . . . 148
Vehicle Care . . . . . . . . . . . . . . . . . . 214
Service and Maintenance . . . . . 288
Technical Data . . . . . . . . . . . . . . . . 297
Customer Information . . . . . . . . . 301
Index .................... 304

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
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2 Introduction
Introduction
The names, logos, emblems,
slogans, vehicle model names, and
vehicle body designs appearing in
this manual including, but not limited
to, GM, the GM logo, GMC, the
GMC Truck Emblem, TERRAIN, and
DENALI are trademarks and/or
service marks of General Motors
LLC, its subsidiaries, affiliates,
or licensors.
This manual describes features that
may or may not be on the vehicle
because of optional equipment that
was not purchased on the vehicle,
model variants, country
specifications, features/applications
that may not be available in your
region, or changes subsequent to
the printing of this owner’s manual.
Refer to the purchase
documentation relating to your
specific vehicle to confirm the
features.
Keep this manual in the vehicle for
quick reference.
Danger, Warning, and
Caution
Warning messages found on vehicle
labels and in this manual describe
hazards and what to do to avoid or
reduce them.
{Danger
Danger indicates a hazard with a
high level of risk which will result
in serious injury or death.
{Warning
Warning indicates a hazard that
could result in injury or death.
Caution
Caution indicates a hazard that
could result in property or vehicle
damage.
A circle with a slash through it is a
safety symbol which means “Do
Not,” “Do not do this,”or “Do not let
this happen.”
Litho in U.S.A.
Part No. 84651807 ©2019 General Motors LLC. All Rights Reserved.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
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Introduction 3
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message,
gauge, or indicator.
M:Shown when the owner’s
manual has additional instructions
or information.
*:Shown when the service
manual has additional instructions
or information.
0:Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional symbols
that may be found on the vehicle
and what they mean. See the
features in this manual for
information.
u:Air Conditioning System
G:Air Conditioning Refrigerant Oil
9:Airbag Readiness Light
!:Antilock Brake System (ABS)
$:Brake System Warning Light
9:Dispose of Used Components
Properly
P:Do Not Apply High Pressure
Water
B:Engine Coolant Temperature
_:Flame/Fire Prohibited
H:Flammable
[:Forward Collision Alert
R:Fuse Block Cover Lock
Location
+:Fuses
j:ISOFIX/LATCH System Child
Restraints
Q:Keep Fuse Block Covers
Properly Installed
|:Lane Change Alert
@:Lane Departure Warning
A:Lane Keep Assist
*:Malfunction Indicator Lamp
::Oil Pressure
X:Park Assist
~:Pedestrian Ahead Indicator
O:Power
7:Rear Cross Traffic Alert
I:Registered Technician
/:Remote Vehicle Start
>:Seat Belt Reminders
I:Side Blind Zone Alert
h:Stop/Start
7:Tire Pressure Monitor
d:Traction Control/StabiliTrak/
Electronic Stability Control (ESC)
a:Under Pressure
V:Vehicle Ahead Indicator

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
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4 Introduction
Instrument Panel Overview

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Introduction 5
1. Air Vents 0145.
2. Turn Signal Lever. See Turn
and Lane-Change Signals
0135.
IntelliBeam System Button (If
Equipped). See Exterior Lamp
Controls 0131.
3. Instrument Cluster 0100.
Driver Information Center (DIC)
Display. See Driver Information
Center (DIC) 0116.
4. Windshield Wiper/Washer 092.
5. Infotainment 0139.
6. Light Sensor. See Automatic
Headlamp System 0134.
7. Hazard Warning Flashers
0134.
8. Climate Control Systems 0140
(If Equipped).
Dual Automatic Climate Control
System 0142 (If Equipped).
9. Shift Switches. See Automatic
Transmission 0173.
10. Power Outlets 095.
11. Assistance Systems for
Parking or Backing 0192 (If
Equipped).
12. Heated and Ventilated Front
Seats 041 (If Equipped).
13. Wireless Charging 096 (If
Equipped).
14. Driver Mode Control 0185 (If
Equipped).
15. Lane Keep Assist (LKA) 0206
(If Equipped).
Hill Descent Control (HDC)
0184 (If Equipped).
16. USB Port. See the infotainment
manual.
Auxiliary Jack. See the
infotainment manual.
17. ENGINE START/STOP Button.
See Ignition Positions 0164.
18. Steering Wheel Controls. See
the infotainment manual.
19. Horn 092.
20. Steering Wheel Adjustment
092 (Out of View).
21. Hood Release. See Hood
0216.
22. Cruise Control 0188.
Heated Steering Wheel 092 (If
Equipped).
Forward Collision Alert (FCA)
System 0198 (If Equipped).
23. Data Link Connector (DLC)
(Out of View). See Malfunction
Indicator Lamp (Check Engine
Light) 0108.
24. Electric Parking Brake 0179.
25. Exterior Lamp Controls 0131.
Instrument Panel Illumination
Control 0136.
Fog Lamps 0135 (If
Equipped).

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6 Introduction
2NOTES

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Keys, Doors, and Windows 7
Keys, Doors, and
Windows
Keys and Locks
Keys ............................ 7
Remote Keyless Entry (RKE)
System . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Keyless Entry (RKE)
System Operation . . . . . . . . . . . . . 8
Remote Vehicle Start . . . . . . . . . . 13
Door Locks . . . . . . . . . . . . . . . . . . . . 14
Power Door Locks . . . . . . . . . . . . . 17
Delayed Locking . . . . . . . . . . . . . . . 17
Automatic Door Locks . . . . . . . . . 17
Lockout Protection . . . . . . . . . . . . . 17
Safety Locks . . . . . . . . . . . . . . . . . . . 18
Doors
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . 19
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . . . 24
Vehicle Alarm System . . . . . . . . . 24
Immobilizer Operation . . . . . . . . . 25
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . . . 27
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
Windows
Windows . . . . . . . . . . . . . . . . . . . . . . . 29
Power Windows . . . . . . . . . . . . . . . 29
Sun Visors . . . . . . . . . . . . . . . . . . . . . 31
Roof
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . 31
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.

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8 Keys, Doors, and Windows
The key, inside the Remote Keyless
Entry (RKE) transmitter, is used for
the driver door.
To remove the key, press the button
near the bottom of the transmitter,
and pull the key out. Never pull the
key out without pressing the button.
If it becomes difficult to turn the key,
inspect the key blade for debris.
See your dealer if a new key is
needed.
Remote Keyless Entry
(RKE) System
If there is a decrease in the Remote
Keyless Entry (RKE) operating
range:
.Check the distance. The
transmitter may be too far from
the vehicle.
.Check the location. Other
vehicles or objects may be
blocking the signal.
.Check the transmitter's battery.
See “Battery Replacement”later
in this section.
.If the transmitter is still not
working correctly, see your
dealer or a qualified technician
for service.
Remote Keyless Entry
(RKE) System Operation
The Keyless Access system allows
for vehicle entry when the Remote
Keyless Entry (RKE) transmitter is
within 1 m (3 ft). See “Keyless
Access Operation”following.
The RKE transmitter functions may
work up to 60 m (197 ft) away from
the vehicle.
Other conditions can impact the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System 08.

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Keys, Doors, and Windows 9
With Remote Start Shown, Without
Similar
Q:Press to lock all doors and the
fuel door. The turn signal indicators
may flash and/or the horn may
sound on the second press to
indicate locking. See Vehicle
Personalization 0123.
If the driver door is open when Qis
pressed and Open Door
Anti-Lockout is enabled, all doors
will lock and then the driver door will
immediately unlock. See Vehicle
Personalization 0123. If the
passenger door is open when Qis
pressed, all doors lock.
Pressing Qmay also arm the
theft-deterrent system. See Vehicle
Alarm System 024.
K:Press to unlock the driver door
and the fuel door. Press unlock
again within five seconds to unlock
all doors. The RKE transmitter can
be programmed to unlock all doors
on the first button press. See
Vehicle Personalization 0123.
When remotely unlocking the
vehicle at night the fog lamps and
back-up lamps will come on for
about 20 seconds to light your
approach to the vehicle. The turn
signal indicators may flash to
indicate unlocking. See Vehicle
Personalization 0123.
Pressing Kwill disarm the
theft-deterrent system. See Vehicle
Alarm System 024.
If equipped, press and hold Kto
remotely open all of the windows,
if enabled. See Vehicle
Personalization 0123.
/:If equipped, press and release
Qand then 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 013.
7:Press and release one time to
initiate vehicle locator. The exterior
lamps flash and the horn chirps
three times. Press and hold 7for
three seconds to sound the panic
alarm. The horn sounds and the
turn signal lamps flash for
30 seconds, or until 7is pressed
again or the vehicle is started.
b:Press twice quickly to open or
close the liftgate.
Press once to stop the liftgate from
moving.

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10 Keys, Doors, and Windows
Keyless Access Operation
With the Keyless Access system,
you can lock and unlock the doors
and access the liftgate without
removing the RKE transmitter from
your pocket, purse, briefcase, etc.
The RKE transmitter should be
within 1 m (3 ft) of the liftgate or door
being opened.
Keyless Access can be
programmed to unlock all doors on
the first lock/unlock press from the
driver door. See Vehicle
Personalization 0123.
If equipped with memory seats, RKE
transmitters 1 and 2 are linked to
the seating positions of memory 1 or
2. See Memory Seats 038.
Keyless Unlocking/Locking from
the Driver Door
When the doors are locked and the
RKE transmitter is within 1 m (3 ft) of
the driver door handle, pressing the
lock/unlock button on the driver door
handle will unlock the driver door.
If the lock/unlock button is pressed
again within five seconds, all
passenger doors will unlock.
Driver Shown, Passenger Similar
Pressing the lock/unlock button will
cause all doors to lock if any of the
following occur:
.It has been more than
five seconds since the first lock/
unlock button press.
.Two lock/unlock button presses
were used to unlock all doors.
.Any vehicle door has opened
and all doors are now closed.
Keyless Unlocking/Locking from
Passenger Doors
When the doors are locked and the
RKE transmitter is within 1 m (3 ft) of
the door handle, pressing the lock/
unlock button on that door handle
will unlock all doors. Pressing the
lock/unlock button will cause all
doors to lock if any of the following
occur:
.The lock/unlock button was used
to unlock all doors.
.Any vehicle door has opened
and all doors are now closed.
Passive Locking
If equipped with Keyless Access,
this vehicle will lock several
seconds after all doors are closed if
the vehicle is off and at least one
RKE transmitter has been removed
or none remain in the interior.
The fuel door will also lock.
If other electronic devices interfere
with the RKE transmitter signal, the
vehicle may not detect the RKE
transmitter inside the vehicle.
If passive locking is enabled, the

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Keys, Doors, and Windows 11
doors may lock with the RKE
transmitter inside the vehicle. Do
not leave the RKE transmitter in an
unattended vehicle.
To customize the doors to
automatically lock when exiting the
vehicle, see “Remote Lock, Unlock,
Start”under Vehicle Personalization
0123.
Temporary Disable of Passive
Locking
Temporarily disable passive locking
by pressing and holding Kon the
interior door switch with a door open
for at least four seconds, or until
three chimes are heard. Passive
locking will then remain disabled
until Qon the interior door is
pressed, or until the vehicle is
turned on.
Remote Left in Vehicle Alert
When the vehicle is turned off and
an RKE transmitter is left in the
vehicle, the horn will chirp three
times after all doors are closed. To
turn on or off, see Vehicle
Personalization 0123.
Remote No Longer in Vehicle Alert
If the vehicle is on with a door open,
and then all doors are closed, the
vehicle will check for RKE
transmitters inside. If an RKE
transmitter is not detected, the
Driver Information Center (DIC) will
display NO REMOTE DETECTED
and the horn will chirp three times.
This occurs only once each time the
vehicle is driven.
Keyless Liftgate Opening
Press the touch pad on the liftgate
handle to open the liftgate if the
RKE transmitter is within 1 m (3 ft).
Key Access
To access a vehicle with a dead
transmitter battery, see Door Locks
014.
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. Each vehicle can
have up to eight transmitters
programmed to it. See your dealer
to have new transmitters
programmed.
Starting the Vehicle with a Low
Transmitter Battery
When the vehicle is started, if the
transmitter battery is weak, the DIC
may display NO REMOTE
DETECTED or NO REMOTE KEY
WAS DETECTED PLACE KEY IN
TRANSMITTER POCKET THEN
START YOUR VEHICLE. The DIC
may also display REPLACE
BATTERY IN REMOTE KEY.
To start the vehicle:

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12 Keys, Doors, and Windows
1. Place the transmitter in the
cupholder.
2. With the vehicle in P (Park) or
N (Neutral), press the brake
pedal and ENGINE
START/STOP.
Replace the transmitter battery
as soon as possible.
Battery Replacement
Replace the battery in the
transmitter soon if the DIC displays
REPLACE BATTERY IN
REMOTE KEY.
Caution
When replacing the battery, do
not touch any of the circuitry on
the transmitter. Static from your
body could damage the
transmitter.
To replace the battery:
1. Press the button on the side of
the RKE transmitter to remove
the key. Never pull the key out
without pressing the button.
2. Insert a flat, thin object in the
center of the transmitter to
separate and remove the back
cover.
3. Lift the battery with a flat
object.
4. Remove the battery.
5. Insert the new battery, positive
side toward the back cover.
Replace with a CR2032 or
equivalent battery.
6. Push together the transmitter.
7. Reinsert the key.

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Keys, Doors, and Windows 13
Remote Vehicle Start
If equipped, this feature allows you
to start the engine from outside the
vehicle.
/: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.
If equipped with heated and
ventilated front seats, they may
come on during a remote start. See
Heated and Ventilated Front Seats
041.
If equipped with a heated steering
wheel, it may come on during a
remote start. See Heated Steering
Wheel 092.
Laws in some local communities
may restrict the use of remote
starters. For example, some laws
require a person using remote start
to have the vehicle in view. Check
local regulations for any
requirements.
Do not use the remote start feature
if the vehicle is low on fuel. The
vehicle could run out of fuel.
Other conditions can affect the
performance of the transmitter. See
Remote Keyless Entry (RKE)
System 08.
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.
The parking lamps will turn on
and remain on as long as the
engine is running. The
vehicle's doors will be locked.
3. Turn the ignition on before
driving.
The engine will shut off after
15 minutes unless a time
extension is done or the
ignition is turned on.
Extending Engine Run Time
For a 15-minute extension, after
30 seconds repeat Steps 1 and 2
while the engine is still running. The
remote start can be extended once.
When the remote start is extended,
the second 15 minutes will be
added.
For example, if the engine has been
running for 15 minutes, and
15 minutes are added, the engine
will run for a total of 30 minutes.
A maximum of two remote starts or
a start with an extension are
allowed between ignition cycles.
The ignition must be turned on and
then back off to use remote start
again.
Canceling a Remote Start
To shut off the engine:

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14 Keys, Doors, and Windows
.Press and hold /until the
parking lamps turn off.
.Turn on the hazard warning
flashers.
.Turn the ignition on and then off.
Conditions in Which Remote Start
Will Not Work
The remote vehicle start feature will
not operate if:
.A transmitter is in the vehicle.
.The vehicle is on.
.The hood is not closed.
.The hazard warning flashers
are on.
.There is an emission control
system malfunction.
.The engine coolant temperature
is too high.
.The oil pressure is low.
.Two remote vehicle starts or a
start with an extension have
already been used.
.The vehicle is not in P (Park).
Remote Start Ready
If the vehicle does not have the
remote vehicle start feature, it may
have the remote start ready feature.
This feature allows your dealer to
add the manufacturer's remote
vehicle start feature. See your
dealer to add the manufacturer's
remote vehicle start feature to the
vehicle.
Door Locks
{Warning
Unlocked doors can be
dangerous.
.Passengers, especially
children, can easily open
the doors and fall out of a
moving vehicle. The doors
can be unlocked and
opened while the vehicle is
moving. The chance of
being thrown out of the
vehicle in a crash is
increased if the doors are
(Continued)
Warning (Continued)
not locked. So, all
passengers should wear
seat belts properly and the
doors should be locked
whenever the vehicle is
driven.
.Young children who get into
unlocked vehicles may be
unable to get out. A child
can be overcome by
extreme heat and can suffer
permanent injuries or even
death from heat stroke.
Always lock the vehicle
whenever leaving it.
.Outsiders can easily enter
through an unlocked door
when you slow down or stop
the vehicle. Locking the
doors can help prevent this
from happening.
To lock or unlock the door from
outside the vehicle:

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Keys, Doors, and Windows 15
.Press Qor Kon the Remote
Keyless Entry (RKE) transmitter.
See Remote Keyless Entry
(RKE) System Operation 08.
.Use the key in the driver door.
The key cylinder is covered with
a cap.
To lock or unlock the door from
inside the vehicle:
.Press Qor Kon the power door
lock switch.
.Pull the door handle once to
unlock the door. Pull the handle
again to unlatch it.
Keyless Access
If equipped, the RKE transmitter
must be within 1 m (3 ft) of the
liftgate or door being opened. Press
the button on the door handle to
open. See “Keyless Access
Operation”in Remote Keyless Entry
(RKE) System Operation 08.
Driver Door Key Lock Cylinder
Access (In Case of Dead
Battery)
To access the driver door key lock
cylinder:
1. Pull the door handle (1) to the
open position and hold it open
until cap removal is complete.
2. Insert the key into the slot (3)
on the bottom of the cap (2)
and lift the key upward.
3. Move the cap (2) rearward and
remove.
4. Use the key in the cylinder.

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16 Keys, Doors, and Windows
To replace the cap:
1. Pull the door handle (1) to the
open position and hold it open
until cap installation is
complete.
2. Insert the two tabs (6) at the
back of the cap between the
seal (5) and the metal base (4).
3. Slide the cap forward and
press the forward edge to
install the cap in place.
4. Release the door handle.
5. Check that the cap is secure.
Free-Turning Locks
The door key lock cylinder turns
freely when either the wrong key is
used, or the correct key is not fully
inserted. The free-turning door lock
feature prevents the lock from being
forced open. To reset the lock, turn
it to the vertical position with the
correct key fully inserted. Remove
the key and insert it again. If this
does not reset the lock, turn the key
halfway around in the cylinder and
repeat the reset procedure.

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Keys, Doors, and Windows 17
Power Door Locks
Q:Press to lock the doors.
K:Press to unlock the doors.
The fuel door is also locked or
unlocked using these features.
Delayed Locking
This feature delays the actual
locking of the doors until
five seconds after all doors are
closed.
Delayed locking can only be turned
on when the Open Door
Anti-Lockout feature has been
turned off.
When Qis pressed on the power
door lock switch with the door open,
a chime will sound three times
indicating that delayed locking is
active.
The doors will then lock
automatically five seconds after all
doors are closed. If a door is
reopened before five seconds have
elapsed, the five-second timer will
reset once all the doors are closed
again.
Press Qon the door lock switch
again, or press Qon the RKE
transmitter, to override this feature
and lock the doors immediately.
Delayed locking can be
programmed. See Vehicle
Personalization 0123.
Automatic Door Locks
The vehicle is programmed so that
the doors will lock automatically
when all doors are closed, the
ignition is on, and the vehicle is
shifted out of P (Park).
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:
.Press Kon the power door lock
switch.
.Shift into P (Park).
Automatic door locking can be
programmed. See Vehicle
Personalization 0123.
Lockout Protection
If the ignition is on or in ACC/
ACCESSORY and the power door
lock switch is pressed with the

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18 Keys, Doors, and Windows
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-Lockout
If Open Door Anti-Lockout is turned
on and the vehicle is off, the driver
door is open, and locking is
requested, all the doors will lock and
only the driver door will unlock. The
Open Door Anti-Lockout feature can
be turned on or off. See Vehicle
Personalization 0123.
Safety Locks
The rear door safety locks prevent
passengers from opening the rear
doors from inside the vehicle.
Manual Safety Locks
If equipped, the safety lock is on the
inside edge of the rear doors. To
use the safety lock:
1. Move the lever down to the
lock position.
2. Close the door.
3. Do the same for the other
rear door.
To open a rear door when the safety
lock is on:
1. Unlock the door by activating
the inside handle, by pressing
the power door lock switch,
or by using the Remote
Keyless Entry (RKE)
transmitter.
2. Open the door from the
outside.
When the safety lock is enabled,
adults and older children will not be
able to open the rear door from the
inside. Cancel the safety locks to
enable the doors to open from the
inside.
To cancel the safety lock:
1. Unlock the door and open it
from the outside.
2. Move the lever up to unlock.
Do the same for the other door.

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
13556232) - 2020 - CRC - 5/13/19
Keys, Doors, and Windows 19
Doors
Liftgate
{Warning
Exhaust gases can enter the
vehicle if it is driven with the
liftgate or trunk/hatch open,
or with any objects that pass
through the seal between the
body and the trunk/hatch or
liftgate. Engine exhaust contains
carbon monoxide (CO) which
cannot be seen or smelled. It can
cause unconsciousness and even
death.
If the vehicle must be driven with
the liftgate or trunk/hatch open:
.Close all of the windows.
.Fully open the air outlets on
or under the instrument
panel.
(Continued)
Warning (Continued)
.Adjust the climate control
system to a setting that
brings in only outside air
and set the fan speed to the
highest setting. See
“Climate Control Systems”
in the Index.
.If the vehicle is equipped
with a power liftgate, disable
the power liftgate function.
See Engine Exhaust 0172.
Caution
To avoid damage to the liftgate or
liftgate glass, make sure the area
above and behind the liftgate is
clear before opening it.
Manual Liftgate
To unlock the liftgate, press Kon
the power door lock switch or press
Kon the Remote Keyless Entry
(RKE) transmitter twice within
five seconds. See Remote Keyless
Entry (RKE) System Operation 08.
To open the liftgate, press the touch
pad on the bottom of the liftgate and
lift up.
Use the pull cup to lower and close
the liftgate. Do not press the touch
pad while closing the liftgate. This
may cause the liftgate to be
unlatched.
If equipped with Keyless Access,
the liftgate can be opened when
locked if the RKE transmitter is

GMC Terrain/Terrain Denali Owner Manual (GMNA-Localizing-MidEast-
13556232) - 2020 - CRC - 5/13/19
20 Keys, Doors, and Windows
within 1 m (3 ft) of the liftgate. See
Remote Keyless Entry (RKE)
System Operation 08.
The liftgate has an electric latch.
If the battery is disconnected or has
low voltage, the liftgate will not
open. The liftgate will resume
operation when the battery is
reconnected and charged.
Always close the liftgate before
driving.
Power Liftgate Operation
{Warning
You or others could be injured if
caught in the path of the power
liftgate. Make sure there is no one
in the way of the liftgate as it is
opening and closing.
Caution
Driving with an open and
unsecured liftgate may result in
damage to the power liftgate
components.
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.
.Press btwice quickly on the
RKE transmitter until the liftgate
moves.
.Press 8on the driver door.
The driver door must be
unlocked.
.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 liftgate.