engine CADILLAC CT6 2019 Owner's Manual

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
VEHICLE CARE 323
To check a fuse, look at the
silver-colored band inside the fuse.
If the band is broken or melted,
replace the fuse. Be sure to replace a
bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage can be
temporarily borrowed from another
fuse location, if a fuse goes out.
Replace the fuse as soon as possible.
Engine Compartment Fuse
Block
2.0L, 3.0L and 3.6L Engines
This 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.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
VEHICLE CARE 325
FusesUsage
22 Transmission auxiliary oil pump
cooling
23 –
24 Cabin heater pump
26 Engine control module ignition
27 Steering column lock ignition
28 Rear heated seats ignition
29 Front heated seats ignition
30 –
31 Headlamp/Daytime running lamps/Right
headlamp
32 –
33 –
34 –
35 Engine control module ignition –2 Fuses
Usage
36 Engine control module ignition –1
37 Coolant pump/ Ignition coils –odd
38 Ignition coils –even/
Non walk 2
39 Non walk
40 Electric brake control module1/Instrument
cluster/central
gateway module
ignition
41 –
42 Fuel tank zone module/Ignition
43 Heated steering wheel module/
Reflective light aux
display/HVAC IGN/
Automatic occupant
sensing display
44 Aeroshutter
45 Washer Fuses
Usage
46 Front short range radar sensors
47 Left cornering LED
54 –
55 –
56 –
57 –
58 –
59 –
60 Antilock brake system pump/Electric
brake control
module–1
61 Front wiper
62 Headlamp leveling
63 –
64 –
66 Transfer case control module
67 –
68 –

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
326 VEHICLE CARE
FusesUsage
69 –
70 –
71 Antilock brake system valve
72 –
73 –
Relays Usage
14 Air conditioning control
15 Starter motor
16 Starter pinion
17 Run/Crank
19 –
20 High-beam headlamp
25 Cabin heater pump
48 –
49 –
50 Engine control module
51 Wiper speed Relays
Usage
52 Wiper control
53 Headlamp control
65 –
4.2L Engine
The 4.2L engine has an underhood
fuse block on each side of the engine
compartment.
Driver Side Fuse Block
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.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
328 VEHICLE CARE
FusesUsage
display/HVAC IGN/
Automatic occupant
sensing display
F22 Electric steering column lock ignition
F23 Washer
F24 Left cornering LED
F25 –
F26 –
F27 –
F28 –
F29 Electric brake control module–1
Relays Usage
R1 –
R2 –
R3 –
R4 High-beam headlamp
R5 Wiper control
R6 Wiper speed Relays
Usage
R7 Run/Crank
R8 –
The 8-cylinder engine has an
underhood fuse block on each side of
the engine compartment.
Passenger Side Fuse Block
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.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
VEHICLE CARE 329
FusesUsage
F1 Electric brake control module–2
F2 –
F3 Headlamp/Daytime running lamps
F4 Right cornering LED
F5 – Fuses
Usage
F6 Front short range radar sensors
F7 Horn
F8 Air conditioning clutch
F9 –
F10 – Fuses
Usage
F11 Automatic headlamp leveling
F12 Starter motor
F13 Starter pinion
F14 –
F15 –
F16 –
F17 Cabin heater pump
F18 Transmission auxiliary oil pump
cooling
F19 Engine control module ignition
F20 Non walk
F21 Ignition coils –even/
Non walk –2
F22 Engine control module ignition –1
F23 Transfer case control module
F24 –
F25 Ignition coils –odd

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
330 VEHICLE CARE
FusesUsage
F26 Charge air coolant pump
F27 Engine control module ignition –2
F28 –
F29 –
Relays Usage
R1 Headlamp/Daytime running lamps
R2 Air conditioning control
R3 Starter motor
R4 Starter pinion
R5 Cabin heater pump
R6 Engine control module
R7 –
R8 –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.
To reinstall the compartment, reverse
the steps.
The vehicle may not be equipped with
all of the fuses shown.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
VEHICLE CARE 335
FusesUsage
F56 Evaporative emissions leak check
module/Rear HVAC
display
F57 Voltage current temperature module
F58 –
F59 Engine control module battery
F60 Right front motorized seat belt pretensioner
F61 –
F62 –
F63 Rear seat infotainment module
F64 Engine control module ignition
F65 Rear window sunshade
F66 Rear vision camera/ Rearview mirror Fuses
Usage
F67 Run/Crank misc/Air quality sensor/
Integrated chassis
control module/
Electronic shifter/DC
DC converter
F68 Damping control module
F69 Television tuner module
F70 –
F71 –
F72 –
F73 –
F74 –
F75 – Relays
Usage
R1 Rear seat auxiliary power outlet
R2 Spare
R3 Run/Crank

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
VEHICLE CARE 337
FusesUsage
F21 Electric brake control module - 2
F22 –
F23 Left front motorized seat belt pretensioner
F24 Body control module 7
F25 Passive entry/Passive start battery
F26 Rear closure latch
F27 Amplifier
F28 Rear defogger
F29 Park assist module
F30 Body control module 1
F31 Driver monitoring system
F32 Driver passenger door window/Mirror/
Driver seat
adjustment/Fuel door
switch Fuses
Usage
F33 Passenger/Rear seat adjustment switch
F34 Left front memory seat
F35 Right rear memory seat
F36 External heated mirror
F37 –
F38 Transmission control module
F39 Rear seat infotainment module
F40 –
F41 –
F42 –
F43 Power trunk module
F44 Right front memory seat
F45 – Fuses
Usage
F46 Right window
F47 Engine control module battery
F48 Right front subwoofer
F49 Body control module 6
F50 –
F51 –
F52 Fuel pump power module/Fuel tank
zone module
F53 Rear seat auxiliary power outlet
F54 Left rear memory seat
F55 –
F56 Rear closure release switch/Power trunk
module

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
338 VEHICLE CARE
FusesUsage
F57 Rear left and rear center short range
radar sensors/Long
range radar sensors/
Right rear external
object calculating
module
F58 Auxiliary audio/Video
F59 –
F60 Memory bolster module
F61 –
F62 Ventilated seat
F63 Universal garage door opener/Power
sounder module/Rain
sensor
F64 Passenger memory seat module
F65 Right front short range radar sensor/
Advance driver
assist map Fuses
Usage
F66 Television tuner module
F67 –
F68 –
F69 –
F70 Right front motorized seat belt pretensioner
F71 Rear heated seat module
F72 Sunroof
F73 Rear vision camera/ Rearview mirror/Air
quality sensor
F74 Rear window sunshade
F75 Engine control module ignition
F76 Misc run crank/ Energy storage
control module/DC
DC converter/Rear
external object
calculating module Fuses
Usage
F77 Trunk auxiliary power outlet
F78 Rear HVAC display
F79 –
F80 –
F81 –
F82 –
F83 –
F84 –
F85 –
F86 –
F87 –
Relays Usage
R01 Rear seat auxiliary power outlet
R02 Spare
R03 Run/Crank

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-12533370) -
2019 - crc - 1/23/19
VEHICLE CARE 343
(3) Tire Identification Number
(TIN)
:The letters and numbers
following the DOT (Department of
Transportation) code are the Tire
Identification Number (TIN). The
TIN shows the manufacturer and
plant code, tire size, and date the
tire was manufactured. The TIN is
molded onto both sides of the tire,
although only one side may have
the date of manufacture.
(4) Maximum Cold Inf lation
Load Limit
:Maximum load that
can be carried and the maximum
pressure needed to support
that load.
(5) Tire Inf lation
:The temporary
use tire or compact spare tire
should be inflated to 420 kPa
(60 psi). For more information on
tire pressure and inflation see Tire
Pressure 0346.
(6) Tire Size
:A combination of
letters and numbers define a tire's
width, height, aspect ratio,
construction type, and service description. The letter T as the
first character in the tire size
means the tire is for temporary
use only.
(7) TPC Spec (Tire Performance
Criteria Specification)
:Original
equipment tires designed to GM's
specific tire performance criteria
have a TPC specification code
molded onto the sidewall. GM's
TPC specifications meet or exceed
all federal safety guidelines.
Tire Designations
Tire Size
The following is an example of a
typical passenger vehicle tire size.
(1) Passenger (P-Metric) Tire:
The United States version of a
metric tire sizing system. The
letter P as the first character in
the tire size means a passenger
vehicle tire engineered to
standards set by the U.S. Tire and
Rim Association.
(2) Tire Width
:The three-digit
number indicates the tire section
width in millimeters from sidewall
to sidewall.
(3) Aspect Ratio
:A two-digit
number that indicates the tire
height-to-width measurements.
For example, if the tire size aspect
ratio is 60, as shown in item 3 of
the illustration, it would mean
that the tire's sidewall is
60 percent as high as it is wide.
(4) Construction Code
:A letter
code is used to indicate the type
of ply construction in the tire. The
letter R means radial ply
construction; the letter D means