2023 CADILLAC LYRIC fuses

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 3/2/22
Introduction 3
{Warning
Warning indicates a hazard
that could result in injury or
death.
Caution
Caution indicates a hazard
that could result in property
or vehicle damage.
A circle with a slash through it
is a safety symbol which
means“Do not,” “Do not do
this,” or“Do not let this
happen.”
Symbols
The vehicle has components
and labels that use symbols
instead of text. Symbols are
shown along with the text describing the operation or
information relating to a
specific component, control,
message, gauge, or indicator.
M:
Shown when the owner’s
manual has additional
instructions or information.
*: Shown when the service
manual has additional
instructions or information.
0: Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional
symbols that may be found on
the vehicle and what they
mean. See the features in this
manual for information.
u: Air Conditioning System
G:Air Conditioning
Refrigerant Oil
9: Airbag Readiness Light
!:Antilock Brake
System (ABS)
$: Brake System Warning
Light
9: Dispose of Used
Components Properly
P: Do Not Apply High
Pressure Water
[: Energy Usage and
Charge Mode Selection
_: Flame/Fire Prohibited
H: Flammable
g:First Responder
[:Forward Collision Alert
R:Fuse Block Cover Lock
Location
+: Fuses
_:High Voltage
j:ISOFIX/LATCH System
Child Restraints
Q: Keep Fuse Block Covers
Properly Installed
|: Lane Change Alert

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Instruments and Controls 103
Center Console
Rear Cargo Area
The power outlets are located:
.Inside of the center console.
.In the rear cargo area.
Lift the cover to access the
outlet and replace when not
in use.
{Warning
Power is always supplied to
the rear cargo power outlet.
Do not leave electrical
equipment plugged in when
the vehicle is not in use
because the vehicle could
catch fire and cause injury
or death.
Caution
Leaving electrical equipment
plugged in for an extended
period of time while the
vehicle is off will drain the
battery. Always unplug
electrical equipment when
not in use and do not plug in
equipment that exceeds the
maximum 15 amp rating. Certain accessory plugs may
not be compatible with the
accessory power outlet and
could overload vehicle and
adapter fuses. If a problem is
experienced, see your dealer.
When adding electrical
equipment, be sure to follow
the proper installation
instructions included with the
equipment. See Add-On
Electrical Equipment
0306.
Caution
Hanging heavy equipment
from the power outlet can
cause damage not covered
by the vehicle warranty. The
power outlets are designed
for accessory power plugs
only, such as cell phone
charge cords.

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 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)

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 327
A fuse puller is in the
underhood compartment fuse
block.The vehicle may not be
equipped with all of the fuses
and features shown. Fuses Usage
1 Spare
2 –
3 Spare
4 Spare
5 Spare
6 MSM/MBM
–
Memory Seat
Module/Memory
Bolster Module
–
7 Motor: PEEV/
PCEV & ECFV/
CHFV
–Primary
Evaporator
Expansion Valve/
Secondary
Evaporator
Expansion Valve
and External
Condenser Flow
Valve/Condensing
Heater Flow Valve

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
328 Vehicle Care
Fuses Usage8 MTR MAIN COOL
VLV & ACEC
–
Motor Main
Coolant Valve and
Air Condition
Electric
Compressor
9 Motor: PECP &
Motor: ESSCP
–
Power Electronics
Coolant Pump and
Energy Storage
System
Coolant Pump
10 –
11 –
12 ECP_S & OBCM 2
–
Electrification
Control Processor
(Traction Power
Inverter Module 2)
& On Board
Charging Module 2
13 –
14 – Fuses Usage
15 TRLR PRK LAMPS
–
Trailer Park
Lamps
–
16 TRLR REV LAMP
–
Trailer
Reverse Lamp
–
17 –
18 GLBX DR RELSE
–
Glove Box Release
19 –
20 –
21 CHARGE PORT
DR MTR
–Charge
Port Door Motor
22 AC/DC INV MDL
–
Alternate Current/
Direct Current
Inverter Module
23 –
24 –
25 – Fuses Usage
26 Spare27 –
28 ETC MDL
–
Electronic Toll
Control Module
29 –
30 Rear Cargo APO
–
Rear Cargo
Auxiliary Power
Outlet
31 TRLR INTERFACE
MDL BATT
SOURCE 1
–
Trailer Interface
Module Battery
Source 1
32 Spare
33 Spare
34 ELM 5
–Exterior
Lighting Module 5
35 ELM 4
–Exterior
Lighting Module 4
36 –

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
Vehicle Care 329
Fuses Usage37 –
38 ELM 7
–Exterior
Lighting Module 7
39 ELM 3
–Exterior
Lighting Module 3
40 ECP_E_Batt
SOURCE 1 &
ECP_E_Batt
SOURCE 3
–Elec-
trification Control
Processor
(Traction Power
Inverter Module 1)
Source 3 and 1
41 DSP & AIR
SPRINGS 2
–Door
Switch Panel and
Suspension
Control Leveling 2 Fuses Usage
42 SEAT POS SW &
VKM SNSR/RLH
SNSR
–Seat
Position Switch
and Virtual Key
Module Sensor/
Rain Light
Humidity Sensor
43 SCL & CHIM MDL
–
Steering Column
Lock and Charge
Interface Module
44 PSM & AERO SH
–
Power Sounder
Module and Aero
Shutter
45 RFA MDL & HFC
MDL
–Remote
Function Actuator
Module and
Handsfree Closure
Module Fuses Usage
46 AFL/AHL & PFA
Module
–Adaptive
Forward Lighting/
Automatic
Headlamp Leveling
and Pedestrian
Friendly Alert
Module
47 LIT GRILLE/FR
PRK EMBLEM &
SADS
–Lit Grille/
Front Park
Emblem and Semi
Active Damping
System
48 PWR T/GATE
–
Power Tailgate
49 –
50 MTR WDW
LIFTER LT
–
Motor Window
Lifter
51 AIR SPRINGS 1
–
Suspension
Control Leveling 1