2021 CADILLAC XT6 service

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Keys, Doors, and Windows . . . . . . . . . . 6
Seats and Restraints . . . . . . . . . . . . . . . 39
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Instruments and Controls . . . . . . . . 100
Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Infotainment System . . . . . . . . . . . . . 146
Climate Controls . . . . . . . . . . . . . . . . . . 208
Driving and Operating . . . . . . . . . . . . 217
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 303
Service and Maintenance . . . . . . . . . 379
Technical Data . . . . . . . . . . . . . . . . . . . . 393
Customer Information . . . . . . . . . . . . 397
Reporting Safety Defects . . . . . . . . . 407
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 410
Connected Services . . . . . . . . . . . . . . . 415
Index . . . . . . . . . . . . . . . . . . . . . . . . 418
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, CADILLAC, the CADILLAC
Emblem, and XT6are trademarks and/
or service marks of General Motors
LLC, its subsidiaries, affiliates,
or licensors.
For vehicles first sold in Canada,
substitute the name “General Motors
of Canada Company ”for Cadillac
Motor Car Division wherever it
appears in this manual.
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.
Canadian Vehicle Owners
A French language manual can be
obtained from your dealer, at
www.helminc.com, or from:
Propriétaires Canadiens
On peut obtenir un exemplaire de ce
guide en français auprès du
concessionnaire ou à l'adresse
suivante:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
USA
Litho in U.S.A.
Part No. 84581320 C Third Printing©2021 General Motors LLC. All Rights Reserved.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
2 INTRODUCTION
Using this Manual
To quickly locate information about
the vehicle, use the Index in the back
of the manual. It is an alphabetical
list of what is in the manual and the
page number where it can be found.
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.”
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

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
KEYS, DOORS, AND WINDOWS 7
The key, inside the Remote Keyless
Entry (RKE) transmitter, can be used
for all locks.
To remove the key, press the button
on the side of the transmitter, near
the bottom, 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.
Periodically, clean with a brush or
a pick.
See your dealer if a new key is needed.
Contact Roadside Service if locked out
of the vehicle. SeeRoadside Service
0 401.
With an active OnStar or connected
service plan, an OnStar Advisor may
remotely unlock the vehicle. See
OnStar Overview 0410.
Remote Keyless Entry
(RKE) System
See Radio Frequency Statement 0406.
If there is a decrease in the key
operating range:
.Check the distance. The key may be
too far from the vehicle.
.Check the location. Other vehicles
or objects may be blocking the
signal.
.Check the key battery. See “Battery
Replacement ”later in this section.
.If the key 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
0 7.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
22 KEYS, DOORS, AND WINDOWS
A repetitive chime will sound while
the falling liftgate detection feature is
operating. Remove any excess weight.
If the liftgate continues to
automatically close after opening, see
your dealer for service before using
the power liftgate.
Interfering with the power liftgate
motion or manually closing the
liftgate too quickly after power
opening may resemble a support strut
failure. This could also activate the
falling liftgate detection feature. Allow
the liftgate to complete its operation
and wait a few seconds before
manually closing the liftgate.
Obstacle Detection Features
If the liftgate encounters an obstacle
during a power open or close cycle,
the liftgate will automatically reverse
direction and move a short distance
away from the obstacle. After
removing the obstruction, the power
liftgate operation can be used again.
If the liftgate encounters multiple
obstacles on the same power cycle,
the power function will deactivate.
After removing the obstructions,manually close the liftgate. This will
allow normal power operation
functions to resume.
If the vehicle is locked while the
liftgate is closing, and an obstacle is
encountered that prevents the liftgate
from completely closing, the horn will
sound as an alert that the liftgate did
not close.
Setting the 3/4 Mode
To change the position the liftgate
stops at when opening:
1. Select MAX or 3/4 mode and power open the liftgate.
2. Stop the liftgate movement at the desired height by pressing any
liftgate button. Manually adjust the
liftgate position if needed.
3. Press and hold
lon the outside
of the liftgate until the turn signals
flash and a beep sounds. This
indicates the setting has been
recorded. The liftgate cannot be set below a
minimum programmable height.
If there is no light flash or sound,
then the height adjustment may be
too low.
Manual Operation
Select OFF to manually operate the
liftgate.
Caution
Attempting to move the liftgate too
quickly and with excessive force
may result in damage to the
vehicle.
Operate the liftgate manually with a
smooth motion and moderate speed.
The system includes a feature which
limits the manual closing speed to
protect the components.
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 07.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
KEYS, DOORS, AND WINDOWS 29
The Driver Information Center (DIC)
may display one of these messages:
.A message to service the steering
column lock indicates that an issue
has been detected with the column
lock feature and the vehicle should
be serviced.
.A message that the steering column
is locked indicates that the engine
is running, but the steering column
is still locked. It is normal for the
column to be locked during a
remote start, but the column should
unlock after the brake pedal is
pressed and the vehicle is started.
No message will display during a
remote start.
.A message that the steering wheel
must be turned and the vehicle
must be started again indicates that
the column lock mechanism is
bound, the column locking device
was unable to unlock the steering
column, and the vehicle did not
start. If this happens, immediately
turn the steering wheel from side to
side to unbind the column lock.
If this does not unlock the steering
column, turn the vehicle off and
open the driver door to reset thesystem. Then turn the vehicle on
and immediately turn the steering
wheel side to side for about
15 seconds. In some cases, it may
take significant force to unbind the
column.
To keep the steering column from
binding, straighten the front wheels
before turning off the vehicle.
Immobilizer
See Radio Frequency Statement 0406.
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

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
30 KEYS, DOORS, AND WINDOWS
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
Operation07.
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 ”under
Remote 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 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.
Power Mirrors
To adjust each mirror: 1. Press
jor|to select the driver
or passenger side mirror. The
indicator light will illuminate.
2. Press the arrows on the control pad to move the mirror in the desired
direction.
3. Adjust each outside mirror so that a little of the vehicle and the area
behind it can be seen.
4. Press
jor|again to deselect the
mirror.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
34 KEYS, DOORS, AND WINDOWS
{Warning
The Rear Camera Mirror (RCM) has
a limited view. Portions of the road,
vehicles, and other objects may not
be seen. Do not drive or park the
vehicle using only this camera.
Objects may appear closer than
they are. Check the outside mirrors
or glance over your shoulder when
making lane changes or merging.
Failure to use proper care may
result in injury, death, or vehicle
damage.
Troubleshooting
See your dealer for service if a blue
screen and
3are displayed in the
mirror, and the display shuts off. Also,
push the tab as indicated to return to
the automatic dimming mode.
The Rear Camera Mirror may not work
properly or display a clear image if:
.There is glare from the sun or
headlamps. This may obstruct
objects from view.
.Dirt, snow, or other debris blocks
the camera lens. Clean the lens with
a soft damp cloth, or if equipped,
with the Rear Camera Washer. See
Rear Window Wiper/Washer 0104.
.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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
58 SEATS AND RESTRAINTS
Before a door is closed, be sure the
seat belt is out of the way. If a door is
slammed against a seat belt, damage
can occur to both the seat 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 that 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 seat belt in a
crash. SeeHow to Wear Seat Belts
Properly 054.
Press and hold the release button
while raising or lowering the height
adjuster to the desired position.
After the height adjuster is set to the
desired position, try to move it down
without pressing the release button to
make sure it has locked into position.
Automatic Seat Belt Tightening
System
The vehicle may have the Automatic
Seat Belt Tightening System.
Each time the front seat belts are
buckled while the vehicle is in P (Park)
or D (Drive) and the engine is running or in Auto Stop (if equipped), the
system may activate to tighten the
seat belts.
The system also activates during
emergency braking and/or sudden
driving maneuvers and releases when
driving conditions return to normal.
The system will not activate if the
Traction Control/Electronic Stability
Control system is not functioning
properly. See
Traction Control/
Electronic Stability Control 0248.
If there is a problem with the
Automatic Seat Belt Tightening
System, a message displays on the
Driver Information Center (DIC). If a
system unavailable message displays
repeatedly or if a service message
displays, see your dealer. Other seat
belt functions are not affected by the
Automatic Seat Belt Tightening
System.Seat Belt Pretensioners
This vehicle has seat belt
pretensioners for the front outboard
occupants. Although the seat belt
pretensioners cannot be seen, they are
part of the seat belt assembly. They