2022 CADILLAC CT4 fuse

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
354 VEHICLE CARE
Replacing a Blown Fuse
1. Turn off the ignition.
2. Locate the fuse puller in the enginecompartment fuse block.
3. Use the fuse puller to remove thefuse from the top or side, as shown
above.
4. If the fuse must be replaced immediately, 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.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
VEHICLE CARE 355
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. Wiper function is
available immediately after the wiper
switch is set to off, and back to on.
To protect the wiper motor from
overheating, the wipers may slow
down when the windshield is dry for a
long period of time. If a period of dry
operation, or little moisture, exceeds
10 minutes, the wipers may switch to
intermittent operation, and remain
there. When moisture is again
detected on the windshield, wiper
operation will return to the operator
selected speed.
Although the circuit is protected from
electrical overload, overload due to
heavy snow or ice may cause wiperlinkage 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 or others could be injured or
killed, and the vehicle could be
damaged.
See Accessories and Modifications
0 323 and
General Information 0323.
To check or replace a blown fuse, see
Electrical System Overload 0353.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
356 VEHICLE CARE
Engine Compartment Fuse
Block
The engine compartment fuse block is
on the driver side of the engine
compartment.
Lift the fuse block cover to access the
fuses.
The vehicle may not be equipped with
all of the fuses and relays shown.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the covers
on any electrical component.
FusesUsage
1 Long Range Radar Front Sensor
2 Park/Daytime Running Lamps
3 Exterior Lighting Module 4
4 Exterior Lighting Module 7
5 Headlamp Level Fuses
Usage
6 –
7 Electronic Brake Control Module
8 Washer Pump
9 –
10 –
11 –
12 Horn

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
VEHICLE CARE 357
FusesUsage
13 Front Wiper
14 Exterior Lighting Module 6
15 Exterior Lighting Module 1
16 Exterior Lighting Module 5
17 Exterior Lighting Module 3
18 Aero Shutter
19 –
20 –
21 Virtual Key System/ Power Sounder
Module
22 Engine Control Module Battery
23 Transmission Control Module
24 Active Engine Mount
25 –
26 Engine Control Module Fuses
Usage
27 Injectors/Ignition 2
28 Charged Air Cooler
29 Transmission Aux Oil Pump/Transmission
Reverse Lock Out
30 Injectors/Ignition 1
31 Emissions 1
32 Emissions 2
33 Starter Solenoid
34 –
35 –
36 Starter Pinion
37 AC Clutch
38 –
39 –
40 –
41 –
42 Water Pump
43 –
44 – Relays
Usage
47 –
48 Front Wiper Speed
49 Front Wiper Control
51 –
52 Engine Control Module
53 Starter Solenoid
54 Starter Pinion
55 –
57 AC Clutch
58 –

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
358 VEHICLE CARE
Instrument Panel Fuse
Block
The instrument panel fuse block is in
the end of the driver side of the
instrument panel.
To access the fuses, remove the end
panel by gently prying with a plastic
tool near each clip, beginning at the
point shown.
To install the end cover, insert the
tabs on the back of the cover into the
slots in the instrument panel at the
points shown. Align the clips with the
slots in the instrument panel, and
press the cover into place.
The vehicle may not be equipped with
all of the fuses and relays shown.

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
VEHICLE CARE 359
FusesUsage
1 –
2 Heating, Ventilation, and Air Conditioning
Blower
3 –
4 – Fuses
Usage
5 Theft Deterrent/ Universal Garage
Door Opener/
Overhead Console/
Rain Sensor
6 –
7 Air Quality Ionizer
8 Heated Steering Wheel Fuses
Usage
9 –
10 Electronic Steering Column Lock 1
11 –
12 –
13 –
14 –
15 –
16 –
17 –
18 Display/Infotainment/ USB/Multi-function
Control Module
19 Sensing and Diagnostic Module/
Automatic Occupant
Sensing/Data Link
Connection/Wireless
Charging Module/
Virtual Key Module
20 Power Steering Column Module/
Electronic Steering
Column Lock 2

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
360 VEHICLE CARE
FusesUsage
21 Driver Monitor System/Performance
Data Recorder
22 –
23 –
24 –
25 USB
26 –
27 –
28 –
29 –
30 –
31 Headlamp Level
32 –
33 Body Ignition/IP Ignition
34 Exhaust Valve Fuses
Usage
35 Transmission Control Module Ignition/
Engine Control
Module Ignition/Shift
Ignition/Brake
Ignition
36 Shift Module
37 Body Control Module 1/Electronic
Park Brake Switch
38 Center Stack Module
39 Steering Wheel Controls
40 Body Control Module 2
41 Body Control Module 3
42 Body Control Module 4 Circuit
Breakers Usage
CB1 Auxiliary Power Outlet 1
CB2 Auxiliary Power Outlet 2
Relays Usage
1 Run After Park/ Accessory
2 Run Crank
3 –
4 –
5 –

Cadillac CT4 Owner Manual (GMNA-Localizing-U.S./Canada-15283641) -
2022 - CRC - 10/12/21
VEHICLE CARE 361
Rear Compartment Fuse
Block
The rear compartment fuse block is
behind a cover on the driver side of
the rear compartment.
The vehicle may not be equipped with
all of the fuses, relays, and features
shown.
FusesUsage
1 Remote Function Actuator
2 –
3 Driver Heated Seat
4 Fuel Tank Zone Module
5 –
6 –
7 –
8 –
9 –
10 Motor Seat Belt Passenger
11 Canister Vent Solenoid
12 Sunroof
13 –
14 –
15 Passenger Heated Seat
16 –