
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

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
332 Vehicle Care
Fuses UsageF1 –
F2 APO/CIGAR LTR –
Auxiliary Power
Outlet Instrument
Panel/Cigar
Lighter
F3 –
F4 USB PORT/APO AC 150W –
Universal Serial
Bus Port/Auxiliary
Power Outlet
Alternating
Current 150W
F5 STRG COL LOCK –RUN/CRANK
Steering
Column Lock
F6 ELM 1– Exterior
Lighting Module 1
F7 AMP-BASE –
Amplifier-Base
F8 RT DR LATCH –
Right Door Latch Fuses Usage
F9 LT DR LATCH –
Left Door Latch
F10 STRG COL POS MDL–Steering
Column Position
Module
F11 ACP 4 –ADAS
Compute
Platform 4
F12 –
F13 EUROPE-TRLR CON & ECP_E/
ECP_S/VICM –
RUN/CRANK
Europe –Trailer
Control and Elec-
trification Control
Processor
(Traction Power
Inverter 1 and 2)/
Vehicle Integration
Control Module
F14 HEADLAMPS –
RUN/CRANK
Headlamps Fuses Usage
F15 HDLP RT –
Headlamp Right
F16 STRG COL/ CLOCK SPRING –
Steering Column
Lock/Clock Spring
F17 SEAT FAN PASS & SEAT FAN
DRVR–RUN/
CRANK Seat Fan
Passenger and
Seat Fan Driver
F18 VCD & SRR –
Virtual Cockpit
Display and Short
Range Radar

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
334 Vehicle Care
Fuses UsageF26 ECP_E_BATT 2/ ACEC & HUD/
HVAC DISPLAY –
Electrification
Control Processor
Battery 2/Air
Condition Electric
Compressor and
Heads-Up Display/
Heating,
Ventilation and Air
Conditioning
Display
F27 BCM 3 –Body
Control Module 3
F28 BCM 2 –Body
Control Module 2
F29 AMP-UPLEVEL –
Amplifier-Uplevel
F30 BCM 4 –Body
Control Module 4 Fuses Usage
F31 VPM/SD CARD/ ILSS/OHC –Video
Processing
Module/SD Card/
Indicator Light and
Solar Sensor/Over
Head Console
F32 HSWM –Heated
Steering Wheel
Module
F33 LRR FR/LIDAR –
Long Range Radar
Front/Light
Detection and
Ranging
F34 ELM 2 –Exterior
Lighting Module 2
F35 HDLP LT –
Headlamp Left
F36 VCU BATT 1 –
Virtual Cockpit
Unit Battery 1
F37 TCP (OnStar) –
Telematics
Communication
Platform Fuses Usage
F38 WCM –Wireless
Charger Module
F39 HI VOLTAGE SYS LCKOUT –High
Voltage System
Lockout
F40 VCU Batt 2 –
Virtual Cockpit
Unit Battery 2
F41 ELM 6 –Exterior
Lighting Module 6
F42 –
Wheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by a
leading tire manufacturer.
See the warranty manual
for information regarding
the tire warranty and
where to get service. For
additional information refer
to the tire manufacturer.

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
368 Vehicle Care
Caution (Continued)
used on roads for conditions
such as dust and ice. Always
wash the chrome with soap
and water after exposure.
Caution
To avoid surface damage on
wheels and wheel trim, do
not use strong soaps,
chemicals, abrasive polishes,
cleaners, or brushes. Use
only GM approved cleaners.
Do not drive the vehicle
through an automatic car
wash that uses silicon
carbide tire/wheel cleaning
brushes. Damage could
occur and the repairs would
not be covered by the
vehicle warranty.
Brake System
Visually inspect brake lines
and hoses for proper hook-up,
binding, leaks, cracks, chafing,
etc. Inspect disc brake padsfor wear and rotors for
surface condition. Inspect all
other brake parts.
Steering, Suspension, and
Chassis Components
Visually inspect steering,
suspension, and chassis
components for damaged,
loose, or missing parts or signs
of wear at least once a year.
Inspect power steering for
proper electrical connections,
binding, cracks, chafing, etc.
Visually check constant
velocity joint boots and axle
seals for leaks.
Body Component
Lubrication
Lubricate all key lock cylinders,
hood hinges, and liftgate
hinges unless the components
are plastic. Applying silicone
grease on weatherstrips with
a clean cloth will make them
last longer, seal better, and
not stick or squeak.
Underbody Maintenance
At least twice a year, spring
and fall, use plain water to
flush any corrosive materials
from the underbody. Take care
to thoroughly clean any areas
where mud and other debris
can collect.
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 fluid.
Contaminated fluid will
decrease the life of the
transfer case and/or axles and
should be replaced.
Sheet Metal Damage
If the vehicle is damaged and
requires sheet metal repair or
replacement, make sure the
body repair shop applies
anti-corrosion material to
parts repaired or replaced to
restore corrosion protection.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
378 Service and Maintenance
Some items may not apply to
your vehicle and/or region.
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Exterior Lights
.Visual inspection
Windshield and Wipers
.Visual inspection
Battery
.Battery visual inspection
.Battery test results
.Battery cables and
connections
Systems, Fluids, and
Visible Leak Inspection
.Electric Drive Unit
.Drive axle
.Transfer case
.Power electronics cooling
system
.Windshield washer fluid
Tire Inspection
.Tire pressure, tread depth,
and wear
.Rotation, if applicable
.Alignment check, optional
.Reset tire pressure monitor
.Check tire sealant expiration
date, if equipped
.Check spare tire, if equipped
Brakes
.Check brake system
Visible and Functional
Inspections
.Seat belt components
.Accelerator pedal
.Passenger compartment air
filter, if equipped
.Hoses
.Shocks and struts
.Steering components
.Axle boots or driveshaft and
u-joints
.Compartment lift struts,
if equipped
.Floor mats secured, no
interference with pedals
.Horn
.Starter switch
Lubricate
.Chassis components
Owner Checks and
Services
.At least twice a year, have
underbody flushing service
performed. See "Underbody
Maintenance" in Exterior
Care 0364.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 3/2/22
394 Customer Information
.Insurance company and
policy number
.General description of the
damage to the other vehicle
Choose a reputable repair
facility that uses quality
replacement parts. See
“Collision Parts” earlier in this
section.
In a crash, the sensing system
may shut down the high
voltage system. See Battery -
North America 0317 for
important safety information.
If an airbag has inflated, see
What Will You See after an
Airbag Inflates? 065.
If the vehicle is damaged from
a crash, flood, fire, or other
event it may be necessary to
have the vehicle inspected.
SeeBattery - North America
0 317 for important safety
information.
Managing the Vehicle
Damage Repair Process
In the event that the vehicle
requires damage repairs, GM
recommends that you take an
active role in its repair. If you
have a pre-determined repair
facility of choice, take the
vehicle there, or have it towed
there. Specify to the facility
that any required replacement
collision parts be original
equipment parts, either new
Genuine GM parts or recycled
original GM parts. Remember,
recycled parts will not be
covered by the GM vehicle
warranty.
Insurance pays the bill for the
repair, but you must live with
the repair. Depending on your
policy limits, your insurance
company may initially value the
repair using aftermarket parts.
Discuss this with the repair
professional, and insist on
Genuine GM parts. Remember,
if the vehicle is leased, you
may be obligated to have the vehicle repaired with Genuine
GM parts, even if your
insurance coverage does not
pay the full cost.
If another party's insurance
company is paying for the
repairs, you are not obligated
to accept a repair valuation
based on that insurance
company's collision policy
repair limits, as you have no
contractual limits with that
company. In such cases, you
can have control of the repair
and parts choices as long as
the cost stays within
reasonable limits.
Publication Ordering
Information
Service Manuals
Service manuals have the
diagnosis and repair
information on the engine/
propulsion, transmission, axle,
suspension, brakes, electrical
system, steering system,
body, etc.

Cadillac Lyriq Owner Manual (GMNA-Localizing-U.S./Canada-15644413) -
2023 - CRC - 2/23/22
INDEX 411
Alert (cont'd)Side Blind
Zone (SBZA) . . . . . . . . . . . . . . . . 277
All-Season Tires . . . . . . . . . . . . . 335
All-Wheel Drive . . . . . . . . . . . . . . . . 215
AM-FM Radio . . . . . . . . . . . . . . . . . . 156
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . 160
Antilock Brake System (ABS) . . . . . . . . . . . . . . . . 216
Warning Light . . . . . . . . . . . . . . . . 117
Appearance Care
Exterior . . . . . . . . . . . . . . . . . . . . . . . 364
Interior . . . . . . . . . . . . . . . . . . . . . . . . 369
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . . 174
Assistance Systems Driving . . . . . . . . . . . . . . . . . . . . . . . . 270
Parking and Backing . . . . . . . 257
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . 161
Automatic Door Locks . . . . . . . . . . . . . . . . . . . . . 19
EmergencyBraking (AEB) . . . . . . . . . . . . . . 273
Emergency Braking
(AEB) Disabled Light . . . . . 118
Headlamp System . . . . . . . . . . 143 Automatic (cont'd)
Parking Assist (APA) . . . . . 262
Vehicle Hold Light . . . . . . . . . . . 117
Automatic Vehicle Hold (AVH) . . . . . . . . . . . . . . . . . . . . 219
Avoiding Untrusted Media Devices . . . . . . . . . . . . . . . 160
B
Battery
Charging ElectricalRequirements . . . . . . . . . . . . . 295
Exterior Lighting Battery Saver . . . . . . . . . . . . . . 149
Fault Light . . . . . . . . . . . . . . . . . . . . 115
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Load Management . . . . . . . . . 148
Power Protection . . . . . . . . . . 149
Battery - North America . . . . . . . . . . . . . . . . . 317, 356
Blade Replacement, Wiper . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Blind Zone SteeringAssist (BZSA) . . . . . . . . . . . . . . 279
Bluetooth
Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
Overview . . . . . . . . . . . . . . . . 168, 170 Brake
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . 316
System Warning Light . . . . 115
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . 315 Antilock . . . . . . . . . . . . . . . . . . . . . . . . 216
Brake Assist . . . . . . . . . . . . . . . . . 218
Electric Brake Boost . . . . . . 216
Electric Parking Brake . . . . 217
Regenerative Braking . . . . 220
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . 196 Automatic
Emergency (AEB) . . . . . . . . . 273
Reverse Automatic . . . . . . . . 267
Braking System FrontPedestrian (FPB) . . . . . . . . . . 274
Break-In, New Vehicle . . . . . . 206
Buckle To Drive . . . . . . . . . . . . . . . . . 51
Bulb Replacement . . . . . . . . . . . 323 Headlamp Aiming . . . . . . . . . . 322
Buying New Tires . . . . . . . . . . . . 350
C
Calibration
Compass . . . . . . . . . . . . . . . . . . . . . . 102