2023 CADILLAC LYRIC wiring

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Seats and Restraints 71
put on an unoccupied seat.
If this is not desired, remove
the object from the seat.
{Warning
Stowing articles under the
passenger seat or between
the passenger seat cushion
and seatback may interfere
with the proper operation of
the passenger sensing
system.
Servicing the
Airbag-Equipped
Vehicle
Airbags affect how the vehicle
should be serviced. There are
parts of the airbag system in
several places around the
vehicle. Your dealer and the
service manual have
information about servicing
the vehicle and the airbag
system. To purchase a service
manual, see Publication
Ordering Information0394.
{Warning
For up to 10 seconds after
the vehicle is turned off and
the battery is disconnected,
an airbag can still inflate
during improper service. You
can be injured if you are
close to an airbag when it
inflates. Avoid yellow
connectors. They are
probably part of the airbag
system. Be sure to follow
proper service procedures,
and make sure the person
performing work for you is
qualified to do so.
Adding Equipment to
the Airbag-Equipped
Vehicle
Adding accessories that
change the vehicle's frame,
bumper system, height, front
end, or side sheet metal may
keep the airbag system from
working properly. The operation of the airbag
system can also be affected
by changing, including
improperly repairing or
replacing, any parts of the
following:
.Airbag system, including
airbag modules, front or side
impact sensors, sensing and
diagnostic module, or airbag
wiring
.Front seats, including
stitching, seams or zippers
.Seat belts
.Steering wheel, instrument
panel, overhead console,
ceiling trim, or pillar
garnish trim
.Inner door seals, including
speakers
Your dealer and the service
manual have information about
the location of the airbag
modules and sensors, sensing
and diagnostic module, and
airbag wiring along with the
proper replacement
procedures.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Instruments and Controls 113
the pretensioners, the airbag
modules, the wiring, and the
crash sensing and diagnostic
module. For more information
on the airbag system, see
Airbag System059.
The airbag readiness light
comes on for several seconds
when the vehicle is started.
If the light does not come on
then, have it fixed immediately.
{Warning
If the airbag readiness light
stays on after the vehicle is
started or comes on while
driving, it means the airbag
system might not be working
properly. The airbags in the
vehicle might not inflate in a
crash, or they could even
(Continued)
Warning (Continued)
inflate without a crash. To
help avoid injury, have the
vehicle serviced right away.
If there is a problem with the
airbag system, a Driver
Information Center (DIC)
message may also come on.
Passenger Airbag
Status Indicator
The vehicle has a passenger
sensing system. See
Passenger Sensing System
0 66 for important safety
information. The overhead
console has a passenger
airbag status indicator.
When the vehicle is started,
the passenger airbag status
indicator will light ON and OFF,
and the symbols for on and
off, for several seconds as a
system check. Then, after
several more seconds, the
status indicator will light either
ON or OFF, and either the
symbol for on or off, to let you
know the status of the front
outboard passenger frontal
airbag and knee airbag.
If the word ON, and the on
symbol, is lit on the passenger
airbag status indicator, it
means that the front outboard
passenger frontal airbag and
knee airbag are allowed to
inflate.
If the word OFF, and the off
symbol, is lit on the passenger
airbag status indicator, it
means that the passenger
sensing system has turned off
the front outboard passenger
frontal airbag and knee airbag.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Instruments and Controls 123
This light comes on when a
door is open or not securely
latched. Before driving, check
that all doors are properly
closed.
Information
Displays
Charging
Important Information about
Electric Vehicle Charging
.Charging an electric vehicle
can stress a building’s
electrical system more than
a typical household
appliance.
.Charge cord limits can vary
from vehicle to vehicle, and
increased charging rates can
stress a building’s electrical
system.
.Before plugging into any
electrical outlet, have a
qualified electrician inspect
and verify the electrical
system (electrical outlet,
wiring, junctions, andprotection devices) for
heavy-duty service at a
12 amp continuous load.
.Electrical outlets may wear
out with normal usage or
may be damaged over time,
making them unsuitable for
electric vehicle charging.
.Check the electrical outlet/
plug while charging and
discontinue use if the
electrical outlet/plug is hot,
then have the electrical
outlet serviced by a qualified
electrician.
.When outdoors, plug into an
electrical outlet that is
weatherproof while in use.
.Mount the charging cord to
reduce strain on the
electrical outlet/plug.
.Do not place the charge cord
in a position where it is
expected to be submerged
in water.
{Danger
Improper use of portable
electric vehicle charge cords
may cause a fire, electrical
shock, or burns, and may
result in damage to
property, serious injury,
or death.
.Do not use extension
cords, multi-outlet power
strips, splitters, grounding
adaptors, surge
protectors, or similar
devices.
.Do not use an electrical
outlet that is worn or
damaged, or will not hold
the plug firmly in place.
.Do not use an electrical
outlet that is not properly
grounded.
.Do not use an electrical
outlet that is on a circuit
with other electrical loads.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
292 Driving and Operating
3. Vehicle Plug Latch
4. Release Button
Important Information about
Portable Electric Vehicle
Charging
.Charging an electric vehicle
can stress a building’s
electrical system more than
a typical household
appliance.
.Before plugging into any
electrical outlet, have a
qualified electrician inspect
and verify the electrical
system (electrical outlet,
wiring, junctions, and
protection devices) for
heavy-duty service at a
12 amp continuous load for
120 Volt charge and 32 amp
for 240 Volt Charge.
.Electrical outlets may wear
out with normal usage or
may be damaged over time,
making them unsuitable for
electric vehicle charging.
.Check the electrical outlet/
plug while charging and
discontinue use if theelectrical outlet/plug is hot,
then have the electrical
outlet serviced by a qualified
electrician.
.When outdoors, plug into an
electrical outlet that is
weatherproof while in use.
.Mount the charge cord to
reduce strain on the
electrical outlet/plug.
.Do not place the charge cord
in a position where it may be
submerged in water.
{Danger
Improper use of portable
electric vehicle charge cords
may cause a fire, electrical
shock, or burns, and may
result in damage to
property, serious injury,
or death.
.Do not use extension
cords, multi-outlet power
strips, splitters, grounding
(Continued)
Danger (Continued)
adaptors, surge
protectors, or similar
devices.
.Do not use an electrical
outlet that is worn or
damaged, or will not hold
the plug firmly in place.
.Do not use an electrical
outlet that is not properly
grounded.
.Do not use an electrical
outlet that is on a circuit
with other electrical loads.
{Warning
When using electric
products, basic precautions
should always be followed,
including the following:
.Read all the safety
warnings and instructions
before using this product.
Failure to follow the
warnings and the(Continued)

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
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
Vehicle Care 309
traction control, and stability
control. These accessories or
modifications could even
cause malfunction or damage
not covered by the vehicle
warranty.
Damage to suspension
components caused by
modifying vehicle height
outside of factory settings will
not be covered by the vehicle
warranty.
Damage to vehicle
components resulting from
modifications or the
installation or use of non-GM
certified parts, including
control module or software
modifications, is not covered
under the terms of the vehicle
warranty and may affect
remaining warranty coverage
for affected parts.
GM Accessories are designed
to complement and function
with other systems on the
vehicle. See your dealer to
accessorize the vehicle usinggenuine GM Accessories
installed by a dealer
technician.
Also, see Adding Equipment to
the Airbag-Equipped Vehicle
0
71.
Vehicle Checks
Doing Your Own
Service Work
{Warning
Never try to do your own
service on high voltage
battery components. You
can be injured and the
vehicle can be damaged if
you try to do your own
service work. Service and
repair of these high voltage
battery components should
only be performed by a
trained dealer technician
with the proper knowledge
and tools.
(Continued)
Warning (Continued)
Exposure to high voltage
can cause shock, burns, and
even death. The high voltage
components in the vehicle
can only be serviced by
technicians with special
training.
High voltage components
are identified by labels. Do
not remove, open, take
apart, or modify these
components. High voltage
cable or wiring has orange
covering. Do not probe,
tamper with, cut, or modify
high voltage cable or wiring.
{Warning
Unexpected wheel motion
and/or direction when one
or more wheels are off the
ground for service work may
result in injury. The
vehicle may:(Continued)

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 323
Bulb Replacement
For the proper type of
replacement bulbs, or any bulb
changing procedure not listed
in this section, contact your
dealer.
Caution
Do not replace incandescent
bulbs with aftermarket LED
replacement bulbs. This can
cause damage to the vehicle
electrical system.
LED Lighting
This vehicle has several LED
lamps. For replacement of any
LED lighting assembly, contact
your dealer.
Electrical System
High Voltage Devices
and Wiring
{Warning
Exposure to high voltage
can cause shock, burns, and
even death. The high voltage
components in the vehicle
can only be serviced by
technicians with special
training.
High voltage components
are identified by labels. Do
not remove, open, take
apart, or modify these
components. High voltage
cable or wiring has orange
covering or labels. Do not
probe, tamper with, cut,
or modify high voltage cable
or wiring.
Electrical System
Overload
The vehicle has fuses and
circuit breakers to protect
against an electrical system
overload.
When the current electrical
load is too heavy, the circuit
breaker opens and closes,
protecting the circuit until the
current load returns to normal
or the problem is fixed. This
greatly reduces the chance of
circuit overload and fire
caused by electrical problems.
Fuses and circuit breakers
protect the wires that provide
the power to the devices in
your vehicle.
If there is a problem on the
road and a fuse needs to be
replaced, the same amperage
fuse can be borrowed. Choose
some feature of the vehicle
that is not needed to use and
replace it as soon as possible.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 325
4. If the fuse must be replacedimmediately, borrow a
replacement fuse with the
same amperage from the
fuse block. Choose a vehicle
feature that is not needed
to safely operate the
vehicle. Repeat Steps 2–3.
5. Insert the replacement fuse into the empty slot of the
blown fuse.
At the next opportunity, see
your dealer to replace the
blown fuse.
Headlamp Wiring
An electrical overload may
cause the lamps to go on and
off, or in some cases to remain
off. Have the headlamp wiring
checked right away if the
lamps go on and off or
remain off.
Windshield Wipers
If the wiper motor overheats
due to heavy snow or ice, the
windshield wipers will stop
until the motor cools and will
then restart.
Although the circuit is
protected from electrical
overload, overload due to
heavy snow or ice may cause
wiper linkage damage. Always
clear ice and heavy snow from
the windshield before using
the windshield wipers.
If the overload is caused by an
electrical problem and not
snow or ice, be sure to get it
fixed.
Fuses and Circuit
Breakers
The wiring circuits in the
vehicle are protected from
short circuits by a combination
of fuses and circuit breakers.
This greatly reduces the
chance of damage caused by
electrical problems.
{Danger
Fuses and circuit breakers
are marked with
their ampere rating. Do not
exceed the
specified amperage rating
when replacing fuses and
circuit breakers. Use of an
oversized fuse or circuit
breaker can result in a
vehicle fire. You and others
could be seriously injured or
killed.
{Warning
Installation or use of fuses
that do not meet GM’s
original fuse specifications is
dangerous. The fuses could
fail, and result in a fire. You (Continued)