Fuse Box Diagrams Cadillac CT6 (2019-2020)

In this article, you will find information about the fuses of the Cadillac CT6 (models 2019 and 2020), including diagrams of the fuse boxes, a list of fuses and relays, their designation, and the location of the fuse blocks within the vehicle.

Cadillac CT6 (2019-2020)

Checking and Replacing Fuses in Cadillac CT6

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 power devices in the vehicle. To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse Replace a bad fuse with a new one of the identical size and rating.

Caution!

Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers.

Location of Fuse Boxes

Engine Compartment Fuse Block (2.0L, 3.0L and 3.6L):
This fuse block is on the driver side of the engine compartment. Lift the fuse block cover to access the fuses.
Cadillac CT6 (2019-2020): Engine compartment fuse box location

Engine Compartment Fuse Block (4.2L):
The 4.2L engine has an underhood fuse block on each side of the engine compartment. Lift the fuse block cover to access the fuses.
Cadillac CT6 (2019-2020): Engine compartment fuse box location

Instrument Panel Fuse Block:
The instrument panel fuse block is behind the driver side instrument panel storage compartment. The storage compartment has a press to open latch. To access the fuses, open the compartment by pressing and releasing near the top center square. Apply pressure to the two retaining tabs on the sides of the compartment, until the two retaining tabs clear the sides of the instrument panel. Allow the compartment to move downward, and out of the way.
Cadillac CT6 (2019-2020): Instrument panel fuse box location

Rear Compartment Fuse Block:
The rear compartment fuse block is behind a cover on the passenger side.
Cadillac CT6 (2019-2020): Rear compartment fuse box location

  • 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.
  • If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop. Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage.

Fuse Box Diagrams

2019

Engine Compartment Fuse Block (2.0L, 3.0L and 3.6L)

Cadillac CT6 (2019): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2019)
Usage
1-
2-
3-
4-
5Transfer case control / Transmission control module ignition
6-
7Starter motor
8Starter pinion
9Horn
10-
11-
12-
13High-beam headlamps left/right
18Right cornering LED
21Air conditioning clutch
22Transmission auxiliary oil pump cooling
23-
24Cabin heater pump
26Engine control module ignition
27Steering column lock ignition
28Rear heated seats ignition
29Front heated seats ignition
30-
31Headlamp / Daytime running lamps / Right headlamp
32-
33-
34-
35Engine control module ignition - 2
36Engine control module ignition - 1
37Coolant pump / Ignition coils - odd
38Ignition coils - even / Non walk 2
39Non walk
40Electric brake control module 1 / Instrument cluster / central gateway module ignition
41-
42Fuel tank zone module / Ignition
43Heated steering wheel module / Reflective light aux display / HVAC IGN / Automatic occupant sensing display
44Aeroshutter
45Washer
46Front short range radar sensors
47Left cornering LED
54-
55-
56-
57-
58-
59-
60Antilock brake system pump/Electric brake control module - 1
61Front wiper
62Headlamp leveling
63-
64-
66Transfer case control module
67-
68-
69-
70-
71Antilock brake system valve
72-
73-
Relays
14Air conditioning control
15Starter motor
16Starter pinion
17Run/Crank
19-
20High-beam headlamp
25Cabin heater pump
48-
49-
50Engine control module
51Wiper speed
52Wiper control
53Headlamp control
65-
Engine Compartment Fuse Block (4.2L)

Cadillac CT6 (2019): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block №1 (2019)
Usage
F1-
F2-
F4-
F4-
F5High-beam headlamps left/right
F6-
F7Front wiper
F8-
F9Instrument cluster / Electric brake control module 1 / Central gateway module ignition
F10-
F11Transmission control / Transfer case control module ignition
F12-
F13Front heated seats ignition
F14Exhaust valve solenoid
F15Rear heated seats ignition
F16Fuel tank zone module ignition
F17-
F18-
F19-
F20-
F21Heated steering wheel module / Reflective light aux display / HVAC IGN / Automatic occupant sensing display
F22Electric steering column lock ignition
F23Washer
F24Left cornering LED
F25-
F26-
F27-
F28-
F29Electric brake control module - 1
Relays
R1-
R2-
R3-
R4High-beam headlamp
R5Wiper control
R6Wiper speed
R7Run/Crank
R8-

Cadillac CT6 (2019): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block №2 (2019)
Usage
F1Electric brake control module - 2
F2-
F3Headlamp / Daytime running lamps
F4Right cornering LED
F5-
F6Front short range radar sensors
F7Horn
F8Air conditioning clutch
F9-
F10-
F11Automatic headlamp leveling
F12Starter motor
F13Starter pinion
F14-
F15-
F16-
F17Cabin heater pump
F18Transmission auxiliary oil pump cooling
F19Engine control module ignition
F20Non walk
F21Ignition coils - even / Non walk - 2
F22Engine control module ignition - 1
F23Transfer case control module
F24-
F25Ignition coils - odd
F26Charge air coolant pump
F27Engine control module ignition - 2
F28-
F29-
Relays
R1Headlamp / Daytime running lamps
R2Air conditioning control
R3Starter motor
R4Starter pinion
R5Cabin heater pump
R6Engine control module
R7-
R8-
Instrument Panel Fuse Block

Cadillac CT6 (2019): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2019)
Usage
F1Auxiliary power outlet front console
F2Visor
F3Front blower
F4Body control module 8
F5Power steering column
F6Electric steering column lock
F7Glove box door
F8Front heated seat module
F9Sensing and diagnostic module
F10Body control module 4
F11Body control module 3
F12Data link connector
F13-
F14Electronic shifter
F15Front camera
F16Display
F17Heating, ventilation, and air conditioning control
F18OnStar
F19-
F20-
F21Traction power inverter 2
F22-
F23Central gateway module
F24Center stack module / Infotainment
F25Video processing module night vision
F26Steering wheel controls
F27USB charge port
F28Wireless charger
F29-
F30Speaker
Rear Compartment Fuse Block

Cadillac CT6 (2019): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (With Super Cruise) (2019).
Usage
F01-
F02Body control module 2 and 4
F03Left rear external object calculating module
F04Steering wheel display / Touch sensor
F05-
F06-
F07Left front and right rear short range radar sensor / Camera image processing module
F08Driver memory seat module
F09Column friction device
F10Left headlamp
FI 1-
F12-
F13Left front subwoofer
F14Rear blower
F15Left window
F16Canister vent
F17Rear seat memory / Heated
F18Rear subwoofer
F19Damping control module
F20-
F21Electric brake control module - 2
F22-
F23Left front motorized seat belt pretensioner
F24Body control module 7
F25Passive entry / Passive start battery
F26Rear closure latch
F27Amplifier
F28Rear defogger
F29Park assist module
F30Body control module 1
F31Driver monitoring system
F32Driver passenger door window / Mirror / Driver seat adjustment / Fuel door switch
F33Passenger / Rear seat adjustment switch
F34Left front memory seat
F35Right rear memory seat
F36External heated mirror
F37-
F38Transmission control module
F39Rear seat infotainment module
F40-
F41-
F42-
F43Power trunk module
F44Right front memory seat
F45-
F46Right window
F47Engine control module battery
F48Right front subwoofer
F49Body control module 6
F50-
F51-
F52Fuel pump power module / Fuel tank zone module
F53Rear seat auxiliary power outlet
F54Left rear memory seat
F55-
F56Rear closure release switch / Power trunk module
F57Rear left and rear center short range radar sensors / Long range radar sensors / Right rear external object calculating module
F58Auxiliary audio/Video
F59-
F60Memory bolster module
F61-
F62Ventilated seat
F63Universal garage door opener / Power sounder module / Rain sensor
F64Passenger memory seat module
F65Right front short range radar sensor / Advance driver assist map
F66Television tuner module
F67-
F68-
F69-
F70Right front motorized seat belt pretensioner
F71Rear heated seat module
F72Sunroof
F73Rear vision camera / Rearview mirror / Air quality sensor
F74Rear window sunshade
F75Engine control module ignition
F76Misc run crank / Energy storage control module / DC DC converter / Rear external object calculating module
F77Trunk auxiliary power outlet
F78Rear HVAC display
F79-
F80-
F81-
F82-
F83-
F84-
F85-
F86-
F87-
Relays
R01Rear seat auxiliary power outlet
R02Spare
R03Run/Crank

Cadillac CT6 (2019): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (Without Super Cruise) (2019)
Usage
F01-
F02Auxiliary trunk power outlet
F03Left window
F04-
F05Canister vent
F06Right rear memory seat
F07Body control module 7
F08Passenger / Rear seat adjustment switch
F09Passive entry / Passive start battery
F10Rear subwoofer
F11Left front memory seat module
F12-
F13-
F14Rear seat memory / Heated
F15Left front subwoofer
F16Right front memory seat
F17Rear heated seat
F18Regulated voltage control battery
F19Driver passenger door window / Mirror / Driver seat adjustment / Fuel door switch
F20Electric brake control module - 2
F21Vehicle integration control module
F22-
F23Rear closure latch
F24-
F25Left front motorized seat belt pretensioner
F26Rear defogger
F27Right front subwoofer
F28Amplifier
F29Sunroof
F30Body control module 2
F31Body control module 6
F32Exterior heated mirrors
F33Right window
F34Power trunk module
F35On-board charging module
F36Pedestrian friendly alert function
F37-
F38Rear blower
F39Fuel pump power module / Fuel tank zone module
F40-
F41Rear seat auxiliary power outlet
F42Left rear memory seat
F43-
F44Rear closure release switch / Power trunk module / Integrated chassis control module battery
F45Auxiliary audio/Video
F46External object calculating module / Side blind zone alert / Rear center short range radar sensor / Long range radar sensors
F47-
F48-
F49Memory bolster module
F50Body control module 1
F51Transmission control module
F52Park assist
F53Ventilated seats
F54Universal garage door opener / Power sounder module / Rain sensor
F55Front memory seat module
F56Evaporative emissions leak check module / Rear HVAC display
F57Voltage current temperature module
F58-
F59Engine control module battery
F60Right front motorized seat belt pretensioner
F61-
F62-
F63Rear seat infotainment module
F64Engine control module ignition
F65Rear window sunshade
F66Rear vision camera / Rearview mirror
F67Run/Crank misc / Air quality sensor / Integrated chassis control module / Electronic shifter / DC DC converter
F68Damping control module
F69Television tuner module
F70-
F71-
F72-
F73-
F74-
F75-
Relays
R1Rear seat auxiliary power outlet
R2Spare
R3Run/Crank

2020

Engine Compartment Fuse Block (2.0L, 3.0L and 3.6L)

Cadillac CT6 (2020): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block (2020)
Usage
1-
2-
3-
4-
5Transfer case control / Transmission control module ignition
6-
7Starter motor
8Starter pinion
9Horn
10-
11-
12-
13High-beam headlamps left/right
18Right cornering LED
21Air conditioning clutch
22Transmission auxiliary oil pump cooling
23-
24Cabin heater pump
26Engine control module ignition
27Steering column lock ignition
28Rear heated seats ignition
29Front heated seats ignition
30-
31Headlamp/Daytime running lamps / Right headlamp
32-
33-
34-
35Engine control module ignition - 2
36Engine control module ignition - 1
37Coolant pump/ Ignition coils - odd
38Ignition coils - even/ Non walk 2
39Non walk
40Electric brake control module 1 / Instrument cluster / central gateway module ignition
41-
42Fuel tank zone module /Ignition
43Heated steering wheel module / Reflective light aux display / HVAC IGN / Automatic occupant sensing display
44Aeroshutter
45Washer
46Front short range radar sensors
47Left cornering LED
54-
55-
56-
57-
58-
59-
60Antilock brake system pump / Electric brake control module - 1
61Front wiper
62Headlamp leveling
63-
64-
66Transfer case control module
67-
68-
69-
70-
71Antilock brake system valve
72-
73-
Relays
14Air conditioning control
15Starter motor
16Starter pinion
17Run/Crank
19-
20High-beam headlamp
25Cabin heater pump
48-
49-
50Engine control module
51Wiper speed
52Wiper control
53Headlamp control
65-
Engine Compartment Fuse Block (4.2L)

Cadillac CT6 (2020): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block №1 (2020)
Usage
F1-
F2-
F3-
F4-
F5High-beam headlamps left/right
F6-
F7Front wiper
F8-
F9Instrument cluster / Electric brake control module 1 / Central gateway module ignition
F10-
F11Transmission control / Transfer case control module ignition
F12-
F13Front heated seats ignition
F14Exhaust valve solenoid
F15Rear heated seats ignition
F16Fuel tank zone module ignition
F17-
F18-
F19-
F20-
F21Heated steering wheel module / Reflective light aux display / HVAC IGN / Automatic occupant sensing display
F22Electric steering column lock ignition
F23Washer
F24Left cornering LED
F25-
F26-
F27-
F28-
F29Electric brake control module - 1
Relays
R1-
R2-
R3-
R4High-beam headlamp
R5Wiper control
R6Wiper speed
R7Run/Crank
R8-

Cadillac CT6 (2020): Engine compartment fuse box diagram

List of fuses in the Engine Compartment Fuse Block №2 (2020)
Usage
F1Electric brake control module - 2
F2-
F3Headlamp / Daytime running lamps
F4Right cornering LED
F5-
F6Front short range radar sensors
F7Horn
F8Air conditioning clutch
F9-
F10-
F11Automatic headlamp leveling
F12Starter motor
F13Starter pinion
F14-
F15-
F16-
F17Cabin heater pump
F18Transmission auxiliary oil pump cooling
F19Engine control module ignition
F20Non walk
F21Ignition coils - even / Non walk - 2
F22Engine control module ignition - 1
F23Transfer case control module
F24-
F25Ignition coils - odd
F26Charge air coolant pump
F27Engine control module ignition - 2
F28-
F29-
Relays
R1Headlamp / Daytime running lamps
R2Air conditioning control
R3Starter motor
R4Starter pinion
R5Cabin heater pump
R6Engine control module
R7-
R8-
Instrument Panel Fuse Block

Cadillac CT6 (2020): Instrument panel fuse box diagram

List of fuses in the Instrument Panel Fuse Block (2020)
Usage
F1Auxiliary power outlet front console
F2Visor
F3Front blower
F4Body control module 8
F5Steering column switch module
F6Electric steering column lock
F7Glove box door
F8Front heated seat module
F9Sensing and diagnostic module
F10Body control module 4
F11Body control module 3
F12Data link connector
F13-
F14Electronic shifter
F15Front camera
F16Display
F17Heating, ventilation, and air conditioning control
F18OnStar
F19-
F20-
F21-
F22-
F23Central gateway module
F24Center stack module / Infotainment
F25Video processing module night vision
F26Steering wheel controls
F27USB charge port
F28Wireless charger
F29-
F30Speaker
Rear Compartment Fuse Block

Cadillac CT6 (2020): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (With Super Cruise) (2020)
Usage
F01-
F02Body control module 2 and 4
F03Left rear external object calculating module
F04Steering wheel display / Touch sensor
F05-
F06-
F07Left front and right rear short range radar sensor / Camera image processing module
F08Driver memory seat module
F09Column friction device
F10Left headlamp
F11-
F12-
F13Left front subwoofer
F14Rear blower
F15Left window
F16Canister vent
F17Rear seat memory / Heated
F18Rear subwoofer
F19Damping control module
F20-
F21Electric brake control module - 2
F22-
F23Left front motorized seat belt pretensioner
F24Body control module 7
F25Passive entry / Passive start battery
F26Rear closure latch
F27Amplifier
F28Rear Defogger
F29Park assist module
F30Body control module 1
F31Driver monitoring system
F32Driver passenger door window / Mirror / Driver seat adjustment / Fuel door switch
F33Passenger / Rear seat adjustment switch
F34Left front memory seat
F35Right rear memory seat
F36External heated mirror
F37-
F38Transmission control module
F39Rear seat infotainment module
F40-
F41-
F42-
F43Power trunk module
F44Right front memory seat
F45-
F46Right window
F47Engine control module battery
F48Right front subwoofer
F49Body control module 6
F50-
F51-
F52Fuel tank zone module
F53Rear seat auxiliary power outlet
F54Left rear memory seat
F55-
F56Rear closure release switch / Power trunk module
F57Rear left and rear center short range radar sensors / Long range radar sensors / Right rear external object calculating module
F58Auxiliary audio/Video
F59-
F60Memory bolster module
F61-
F62Ventilated seat
F63Universal garage door opener / Power sounder module / Rain sensor
F64Passenger memory seat module
F65Right front short range radar sensor / Advance driver assist map
F66Television tuner module
F67-
F68-
F69-
F70Right front motorized seat belt pretensioner
F71Rear heated seat module
F72Sunroof
F73Rear vision camera / Inside Rearview mirror / Air quality sensor
F74Rear window sunshade
F75Engine control module ignition
F76Misc run crank / Energy storage control module / DC DC converter / Rear external object calculating module / Shifter interface board module
F77Trunk auxiliary power outlet
F78Rear HVAC display
F79-
F80-
F81-
F82-
F83-
F84-
F85-
F86-
F87-
Relays
R01Rear seat auxiliary power outlet
R02Spare
R03Run/Crank

Cadillac CT6 (2020): Rear compartment fuse box diagram

List of fuses in the Rear Compartment Fuse Block (Without Super Cruise) (2020)
Usage
F01-
F02Auxiliary trunk power outlet
F03Left window
F04-
F05Canister vent
F06Right rear memory seat
F07Body control module 7
F08Passenger / Rear seat adjustment switch
F09Passive entry / Passive start battery
F10Rear subwoofer
FI 1Left front memory seat module
F12-
F13-
F14Rear seat memory / Heated
F15Left front subwoofer
F16Right front memory seat
F17Rear heated seat
F18-
F19Driver passenger door window / Mirror / Driver seat adjustment / Fuel door switch
F20Electric brake control module - 2
F21-
F22-
F23Rear closure latch
F24-
F25Left front motorized seat belt pretensioner
F26Rear Defogger
F27Right front subwoofer
F28Amplifier
F29Sunroof
F30Body control module 2
F31Body control module 6
F32Exterior heated mirrors
F33Right window
F34Power trunk module
F35-
F36-
F37-
F38Rear blower
F39Fuel tank zone module
F40-
F41Rear seat auxiliary power outlet
F42Left rear memory seat
F43-
F44Rear closure release switch / Power trunk module / Integrated chassis control module battery
F45Auxiliary audio/Video
F46External object calculating module / Side blind zone alert / Rear center short range radar sensor / Long range radar sensors
F47-
F48-
F49Memory bolster module
F50Body control module 1
F51Transmission control module
F52Park assist
F53Ventilated seats
F54Headliner / Universal garage door opener / Power sounder module / Rain sensor
F55Front memory seat module
F56Rear HVAC Display
F57-
F58-
F59Engine control module battery
F60Right front motorized seat belt pretensioner
F61-
F62-
F63Rear seat infotainment module
F64Engine control module ignition
F65Rear window sunshade
F66Rear vision camera/ Inside Rearview mirror
F67Run/Crank misc / Air quality sensor / Integrated chassis control module / Electronic shifter / DC DC converter
F68Damping control module
F69Television tuner module
F70-
F71-
F72-
F73-
F74-
F75-
Relays
R1Rear seat auxiliary power outlet
R2Spare
R3Run/Crank