2021 CADILLAC XT6 tire pressure monitor

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
VEHICLE CARE 353
month, remove the tires or raise the
vehicle to reduce the weight from the
tires.
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec) system
rating. When replacement tires are
needed, GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec system
considers over a dozen critical
specifications that impact the
overall performance of the vehicle,
including brake system
performance, ride and handling,
traction control, and tire pressure
monitoring performance. GM's
TPC Spec number is molded onto
the tire's sidewall near the tire
size. If the tires have an all-season
tread design, the TPC Specnumber will be followed by MS for
mud and snow. See
Tire Sidewall
Labeling 0339 for additional
information.
GM recommends replacing worn
tires in complete sets of four.
Uniform tread depth on all tires
will help to maintain the
performance of the vehicle.
Braking and handling performance
may be adversely affected if all the
tires are not replaced at the same
time. If proper rotation and
maintenance have been done, all
four tires should wear out at
about the same time. However,
if it is necessary to replace only
one axle set of worn tires, place
the new tires on the rear axle. See
Tire Rotation 0351.
{Warning
Tires could explode during
improper service. Attempting to
mount or dismount a tire could
cause injury or death. Only your
(Continued)
Warning (Continued)
dealer or authorized tire service
center should mount or
dismount the tires.
{Warning
Mixing tires of different sizes
(other than those originally
installed on the vehicle), brands,
tread patterns, or types may
cause loss of vehicle control,
resulting in a crash or other
vehicle damage. Use the correct
size, brand, and type of tire on
all wheels.
{Warning
Using bias-ply tires on the
vehicle may cause the wheel rim
flanges to develop cracks after
many miles of driving. A tire
and/or wheel could fail suddenly
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
356 VEHICLE CARE
loading, either separately or in
combination, can cause heat
buildup and possible tire failure.
Wheel Alignment and Tire
Balance
The tires and wheels were aligned and
balanced at the factory to provide the
longest tire life and best overall
performance. Adjustments to wheel
alignment and tire balancing are not
necessary on a regular basis. Consider
an alignment check if there is unusual
tire wear or the vehicle is significantly
pulling to one side or the other. Some
slight pull to the left or right,
depending on the crown of the road
and/or other road surface variations
such as troughs or ruts, is normal.
If the vehicle is vibrating when driving
on a smooth road, the tires and
wheels may need to be rebalanced.
See your dealer for proper diagnosis.
Wheel Replacement
Replace any wheel that is bent,
cracked, or badly rusted or corroded.
If wheel nuts keep coming loose, the
wheel, wheel bolts, and wheel nutsshould be replaced. If the wheel leaks
air, replace it. Some aluminum wheels
can be repaired. See your dealer if any
of these conditions exist.
Your dealer will know the kind of
wheel that is needed.
Each new wheel should have the same
load-carrying capacity, diameter,
width, offset, and be mounted the
same way as the one it replaces.
Replace wheels, wheel bolts, wheel
nuts, or Tire Pressure Monitor System
(TPMS) sensors with new GM original
equipment parts.
{Warning
Using the wrong replacement
wheels, wheel bolts, or wheel nuts
can be dangerous. It could affect
the braking and handling of the
vehicle. Tires can lose air and cause
loss of control, resulting in a crash.
Always use the correct wheel, wheel
bolts, and wheel nuts for
replacement.
Caution
The wrong wheel can also cause
problems with bearing life, brake
cooling, speedometer or odometer
calibration, headlamp aim, bumper
height, vehicle ground clearance,
and tire or tire chain clearance to
the body and chassis.
Used Replacement Wheels
{Warning
Replacing a wheel with a used one
is dangerous. How it has been used
or how far it has been driven may
be unknown. It could fail suddenly
and cause a crash. When replacing
wheels, use a new GM original
equipment wheel.
Tire Chains
{Warning
If the vehicle has 265/45R21 size
tires, do not use tire chains. There
is not enough clearance. Tire chains
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
CONNECTED SERVICES 417
MyCadillac Mobile App (If Available)
Download the myCadillac mobile app
to compatible Apple and Android
smartphones. Cadillac users can
access the following services from a
smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/
off, manage settings, and monitor
data consumption, if equipped.
.Locate a dealer and schedule
service.
.Request Roadside Service.
.Set a parking reminder with pin
drop, take a photo, make a note,
and set a timer.
.Connect with Cadillac on social
media.
Features are subject to change. For
myCadillac mobile app information
and compatibility, see my.cadillac.com.
An active OnStar or connected service
plan may be required. A compatible
device, factory-installed remote start,
and power locks are required. Data
rates apply. See www.onstar.com for
details and system limitations.
Remote Services
Contact an OnStar Advisor to unlock
the doors or sound the horn and flash
the lamps.
Marketplace
OnStar Advisors can provide offers
from restaurants and retailers on your
route, help locate hotels, or book a
room. These services vary by market.
Diagnostics
By monitoring and reporting on the
vehicle’s key systems, OnStar
Advanced Diagnostics, if equipped,
provides a way to keep up on
maintenance. Capabilities vary by
model. See www.onstar.com for details
and system limitations. Features are
subject to change. For updates on
feature capabilities, see
my.cadillac.com. Message and data
rates may apply.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/9/21
424 INDEX
Lights (cont'd)Lane Keep Assist . . . . . . . . . . . . . . . . . . 119
Low Fuel Warning . . . . . . . . . . . . . . . . 122
Seat Belt Reminders . . . . . . . . . . . . . . 113
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 120
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 121
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . . . . . 120
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 120
Lock Steering Column . . . . . . . . . . . . . . . . . . . 28
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . 18
Delayed Locking . . . . . . . . . . . . . . . . . . . 18
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lockout Protection . . . . . . . . . . . . . . . . 18
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . 18
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 221
Low Fuel Warning Light . . . . . . . . . . . 122
Lower Anchors and Tethers for Children (LATCH System) . . . . . . . . . 79
Lumbar Adjustment . . . . . . . . . . . . . . . . . 42
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . 42M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 386
Maintenance Schedule . . . . . . . . . . . . . 380 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 389
Malfunction Indicator Lamp . . . . . . . 115
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . 244
Map Data Updates . . . . . . . . . . . . . . . . . . 175
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Media Avoiding Untrusted Devices . . . . . 157
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 43
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . 130
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 130
Mirror Rear Camera . . . . . . . . . . . . . . . . . . . . . . . 32
Mirrors Automatic Dimming . . . . . . . . . . . . . . . 32
Automatic Dimming Rearview . . . . 32
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Mirrors (cont'd)
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . 32
Mirrors, Interior Rearview . . . . . . . . . . . 32
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 Driver Control . . . . . . . . . . . . . . . . . . . . . 250
Monitor System, Tire Pressure . . . . . 346
Multi-band Antenna . . . . . . . . . . . . . . . . 157
N
Navigation Connected Services . . . . . . . . . . . . . . . 415
Destination . . . . . . . . . . . . . . . . . . . . . . . . 167
Using the System . . . . . . . . . . . . . . . . . 162
Navigation Symbols . . . . . . . . . . . . . . . . 166
Net, Convenience . . . . . . . . . . . . . . . . . . . . 98
New Vehicle Break-In . . . . . . . . . . . . . . . 232
Night Vision System . . . . . . . . . . . . . . . . 278
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Engine Oil Life System . . . . . . . . . . . 313
Pressure Light . . . . . . . . . . . . . . . . . . . . . 122
Older Children, Restraints . . . . . . . . . . . 72

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/9/21
428 INDEX
Tires (cont'd)Different Size . . . . . . . . . . . . . . . . . . . . . . 354
If a Tire Goes Flat . . . . . . . . . . . . . . . . 357
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . 350
Pressure . . . . . . . . . . . . . . . . . . . . . 343, 345
Pressure Light . . . . . . . . . . . . . . . . . . . . . 121
Pressure Monitor Operation . . . . . . 347
Pressure Monitor System . . . . . . . . 346
Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 351
Sidewall Labeling . . . . . . . . . . . . . . . . . 339
Terminology and Definitions . . . . 341
Uniform Tire Quality Grading . . . . 354
Wheel Alignment and Tire
Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 356
Wheel Replacement . . . . . . . . . . . . . . 356
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
Top Tier Fuel . . . . . . . . . . . . . . . . . . . . . . . . 286
Towing Driving Characteristics . . . . . . . . . . . 290
Equipment . . . . . . . . . . . . . . . . . . . . . . . . 297
General Information . . . . . . . . . . . . . . 289
Recreational Vehicle . . . . . . . . . . . . . . 368
Trailer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Trailer Sway Control (TSC) . . . . . . . 300
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367 Traction
Control System
(TCS)/StabiliTrak Light . . . . . . . . . 120
Off Light . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Traction Control/Electronic Stability Control . . . . . . . . . . . . . . . . . . . 248
Trademarks and License
Agreements . . . . . . . . . . . . . . . . . . . . . . . . 199
Trailer Sway Control (TSC) . . . . . . . . . . . . . . . 300
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
Transmission Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 240
Fluid, Automatic . . . . . . . . . . . . . . . . . . 314
Transportation Program, Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Trip Odometer . . . . . . . . . . . . . . . . . . . . . . 112
Turn and Lane-Change Signals . . . . 142
U
Uniform Tire Quality Grading . . . . . . 354
Universal Remote System . . . . . . . . . . 135 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Programming . . . . . . . . . . . . . . . . . . . . . . 135
Updates Map Data . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Software . . . . . . . . . . . . . . . . . . . . . . . . . . . 152 USB Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Using the Navigation System . . . . . . 162
Using the System . . . . . . . . . . . . . . . . . . . 149
Using This Manual . . . . . . . . . . . . . . . . . . . . 2
V
Vehicle
Alarm System . . . . . . . . . . . . . . . . . . . . . . 27
Canadian Owners . . . . . . . . . . . . . . . . . . . . 1
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Identification Number (VIN) . . . . . 393
Load Limits . . . . . . . . . . . . . . . . . . . . . . . 228
Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Personalization . . . . . . . . . . . . . . . . . . . 130
Remote Start . . . . . . . . . . . . . . . . . . . . . . . 14
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Speed Messages . . . . . . . . . . . . . . . . . . . 130
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367
Vehicle Ahead Indicator . . . . . . . . . . . . 119
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 343
Vehicle Data Recording and Privacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408
Vehicle Positioning . . . . . . . . . . . . . . . . . 174
Vehicle Security Steering Column Lock . . . . . . . . . . . . . 28
Ventilation, Air . . . . . . . . . . . . . . . . . . . . . 215