wheel size CADILLAC LYRIC 2023 Owners Manual

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
72 Seats and Restraints
In addition, the vehicle has a
passenger sensing system for
the front outboard passenger
position, which includes
sensors that are part of the
passenger seat. The
passenger sensing system
may not operate properly if
the original seat trim is
replaced with non-GM covers,
upholstery, or trim; or with GM
covers, upholstery, or trim
designed for a different
vehicle. Any object, such as an
aftermarket seat heater or a
comfort-enhancing pad or
device, installed under or on
top of the seat fabric, could
also interfere with the
operation of the passenger
sensing system. This could
either prevent proper
deployment of the passenger
airbag(s) or prevent the
passenger sensing system
from properly turning off the
passenger airbag(s). See
Passenger Sensing System
066. If the vehicle has rollover
roof-rail airbags, see Different
Size Tires and Wheels
0352
for additional important
information.
If the vehicle must be modified
because you have a disability
and have questions about
whether the modifications will
affect the vehicle's airbag
system, or if you have
questions about whether the
airbag system will be affected
if the vehicle is modified for
any other reason, call
Customer Assistance. See
Customer Assistance Offices
0 386.
Airbag System Check
The airbag system does not
need regularly scheduled
maintenance or replacement.
Make sure the airbag
readiness light is working. See
Airbag Readiness Light 0112.
Caution
If an airbag covering is
damaged, opened, or broken,
the airbag may not work
properly. Do not open or
break the airbag coverings.
If there are any opened or
broken airbag coverings,
have the airbag covering
and/or airbag module
replaced. For the location of
the airbags, see Where Are
the Airbags? 061. See your
dealer for service.
Replacing Airbag
System Parts after a
Crash
{Warning
A crash can damage the
airbag systems in the
vehicle. A damaged airbag
system may not properly
protect you and your
passenger(s) in a crash,
(Continued)

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
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Vehicle Care 307
Vehicle Care
General Information
General Information . . . . . . 308
California PerchlorateMaterials
Requirements . . . . . . . . . . . . . 308
Accessories and Modifications . . . . . . . . . . . . . 308
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . 309
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Underhood Compartment Overview . . . . . . . . . . . . . . . . . . . . 312
Cooling System . . . . . . . . . . . . . 313
Washer Fluid . . . . . . . . . . . . . . . . 314
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . 315
Brake Fluid . . . . . . . . . . . . . . . . . . . 316
Battery - North America . . . . . . . . . . . . . . . . . . . . . . 317
Park Brake and P (Park) Mechanism Check . . . . . . . 320
Wiper Blade Replacement . . . . . . . . . . . . . . 320
Windshield Replacement . . . . . . . . . . . . . . . 321
Gas Strut(s) . . . . . . . . . . . . . . . . . . 321
Headlamp Aiming
Front Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . . 322
Bulb Replacement
Bulb Replacement . . . . . . . . . 323
LED Lighting . . . . . . . . . . . . . . . . 323
Electrical System
High Voltage Devices andWiring . . . . . . . . . . . . . . . . . . . . . . . 323
Electrical System Overload . . . . . . . . . . . . . . . . . . . . 323
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 325
Underhood Compartment Fuse Block . . . . . . . . . . . . . . . . . 326
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . 331
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
All-Season Tires . . . . . . . . . . . 335
Winter Tires . . . . . . . . . . . . . . . . 336
Self-Sealing Tires . . . . . . . . . 336
Low-Profile Tires . . . . . . . . . . 337
Tire Sidewall Labeling . . . . 337
Tire Designations . . . . . . . . . . 338
Tire Terminology andDefinitions . . . . . . . . . . . . . . . . . 339
Tire Pressure . . . . . . . . . . . . . . . 342 Tire Pressure Monitor
System . . . . . . . . . . . . . . . . . . . . . . 343
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . 344
Tire Inspection . . . . . . . . . . . . . 347
Tire Rotation . . . . . . . . . . . . . . . 348
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . 349
Buying New Tires . . . . . . . . . 350
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . 352
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . . . 352
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . 354
Wheel Replacement . . . . . . 354
Tire Chains . . . . . . . . . . . . . . . . . . 355
If a Tire Goes Flat . . . . . . . . . 355
Jump Starting
Jump Starting - North America . . . . . . . . . . . . . . . . . . . . . 356
Towing the Vehicle
Transporting a DisabledVehicle . . . . . . . . . . . . . . . . . . . . . . 359
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . . . . 362

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
336 Vehicle Care
roads is expected. All-season
tires provide adequate
performance for most winter
driving conditions, but they
may not offer the same level
of traction or performance as
winter tires on snow or
ice-covered roads. See Winter
Tires0336.
Winter Tires
This vehicle was not originally
equipped with winter tires.
Winter tires are designed for
increased traction on snow
and ice-covered roads.
Consider installing winter tires
on the vehicle if frequent
driving on ice or snow covered
roads is expected. See your
dealer for details regarding
winter tire availability and
proper tire selection. Also, see
Buying New Tires 0350.
With winter tires, there may
be decreased dry road
traction, increased road noise,
and shorter tread life. After changing to winter tires, be
alert for changes in vehicle
handling and braking.
If using winter tires:
.Use tires of the same brand
and tread type on all four
wheel positions.
.Use only radial ply tires of
the same size, load range,
and speed rating as the
original equipment tires.
Winter tires with the same
speed rating as the original
equipment tires may not be
available for H, V, W, Y, and ZR
speed rated tires. If winter
tires with a lower speed rating
are chosen, never exceed the
tire's maximum speed
capability.
Self-Sealing Tires
This vehicle may have
self-sealing tires. These tires
have a material inside that can
seal punctures from common
road hazards, such as nails
and screws, in the tread area.
The tire may lose air pressure if the sidewall is damaged or
the tread puncture is too
large. If the Tire Pressure
Monitor System indicates the
tire pressure is low, inspect
the tire for damage and inflate
it to the recommended
pressure. If the tire is unable
to maintain the recommended
pressure, contact the nearest
authorized GM servicing
facility immediately for
inspection and repair or
replacement. To locate the
nearest GM servicing facility,
call GM Customer Assistance.
Caution
Do not drive on a deflated
self-sealing tire as this could
damage the tire. Make sure
the tire is inflated to the
recommended pressure or
have it immediately repaired
or replaced.
When tire replacement is
needed replace with a
self-sealing tire, because the

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 337
vehicle does not come with a
spare tire or tire changing
equipment.
Low-Profile Tires
If the vehicle has
265/50R20 or 275/40R22
size tires, they are
classified as low-profile
tires.Caution
Low-profile tires are more
susceptible to damage from
road hazards or curb impact
than standard profile tires.
Tire and/or wheel assembly
damage can occur when
coming into contact with
road hazards like potholes,
or sharp edged objects,
or when sliding into a curb.
The warranty does not
cover this type of damage.
Keep tires set to the correct
inflation pressure and when (Continued)
Caution (Continued)
possible, avoid contact with
curbs, potholes, and other
road hazards.
Tire Sidewall Labeling
Useful information about a
tire is molded into its
sidewall. The example
shows a typical passenger
tire sidewall.
Passenger Tire Example
(1) Tire Size:The tire size
is a combination of letters
and numbers used to
define a particular tire's
width, height, aspect ratio,
construction type, and
service description. See the
“Tire Size” illustration later
in this section.
(2) TPC Spec (Tire
Performance Criteria
Specification)
:Original
equipment tires designed
to GM's specific tire
performance criteria have a
TPC specification code
molded onto the sidewall.
GM's TPC specifications
meet or exceed all federal
safety guidelines.
(3) DOT (Department of
Transportation)
:The
Department of
Transportation (DOT) code
indicates that the tire is in
compliance with the U.S.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 339
(2) Tire Width:The 3-digit
number indicates the tire
section width in millimeters
from sidewall to sidewall.
(3) Aspect Ratio
:A 2-digit
number that indicates the
tire height-to-width
measurements. For
example, if the tire size
aspect ratio is 75, as
shown in item (3) of the
illustration, it would mean
that the tire's sidewall is
75 percent as high as it
is wide.
(4) Construction Code
:A
letter code is used to
indicate the type of ply
construction in the tire. The
letter "R" means radial ply
construction; the letter "D"
means diagonal or bias ply
construction.
(5) Rim Diameter
:
Diameter of the wheel in
inches. (6) Service Description
:
These characters
represent the load index
and speed rating of the
tire. The load index
represents the load
carrying capacity a tire is
certified to carry. The
speed rating is the
maximum speed a tire is
certified to carry a load.
Tire Terminology and
Definitions
Air Pressure:The amount
of air inside the tire
pressing outward on each
square inch of the tire. Air
pressure is expressed
in kPa (kilopascal) or psi
(pounds per square inch).
Aspect Ratio
:The
relationship of a tire's
height to its width. Belt
:A rubber coated layer
of cords that is located
between the plies and the
tread. Cords may be made
from steel or other
reinforcing materials.
Bead
:The tire bead
contains steel wires
wrapped by steel cords
that hold the tire onto
the rim.
Bias Ply Tire
:A pneumatic
tire in which the plies are
laid at alternate angles less
than 90 degrees to the
centerline of the tread.
Cold Tire Pressure
:The
amount of air pressure in a
tire, measured in kPa
(kilopascal) or psi (pounds
per square inch) before a
tire has built up heat from
driving. See Tire Pressure
0 342.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
348 Vehicle Care
.The tread or sidewall is
cracked, cut, or snagged
deep enough to show
cord or fabric.
.The tire has a bump,
bulge, or split.
.The tire has a puncture,
cut, or other damage that
cannot be repaired well
because of the size or
location of the damage.
Tire Rotation
Tires should be rotated
according to the interval
listed in the maintenance
schedule. See Maintenance
Schedule0376.
Tires are rotated to
achieve a more uniform
wear for all tires. The first
rotation is the most
important. Anytime unusual wear is
noticed, rotate the tires as
soon as possible, check for
proper tire inflation
pressure, and check for
damaged tires or wheels.
If the unusual wear
continues after the
rotation, check the wheel
alignment. See When It Is
Time for New Tires
0349
and Wheel Replacement
0 354.
Use this rotation pattern
when rotating the tires. Adjust the front and rear
tires to the recommended
inflation pressure on the
Tire and Loading
Information label after the
tires have been rotated.
See Tire Pressure
0342
and Vehicle Load Limits
0 202.
Reset the Tire Pressure
Monitor System. See Tire
Pressure Monitor
Operation 0344.
Check that all wheel nuts
are properly tightened. See
“Wheel Nut Torque” under
Capacities and
Specifications 0383.
{Warning
Rust or dirt on a wheel,
or on the parts to which it
is fastened, can cause
wheel nuts to become
loose over time. The
(Continued)

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 351
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 Rotation0348.
{Warning
Tires could explode
during improper service.
Attempting to mount or
dismount a tire could
cause injury or death.
Only your 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 and cause a
crash. Use only radial-ply
tires with the wheels on
the vehicle. Winter tires with the same
speed rating as the original
equipment tires may not be
available for H, V, W, Y and
ZR speed rated tires. Never
exceed the winter tires’
maximum speed capability
when using winter tires
with a lower speed rating.
If the vehicle tires must be
replaced with a tire that
does not have a TPC Spec
number, make sure they
are the same size, load
range, speed rating, and
construction (radial) as the
original tires.
The Tire and Loading
Information label indicates
the original equipment tires
on the vehicle. See Vehicle
Load Limits
0202.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
352 Vehicle Care
Different Size Tires
and Wheels
If wheels or tires are installed
that are a different size than
the original equipment wheels
and tires, vehicle performance,
including its braking, ride and
handling characteristics,
stability, and resistance to
rollover may be affected. If the
vehicle has electronic systems
such as antilock brakes,
rollover airbags, traction
control, electronic stability
control, or All-Wheel Drive, the
performance of these systems
can also be affected.
{Warning
If different sized wheels are
used, there may not be an
acceptable level of
performance and safety if
tires not recommended for
those wheels are selected.
This increases the chance of
a crash and serious injury.(Continued)
Warning (Continued)
Only use GM specific wheel
and tire systems developed
for the vehicle, and have
them properly installed by a
GM certified technician.
See Buying New Tires 0350
and Accessories and
Modifications 0308.
Uniform Tire Quality
Grading
The following information
relates to the system
developed by the United
States National Highway
Traffic Safety
Administration (NHTSA),
which grades tires by
treadwear, traction, and
temperature performance.
This applies only to
vehicles sold in the United
States. The grades are
molded on the sidewalls of
most passenger car tires. The Uniform Tire Quality
Grading (UTQG) system
does not apply to deep
tread, winter tires, compact
spare tires, tires with
nominal rim diameters of
10 to 12 inches
(25 to 30 cm), or to some
limited-production tires.
While the tires available on
General Motors passenger
cars and light trucks may
vary with respect to these
grades, they must also
conform to federal safety
requirements and
additional General Motors
Tire Performance Criteria
(TPC) standards.
Quality grades can be
found where applicable on
the tire sidewall between
tread shoulder and
maximum section width.
For example:

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 355
Warning (Continued)
When replacing wheels, use
a new GM original
equipment wheel.
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.
Tire Chains
Caution
If the vehicle is equipped
with tire size 265/50R20,
use tire winter traction
devices only where legal and
only when necessary. Only
use textile traction devices,(Continued)
Caution (Continued)
such as tire snow socks,
that are the proper size for
the tires. Traction devices
must be installed only on the
tires of the drive axle. Drive
slowly and follow the
traction device
manufacturer’s instructions.
Driving too fast or spinning
the wheels can damage the
traction device.
If a Tire Goes Flat
It is unusual for a tire to blow
out while driving, especially if
the tires are maintained
properly. If air goes out of a
tire, it is much more likely to
leak out slowly. See Tires
0334 for additional
information. But if there ever
is a blowout, here are a few
tips about what to expect and
what to do:
If a front tire fails, the flat tire
creates a drag that pulls the
vehicle toward that side. Take your foot off the accelerator
pedal and grip the steering
wheel firmly. Steer to maintain
lane position, and then gently
brake to a stop, well off the
road, if possible.
A rear blowout, particularly on
a curve, acts much like a skid
and may require the same
correction as used in a skid.
Stop pressing the accelerator
pedal and steer to straighten
the vehicle. It may be very
bumpy and noisy. Gently brake
to a stop, well off the road,
if possible.
The vehicle has no spare tire,
no tire changing equipment,
and no place to store a tire.
If the vehicle has self-sealing
tires, see Self-Sealing Tires
0
336. Tread punctures
typically will not cause tires to
lose air. However, if the vehicle
does get a flat tire, there is no
spare tire, tire changing
equipment, or place to store a
tire. Contact Roadside Service
0 388 for help.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
420 INDEX
Service (cont'd)Maintenance, General
Information . . . . . . . . . . . . . . . . 375
Parts Identification . . . . . . . 382
Scheduling Appointments . . . . . . . . . . . . . 390
Vehicle Soon Light . . . . . . . . . 115
Servicing the Airbag . . . . . . . . . . . 71
Settings . . . . . . . . . . . . . . . . . . . . . . . . . 176
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . 209
Out of Park . . . . . . . . . . . . . . . . . . . 210
Side Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . . . 277
Signals, Turn and Lane-Change . . . . . . . . . . . . . . . . 146
Software Updates . . . . . . . . . . . 155
Specifications and Capacities . . . . . . . . . . . . . . . . . . . . 383
Speedometer . . . . . . . . . . . . . . . . . . 110
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . 119
Start Remote . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Start Assist, Hill . . . . . . . . . . . . . . . 218
Starting and Stopping the Vehicle . . . . . . . . . . . . . . . . . . . 208 Status
Charging Feedback . . . . . . . 289
Steering . . . . . . . . . . . . . . . . . . . . . . . . . 197 Assist, BlindZone (BZSA) . . . . . . . . . . . . . . . . 279
Heated Wheel . . . . . . . . . . . . . . . . 99
Wheel Adjustment . . . . . . . . . . 99
Wheel Controls . . . . . . . . . . . . . 152
Storage Center Console . . . . . . . . . . . . . . 95
Compartments . . . . . . . . . . . . . . . 94
Cupholders . . . . . . . . . . . . . . . . . . . . 95
Glove Box . . . . . . . . . . . . . . . . . . . . . . 94
Instrument Panel Areas . . . 94
Storage Areas Cargo Cover . . . . . . . . . . . . . . . . . . 95
Cargo Management
System . . . . . . . . . . . . . . . . . . . . . . . . 97
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
Stuck Vehicle . . . . . . . . . . . . . . . . . 202
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . 35
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Super Cruise . . . . . . . . . . . . . . . . . . 236
Surround Video
Recorder . . . . . . . . . . . . . . . . . . . . . 282
Surround Vision System . . . . . . . . . . . . . . . . . . . . . . . . 258 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Navigation . . . . . . . . . . . . . . . . . . . . 164
System Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Driver Assistance . . . . . . . . . 255
Forward CollisionAlert (FCA) . . . . . . . . . . . . . . . . . 270
Global Positioning . . . . . . . . . . 165
Infotainment . . . . . . . . . . . . . . . . 399
Rear Cross Traffic Alert . . . . . . . . . . . . . . . . . . . . . . . . . 269
Surround Vision . . . . . . . . . . . . 258
T
Teen Driver . . . . . . . . . . . . . . . . . . . . . 178
Text Telephone (TTY) Users . . . . . . . . . . . . . . . . . . . . . . . . . . 387
Theft-Deterrent Systems . . . . . . . . . . . . . . . . . . . . . . . . 27
Immobilizer . . . . . . . . . . . . . . . . . . . . 27
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
All-Season . . . . . . . . . . . . . . . . . . . 335
Buying New Tires . . . . . . . . . . 350
Chains . . . . . . . . . . . . . . . . . . . . . . . . 355
Designations . . . . . . . . . . . . . . . . 338
Different Size . . . . . . . . . . . . . . . 352
If a Tire Goes Flat . . . . . . . . . 355