2018 CADILLAC CT6 relay

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/15/17
332 VEHICLE CARE
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
The underhood 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-11292458) -
2018 - crc - 2/15/17
VEHICLE CARE 333
FusesUsage
1 – Fuses
Usage
2 Power coolant pump
3 – Fuses
Usage
4 Traction power inverter 1
5 Transmission/ Ignition
6 –
7 Starter 2
8 Starter 1
9 Horn
10 –
11 Right LED
12 Left LED
13 High-beam headlamps
14 Air conditioning control relay
15 Starter 2 relay
16 Starter 1 relay
17 Run/Crank relay
18 Right cornering LED
19 Low-beam headlamp relay

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/15/17
334 VEHICLE CARE
FusesUsage
20 High-beam headlamp relay
21 Air conditioning clutch
22 –
23 Coolant heater control module
24 Coolant pump
25 Coolant pump relay
26 Hi fuel
27 Steering column lock
28 Rear heated seats
29 Front heated seats
30 –
31 LED lighting battery
32 Air conditioning control module
33 AIR solenoid
34 –
35 Engine control module Fuses
Usage
36 Engine control module 2
37 Coolant pump/ Ignition coils–odd
38 Ignition coils–even/ Non walk 2
39 Non walk
40 Instrument cluster
41 –
42 Fuel pump power module
43 Instrument panel body/Ignition
44 Aeroshutter
45 Washer
46 Front sensor
47 Left cornering LED
48 AIR solenoid relay
49 Air pump relay
50 Engine control module relay
51 Wiper speed relay Fuses
Usage
52 Wiper control relay
53 Headlamp control relay
54 –
55 –
56 Air pump
57 –
58 Instrument panel electronic center
59 –
60 Anitlock brake system pump
61 Front wiper
62 Headlamp leveling
63 Electric brake booster module
64 –
65 –
66 Transfer case control module
67 Electric brake booster

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/15/17
VEHICLE CARE 335
FusesUsage
68 Rear seat entertainment
display
69 Rechargeable energy storage system
coolant pump
70 –
71 Anitlock brake system valve
72 –
73 –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 and relays shown.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/15/17
VEHICLE CARE 337
FusesUsage
F26 Steering wheel controls
F27 USB charge port
F28 Wireless charger
F29 –
F30 SpeakerRear Compartment Fuse
Block
The rear compartment fuse block is
behind a cover on the passenger side
of the rear compartment.
The vehicle may not be equipped with
all of the fuses, relays, and features
shown.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/15/17
340 VEHICLE CARE
FusesUsage
F70 –
F71 –
F72 –
F73 –
F74 –
F75 –
Relays Usage
R1 Rear seat power outlet
R2 Fuel pump
R3 Run/CrankWheels 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.
{Warning
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much flexing.
There could be a blowout
and a serious crash. See
Vehicle Load Limits 0213.
(Continued)
Warning (Continued)
.Underinflated tires pose
the same danger as
overloaded tires. The
resulting crash could cause
serious injury. Check all
tires frequently to
maintain the
recommended pressure.
Tire pressure should be
checked when the tires
are cold.
.Overinflated tires are more
likely to be cut, punctured,
or broken by a sudden
impact —such as when
hitting a pothole. Keep
tires at the recommended
pressure.
.Worn or old tires can
cause a crash. If the tread
is badly worn,
replace them.
(Continued)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-11292458) -
2018 - crc - 2/14/17
422 ONSTAR
PressQto connect to an Advisor to:
. Verify account information or
update contact information.
. Get driving directions.
. Receive a Diagnostic check of the
vehicle's key operating systems.
. Receive Roadside Assistance.
. Manage Wi-Fi Settings,
if equipped.
Press
>to get a priority connection
to an OnStar Advisor available 24/7 to:
. Get help for an emergency.
. Be a Good Samaritan or respond
to an AMBER Alert.
. Get assistance in severe weather
or other crisis situations and find
evacuation routes.
OnStar Services
Emergency
Emergency Services require an active,
OnStar service plan (excludes Basic
Plan). With Automatic Crash
Response, built-in sensors can
automatically alert a specially trained
OnStar Advisor who is immediately
connected in to the vehicle to help.
Press
>for a priority connection to
an OnStar Advisor who can contact
emergency service providers, direct
them to your exact location, and relay
important information.
With OnStar Crisis Assist, specially
trained Advisors are available
24 hours a day, 7 days a week, to
provide a central point of contact,
assistance, and information during a
crisis.
With Roadside Assistance, Advisors
can locate a nearby service provider to
help with a flat tire, a battery jump,
or an empty gas tank.
Security
If equipped, OnStar provides these
services:
. With Stolen Vehicle Assistance,
OnStar Advisors can use GPS to
pinpoint the vehicle and help
authorities quickly recover it.
. With Remote Ignition Block,
if equipped, OnStar can block the
engine from being restarted.
. With Stolen Vehicle Slowdown,
if equipped, OnStar can work with
law enforcement to gradually slow
the vehicle down.
Theft Alarm Notification
If equipped, if the doors are locked
and the vehicle alarm sounds, a
notification by text, e-mail, or phone
call will be sent. If the vehicle is
stolen, an OnStar Advisor can work
with authorities to recover the vehicle.