automatic transmission CADILLAC XT6 2023 Owner's Manual

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
348 Driving and Operating
towing, install extended side
view mirrors, even if not
required.
.Do not tow a trailer during
the first 800 km (500 mi) of
vehicle use to prevent
damage to the engine, axle,
or other parts.
.GM recommends performing
an oil change to the vehicle
before heavy towing.
.Do not drive over 80 km/h
(50 mph) and do not make
starts at full throttle during
the first 800 km (500 mi) of
trailer towing.
.Vehicles can tow in D (Drive).
If the transmission
downshifts too often, a
lower gear may be selected
using Manual Mode. See
Manual Mode0271.
If equipped, the following
driver assistance features
should be turned off when
towing a trailer:
.Adaptive Cruise
Control (ACC)
.Super Cruise Control
.Park Assist
.Automatic Parking
Assist (APA)
.Reverse Automatic
Braking (RAB)
If equipped, the following
driver assistance features
should be turned to alert or
off when towing a trailer:
.Automatic Emergency
Braking (AEB)
.Intelligent Brake Assist (IBA)
.Front Pedestrian
Braking (FPB)
If equipped with Lane Change
Alert (LCA), the LCA detection
zones that extend back from
the side of the vehicle do not
move further back when a
trailer is towed. Use caution
while changing lanes when
towing a trailer.
If equipped with Rear Cross
Traffic Alert (RCTA), use
caution while backing up when
towing a trailer, as the RCTA
detection zones that extend out from the back of the
vehicle do not move further
back when a trailer is towed.
{Warning
To prevent serious injury or
death from carbon monoxide
(CO), when towing a trailer:
.Do not drive with the
liftgate, trunk/hatch,
or rear-most
window open.
.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.
See
“Climate Control
Systems” in the Index.
For more information about
carbon monoxide, see
Engine Exhaust 0265.
Towing a trailer requires
experience. The combination
of the vehicle and trailer is
longer and not as responsive

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
362 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . 363
California PerchlorateMaterials
Requirements . . . . . . . . . . . . . 363
Accessories and Modifications . . . . . . . . . . . . . 363
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . 364
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 367
Engine Oil . . . . . . . . . . . . . . . . . . . . 370
Engine Oil Life System . . . 373
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 374
Engine Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . 374
Engine Air Cleaner/ Filter . . . . . . . . . . . . . . . . . . . . . . . . . 375
Cooling System . . . . . . . . . . . . 376
Engine Overheating . . . . . . . 381
Washer Fluid . . . . . . . . . . . . . . . . 382
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 383
Brake Fluid . . . . . . . . . . . . . . . . . . 384 Battery - North
America . . . . . . . . . . . . . . . . . . . . . 385
Park Brake and P (Park) Mechanism Check . . . . . . . 386
Wiper Blade
Replacement . . . . . . . . . . . . . . 386
Windshield Replacement . . . . . . . . . . . . . . 388
Gas Strut(s) . . . . . . . . . . . . . . . . . 388
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . 389
Bulb Replacement
LED Lighting . . . . . . . . . . . . . . . . 390
Electrical System
Electrical SystemOverload . . . . . . . . . . . . . . . . . . . 390
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 391
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . 392
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . 396
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . 398
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 400
All-Season Tires . . . . . . . . . . . . 401 Winter Tires . . . . . . . . . . . . . . . . 402
Tire Sidewall Labeling . . . 402
Tire Designations . . . . . . . . . 405
Tire Terminology and
Definitions . . . . . . . . . . . . . . . . . 405
Tire Pressure . . . . . . . . . . . . . . . 408
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . 410
Tire Pressure Monitor System . . . . . . . . . . . . . . . . . . . . . . . 411
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . 412
Tire Inspection . . . . . . . . . . . . . . 416
Tire Rotation . . . . . . . . . . . . . . . . 417
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Buying New Tires . . . . . . . . . . 419
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 421
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . . 421
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . 423
Wheel Replacement . . . . . . 423
Tire Chains . . . . . . . . . . . . . . . . . . 424
If a Tire Goes Flat . . . . . . . . . 425
Tire Changing . . . . . . . . . . . . . . 426
Compact Spare Tire . . . . . . 433

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
374 Vehicle Care
It cannot be reset
accurately until the next oil
change.
The oil life system can also be
reset as follows: 1. Display REMAINING OIL LIFE on the DIC. See Driver
Information Center (DIC)
0144.
2. Fully press and release the accelerator pedal three
times within five seconds.
If the CHANGE ENGINE
OIL SOON message is not
on, the system is reset.
The system is reset when the
CHANGE ENGINE OIL SOON
message is off.
If the CHANGE ENGINE OIL
SOON message comes back
on when the vehicle is started,
the engine oil life system has
not been reset. Repeat the
procedure.Automatic
Transmission Fluid
A transmission fluid leak is the
only reason for fluid loss. If a
leak occurs, take the vehicle to
your dealer and have it
repaired as soon as possible.
Caution
Use of the incorrect
automatic transmission fluid
may damage the vehicle, and
the damage may not be
covered by the vehicle
warranty. Always use the
correct automatic
transmission fluid. See
Recommended Fluids and
Lubricants 0458.
See your dealer to have the
fluid and filter changed at the
intervals listed in the
Maintenance Schedule 0454.
Engine Air Filter Life
System
If equipped, this feature
provides the engine air filter’s
remaining life and best timing
for a change. The timing to
change an engine air filter
depends on driving and
environmental conditions.
When to Change the
Engine Air Filter
When the Driver Information
Center (DIC) displays a
message to replace the engine
air filter at the next oil change,
follow this timing.
When the DIC displays a
message to replace the engine
air filter soon, replace the
engine air filter at the earliest
convenience.
The system must be reset
after the engine air filter is
changed.
If the DIC displays a message
to check the engine air filter
system, see your dealer.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
380 Vehicle Care
coolant surge tank until
the level reaches the mark
pointed to on the front of
the coolant surge tank.
5. Replace the pressure cap tightly.
6. Verify coolant level after the engine is shut off and
the coolant is cold.
If necessary, repeat
coolant fill procedure
Step 1–6.
Caution
If the pressure cap is not
tightly installed, coolant loss
and engine damage may
occur. Be sure the cap is
properly and tightly secured.
Automatic Coolant
Service Fill Instructions
(2.0L Engine Only)
If equipped, this feature
assists in filling and removing
air from the cooling system
after service of components
or when coolant is added after
being too low. To activate the fill and air
removal process:
1. With a cold system,
disconnect the vent line
from the port near the cap
on the surge tank. Add
coolant to the indicated
mark on the surge tank.
2. Reconnect the vent line to the surge tank and replace
the cap on the surge tank.
3. Connect the vehicle to a battery charger.
4. Put the vehicle in Service Mode. See Ignition
Positions 0257. 5. Turn off the air
conditioning.
6. Set the parking brake.
7. At the same time, press the accelerator and the
brake for automatic
transmission vehicles for
two seconds, then release.
At the end of the cycle, check
the coolant level in the surge
tank and add coolant, if it is
low. Turn off the vehicle, allow
the Engine Control Module
(ECM) to go to sleep, about
two minutes, and repeat
steps 3-7.
Listen for pump activation and
movement of the control
valves while watching the level
of the tank. If the tank
empties, turn the ignition off,
carefully remove the surge
tank cap, refill to the indicated
mark and repeat steps 3-6.
The fill and air removal
process will run for
approximately 10 minutes.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
394 Vehicle Care
Fuses UsageF3 DC DC Transformer 1
F4 –
F5 DC DC Transformer 2
F6 Amplifier 1 F7 Front Blower
F8 Starter 3
F9 –
F10 –
F11 –
F12 Front Wiper
F13 Starter 2
F14 –
F15 Rear Wiper 1
F16 –
F17 –
F18 Automatic Headlamp
Leveling Module
F19 – Fuses Usage
F20 –
F21 –
F22 Electronic Brake Control Module
F23 Parking/Trailer Lamps
F24 Right Trailer Stoplamp/
Turnlamp
F25 Steering Column Lock
F26 –
F27 Left Trailer Stoplamp/
Turnlamp
F28 –
F29 –
F30 Washer Pump F31 –
F32 Headlamp Left
F33 –
F34 Horn Fuses Usage
F35 –
F36 –
F37 Headlamp Right
F38 Not Used/Spare
F39 Transmission Control Module 1
F40 Left Rear Bus Electrical Center/
DC DC Ignition
F41 Instrument Cluster
F42 Heating, Ventilation, and
Air Conditioning/
Central Gateway
Module/Run/
Crank
F43 Head-up Display/ Reflective Light
Auxiliary

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
438 Vehicle Care
have right or left-hand
threads. Use caution when
installing or removing the
tow eye.
The vehicle must be in
N (Neutral) and the electric
parking brake must be
released when loading the
vehicle onto a flatbed tow
truck.
.If the vehicle is equipped
with car wash mode and has
12-volt battery power, refer
to“Car Wash Mode” under
Automatic Transmission
0 266 to place the vehicle in
N (Neutral).
.If the 12-volt battery is dead
and/or the engine will not
start, the vehicle will not
move. Try to jump start the
vehicle. Refer to Jump
Starting - North America
0 434 and if the jump start is
successful, retry the “Car
Wash Mode” procedure.
.If jump starting is
unsuccessful, the vehicle will
not move. Tire skates or dollies must be used under
the non-rolling tires to
prevent vehicle damage.
Front Attachment Points
The vehicle is equipped with
specific attachment points to
be used by the towing
provider. These holes may be
used to pull the vehicle from a
flat road surface onto the
flatbed tow truck.
Recreational Vehicle
Towing
Recreational vehicle towing
means towing the vehicle
behind another vehicle, such
as behind a motor home. The
two most common types of
recreational vehicle towing are
known as dinghy towing and
dolly towing. Dinghy towing is
towing the vehicle with all four
wheels on the ground. Dolly
towing is towing the vehicle
with two wheels on the
ground and two wheels up on
a device known as a dolly.
Here are some important
things to consider before
recreational vehicle towing:
.Become familiar with the
local laws that apply to
recreational vehicle towing.
These laws may vary by
region.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
456 Service and Maintenance
conditions the indicator may
come on before 12 000 km
(7,500 mi).
* Footnote: Under extreme
driving conditions listed
above, it may be necessary
to replace your spark plugs
at more frequent intervals.
For further assistance in
determining the most
suitable service maintenance
intervals for your vehicle,
please contact your
authorized GM Dealer.
Extreme service is for
vehicles mainly driven
off-road in four-wheel drive
or used in farming, mining,
forestry, or snow plowing.
Additional Required
Services—Severe Service
Every 72 000 km (45,000 mi)
.Change automatic
transmission fluid. Every 75 000 km
(120,000 mi)
.Change rear axle fluid,
if equipped with AWD. Do
not directly power wash the
transfer case and/or front/
rear axle output seals. High
pressure water can
overcome the seals and
contaminate the transfer
case fluid. Contaminated
fluid will decrease the life of
the transfer case and/or
axles and should be
replaced.
Owner Checks and
Services
Every Five Years
.Replace brake fluid every
five years. See Brake Fluid
0
384.
Every Seven Years
.Replace Air Conditioning
Desiccant every seven years.
The air conditioning system
requires maintenance every
seven years. This service
requires replacement of the desiccant to help the
longevity and efficient
operation of the air
conditioning system. This
service can be complex. See
your dealer.
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle
Inspection (MPVI) completed
by a GM dealer technician is a
maintenance assessment of
your vehicle. The benefit of
the MPVI is to identify and
inform the customer of service
items that require immediate
attention and those that may
require attention in the future.
The technician will perform the
following checks on your
vehicle. For a complete list of
checks, inspections, and
services, see your dealer.
Some items may not apply to
your vehicle and/or region.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
458 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name or specification, including fluids or lubricants not
listed here, can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid. Chassis Lubrication Lubricant meeting requirements of NLGI #2, Category LB or GC-LB. See your dealer.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling System 0376.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended.
See Engine Oil0370.
Fuel Additive Fuel System Treatment PLUS or equivalent.
Hood and Door Hinges, Key Lock Cylinders Multi-Purpose Lubricant. See your dealer.
Hydraulic Brake System DOT 4 Hydraulic Brake Fluid.
Power Liftgate Actuator Ball Joint, Hood Latch Assembly,
Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubricant meeting requirements of NLGI #2, Category LB or
GC-LB. See your dealer.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
464 Technical Data
ApplicationCapacities
Metric English
Fuel Tank
IFront-Wheel Drive 73.4 L
19.4 gal
IAll-Wheel Drive 82.1 L
21.7 gal
Wheel Nut Torque 190Y 140 lb ft
All capacities are approximate. When adding, be sure to fill to the approximate level, as
recommended in this manual. Recheck fluid level after filling.
*Engine cooling system capacity values are based on the entire cooling system and its
components.
Engine Specifications
Engine VIN CodeTransmission Spark Plug Gap
2.0L L4 Engine (LSY) 4Automatic 0.65–0.75 mm (0.026–
0.030 in)
3.6L V6 Engine (LGX) SAutomatic 0.80–0.90 mm (0.031–
0.035 in)
Spark plug gaps are preset by the manufacturer. Re-gapping the spark plug is not recommended
and can damage the spark plug.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
INDEX 493
Alert (cont'd)Rear Pedestrian . . . . . . . . . . . 324
Side Blind
Zone (SBZA) . . . . . . . . . . . . . . . 336
All-Season Tires . . . . . . . . . . . . . . 401
All-Wheel Drive . . . . . . . . . . . . . . . .273 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
AM-FM Radio . . . . . . . . . . . . . . . . . . . 171
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . 175
Antilock Brake System (ABS) . . . . . . . . . . . . . . . .273
Warning Light . . . . . . . . . . . . . . . 138
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 440
Interior . . . . . . . . . . . . . . . . . . . . . . . . 446
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . 208
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . 470
Assistance Systems
Driving . . . . . . . . . . . . . . . . . . . . . . . . 326
Parking and Backing . . . . . . . 314
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . 179
Automatic
Dimming Mirrors . . . . . . . . . . . . . 38
Door Locks . . . . . . . . . . . . . . . . . . . . 23 Automatic (cont'd)
Emergency
Braking (AEB) . . . . . . . . . . . . . 328
Headlamp System . . . . . . . . . . 159
Parking Assist (APA) . . . . . 320
Transmission . . . . . . . . . . . . . . . 266
Transmission Fluid . . . . . . . . 374
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . 271
Avoiding Untrusted Media Devices . . . . . . . . . . . . . . . 176
B
BatteryExterior LightingBattery Saver . . . . . . . . . . . . . . 163
Power Protection . . . . . . . . . . 163
Battery - North America . . . . . . . . . . . . . . . . 385, 434
Blade Replacement, Wiper . . . . . . . . . . . . . . . . . . . . . . . . . . 386
Bluetooth
Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Overview . . . . . . . . . . . . . . 202, 203
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
System Warning Light . . . . 136
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 383 Brakes (cont'd)
Antilock . . . . . . . . . . . . . . . . . . . . . . . . 273
Brake Assist . . . . . . . . . . . . . . . . . 276
Electric Brake Boost . . . . . . 273
Electric Parking Brake . . . . 274
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . 241 Automatic
Emergency (AEB) . . . . . . . . 328
Reverse Automatic . . . . . . . 322
Braking System FrontPedestrian (FPB) . . . . . . . . . 330
Break-In, New Vehicle . . . . . . 256
Bulb Replacement Headlamp Aiming . . . . . . . . . . 389
Buying New Tires . . . . . . . . . . . . . 419
C
Calibration
Compass . . . . . . . . . . . . . . . . . . . . . . 122
California Perchlorate Materials
Requirements . . . . . . . . . . . . . 363
California Proposition 65 Warning . . . . . . . . . . . . . . . . 1, 434
Camera
Rear Vision (RVC) . . . . . . . . . . 314
Canadian Vehicle Owners . . . . 2