2021 CADILLAC XT6 Engine

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
20 KEYS, DOORS, AND WINDOWS
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.
.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.
(Continued)
Warning (Continued)
.If the vehicle is equipped with a
power liftgate, disable the power
liftgate function.
See Engine Exhaust 0239.
Caution
To avoid damage to the liftgate or
liftgate glass, make sure the area
above and behind the liftgate is
clear before opening it.
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).

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
36 KEYS, DOORS, AND WINDOWS
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 RKE
transmitter. See Vehicle Personalization
0 130.
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. See Ignition
Positions 0232 and
Retained Accessory Power (RAP) 0237.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
46 SEATS AND RESTRAINTS
Heated and Ventilated Seat ButtonsShown, Heated Seat Buttons Similar
If equipped, the buttons are near the
climate controls on the center stack.
To operate, the engine must be
running.
Press
MorLto heat the driver or
passenger seatback and cushion.
Press
Cor{, if equipped, to ventilate
the driver or passenger seat.
A ventilated seat has a fan that pulls
or pushes air through the seat. The air
is not cooled. When this feature is off, the heated
and ventilated seat symbols on the
buttons are white. When a heated seat
is turned on, the symbol turns red.
When a ventilated seat is turned on,
the symbol turns blue.
Press the button once for the highest
setting. With each press of the button,
the seat will change to the next lower
setting, and then to the off setting.
The indicator lights next to the
buttons indicate three for the highest
setting and one for the lowest. If the
heated seats are on high, the level
may automatically be lowered after
approximately 30 minutes.
The passenger seat may take longer to
heat up.
Auto Heated and Ventilated Seats
When the vehicle is on, this feature
will automatically activate the heated
or ventilated seats at the level
required by the vehicle’s interior
temperature.
The active high, medium, low, or off
heated or ventilated seat level will be
indicated by the manual heated or
ventilated seat buttons on the centerstack. Use the manual heated or
ventilated seat buttons on the center
stack to turn auto heated or ventilated
seats off. If the passenger seat is
unoccupied, the auto heated or
ventilated seats feature will not
activate that seat. The auto heated or
ventilated seats feature can be
programmed to always be enabled
when the vehicle is on.
See
Vehicle Personalization 0130.
Remote Start Heated and Ventilated
Seats
During a remote start, the heated or
ventilated seats, if equipped, can be
turned on automatically. When it is
cold outside, the heated seats turn on,
and when it is hot outside the
ventilated seats turn on. If the auto
heated or ventilated seats feature,
if equipped, is not turned on, the
heated or ventilated seats will be
canceled when the ignition is turned
on. Press the heated or ventilated seat
button to use the heated or ventilated
seats after the vehicle is started.
The heated or ventilated seat
indicator lights do not turn on during
a remote start.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
50 SEATS AND RESTRAINTS
Heated Rear Seats
{Warning
If temperature change or pain to
the skin cannot be felt, the seat
heater may cause burns. See the
Warning underHeated and
Ventilated Front Seats 045.
If available, the buttons are on the
rear of the center console.
With the engine running, press
Mor
Lto heat the left or right outboard
seat cushion. An indicator on the
climate control display appears when
this feature is on. This feature turns on at the highest
setting. With each press of the button,
the heated seat changes to the next
lower setting, and then the off setting.
Three lights indicate the highest
setting, and one light indicates the
lowest. If the heated seats are on high,
the level may automatically be
lowered after approximately
30 minutes.
Third Row Seats
{Warning
Using the third row seating position
while the second row is folded,
or pushed forward in the entry
position, could cause injury in a
sudden stop or crash. Be sure to
return the seat to the passenger
seating position. Push and pull on
the seat to make sure it is locked
into place.
Caution
Folding a rear seat with the seat
belts still fastened may cause
damage to the seat or the seat
belts. Always unbuckle the seat
belts and return them to their
normal stowed position before
folding a rear seat.
Folding the Seatback
1. Remove objects on the floor in
front of or on the second row seat,
or in the seat tracks on the floor.
2. If the second row seat is in the full rear position, adjust it forward to
allow the third row seat to fold
fully flat.

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

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
66 SEATS AND RESTRAINTS
{Warning
When an airbag inflates, there may
be dust in the air. This dust could
cause breathing problems for
people with a history of asthma or
other breathing trouble. To avoid
this, everyone in the vehicle should
get out as soon as it is safe to do
so. If you have breathing problems
but cannot get out of the vehicle
after an airbag inflates, then get
fresh air by opening a window or a
door. If you experience breathing
problems following an airbag
deployment, you should seek
medical attention.
The vehicle has a feature that may
automatically unlock the doors, turn
on the interior lamps and hazard
warning flashers, and shut off the fuel
system after the airbags inflate. The
feature may also activate, without
airbag inflation, after an event that
exceeds a predetermined threshold.
After turning the ignition off and then
on again, the fuel system will return
to normal operation; the doors can be locked, the interior lamps can be
turned off, and the hazard warning
flashers can be turned off using the
controls for those features. If any of
these systems are damaged in the
crash they may not operate as normal.
{Warning
A crash severe enough to inflate the
airbags may have also damaged
important functions in the vehicle,
such as the fuel system, brake and
steering systems, etc. Even if the
vehicle appears to be drivable after
a moderate crash, there may be
concealed damage that could make
it difficult to safely operate the
vehicle.
Use caution if you should attempt
to restart the engine after a crash
has occurred.
In many crashes severe enough to
inflate the airbag, windshields are
broken by vehicle deformation.
Additional windshield breakage may
also occur from the front outboard
passenger airbag.
.Airbags are designed to inflate only
once. After an airbag inflates, you
will need some new parts for the
airbag system. If you do not get
them, the airbag system will not be
there to help protect you in another
crash. A new system will include
airbag modules and possibly other
parts. The service manual for the
vehicle covers the need to replace
other parts.
.The vehicle has a crash sensing and
diagnostic module which records
information after a crash. See
Vehicle Data Recording and Privacy
0 408 and
Event Data Recorders 0408.
.Let only qualified technicians work
on the airbag system. Improper
service can mean that an airbag
system will not work properly. See
your dealer for service.
Passenger Sensing System
The vehicle has a passenger sensing
system for the front outboard
passenger position. The passenger
airbag status indicator will light on
the overhead console when the vehicle
is started.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
100 INSTRUMENTS AND CONTROLS
Instruments and
Controls
Controls
Steering Wheel Adjustment . . . . . 101
Steering Wheel Controls . . . . . . . . . 101
Heated Steering Wheel . . . . . . . . . . 101
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Windshield Wiper/Washer . . . . . . . 102
Rear Window Wiper/Washer . . . . 104
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Power Outlets . . . . . . . . . . . . . . . . . . . . . 105
Wireless Charging . . . . . . . . . . . . . . . . 106
Warning Lights, Gauges, and
Indicators
Warning Lights, Gauges, andIndicators . . . . . . . . . . . . . . . . . . . . . . . 108
Instrument Cluster . . . . . . . . . . . . . . . 109
Speedometer . . . . . . . . . . . . . . . . . . . . . . 112
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . 112
Trip Odometer . . . . . . . . . . . . . . . . . . . . 112
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 112
Fuel Gauge . . . . . . . . . . . . . . . . . . . . . . . . 112
Engine Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Seat Belt Reminders . . . . . . . . . . . . . . 113
Airbag Readiness Light . . . . . . . . . . 114 Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . 114
Charging System Light . . . . . . . . . . . 115
Malfunction Indicator Lamp (Check Engine Light) . . . . . . . . . . . 115
Brake System Warning Light . . . . 117
Electric Parking Brake Light . . . . . 117
Service Electric Parking Brake Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Antilock Brake System (ABS) Warning Light . . . . . . . . . . . . . . . . . . 118
Performance Shifting Light . . . . . . 119
All-Wheel-Drive Light . . . . . . . . . . . . 119
Lane Keep Assist (LKA) Light . . . 119
Vehicle Ahead Indicator . . . . . . . . . 119
Pedestrian Ahead Indicator . . . . . . 120
Traction Off Light . . . . . . . . . . . . . . . . 120
StabiliTrak OFF Light . . . . . . . . . . . . 120
Traction Control System (TCS)/ StabiliTrak Light . . . . . . . . . . . . . . . . 120
Engine Coolant Temperature Warning Light
(Uplevel Only) . . . . . . . . . . . . . . . . . . . 121
Driver Mode Control Light . . . . . . . 121
Tire Pressure Light . . . . . . . . . . . . . . . 121
Engine Oil Pressure Light . . . . . . . . 122
Low Fuel Warning Light . . . . . . . . . 122
Security Light . . . . . . . . . . . . . . . . . . . . . 123
High-Beam On Light . . . . . . . . . . . . . 123
Lamps On Reminder . . . . . . . . . . . . . 123 Cruise Control Light . . . . . . . . . . . . . . 123
Door Ajar Light . . . . . . . . . . . . . . . . . . . 124
Information Displays
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . . . . . 124
Head-Up Display (HUD) . . . . . . . . . 126
Vehicle Messages
Vehicle Messages . . . . . . . . . . . . . . . . . 129
Engine Power Messages . . . . . . . . . . 130
Vehicle Speed Messages . . . . . . . . . 130
Vehicle Personalization
Vehicle Personalization . . . . . . . . . . 130
Universal Remote System
Universal Remote System . . . . . . . . 135
Universal Remote System Programming . . . . . . . . . . . . . . . . . . . 135
Universal Remote System Operation . . . . . . . . . . . . . . . . . . . . . . . . 137