2016 CADILLAC CT6 transmission

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 285Transfer Case When to Check Lubricant
It is not necessary to regularly
check the transfer case fluid unless
a leak is suspected or an unusual
noise is heard. A fluid loss could
indicate a problem. Have it
inspected and repaired.
How to Check Lubricant
1. Fill Plug
2. Drain Plug
To get an accurate reading, the
vehicle should be on a level
surface. If the level is below the bottom of
the fill plug hole on the transfer
case, some lubricant will need to be
added. Add enough lubricant to
raise the level to the bottom of the
fill plug hole. Use care not to
overtighten the fill plug.
What to Use
To determine what kind of lubricant
to use, see Recommended Fluids
and Lubricants 0 353 .
Starter Switch Check
{ WarningWhen you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be
sure there is enough room
around the vehicle.
2. Firmly apply both the parking
brake and the regular brake.
Do not use the accelerator pedal, and be ready to turn off
the engine immediately if it
starts.
3. Try to start the engine in each
gear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
Automatic Transmission
Shift Lock Control
Function Check
{ WarningWhen you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be
sure there is enough room
around the vehicle. It should be
parked on a level surface.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
286 Vehicle Care 2. Firmly apply the parking brake.
See Electric Parking
Brake 0 214 .
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the engine off, turn the
ignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with
normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.
Park Brake and P (Park)
Mechanism Check
{ Warning
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
(Continued) Warning (Continued) roll. Be ready to apply the regular
brake at once should the vehicle
begin to move.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the parking brake.
.
To check the parking brake's
holding ability: With the engine
running and the transmission in
N (Neutral), slowly remove foot
pressure from the regular brake
pedal. Do this until the vehicle is
held by the parking brake only.
.
To check the P (Park)
mechanism's holding ability:
With the engine running, shift to
P (Park). Then release the
parking brake followed by the
regular brake.
Contact your dealer if service is
required. Wiper Blade Replacement Windshield wiper blades should be
inspected for wear or cracking.
For the proper type and size, see
Maintenance Replacement
Parts 0 354 .
To replace the wiper blade
assembly:
1. Pull the windshield wiper
assembly away from the
windshield.
2. Lift up on the latch in the
middle of the wiper blade
where the wiper arm attaches.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 291
Number Usage
1 Traction power
inverter 2 Number Usage
2 Power
coolant pump Number Usage
3 –
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 Left and right
high-beam
headlamps
14 A/C control relay
15 Starter 2 relay
16 Starter 1 relay
17 Run/Crank relay
18 Right cornering LED
19 Headlamp
low-beam relay

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 297Fuse Usage
F09 Passive entry/
Passive start
F10 Rear subwoofer am-
plifier
F11 Driver memory seat
module
F12 –
F13 –
F14 Right rear seat
F15 Left front amplifier
F16 Right front seat
F17 Rear heated seat
F18 Battery/Regulated
voltage control
F19 Door mirror switch
F20 –
F21 Vehicle integration
control module
F22 –
F23 Rear closure
F24 – Fuse Usage
F25 Left motorized
safety belt
pretensioner
F26 Rear defogger
F27 Right front amplifier
F28 Amplifier
F29 Sunroof
F30 Body control
module 2
F31 Body control
module 6
F32 Exterior rearview
mirror
F33 Right window
F34 Power trunk module
F35 On-board charging
module
F36 Alarm siren module
F37 DC AC inverter
F38 Rear blower
F39 Fuel pump power
F40 – Fuse Usage
F41 Rear seat power
outlet
F42 Left rear
memory seat
F43 –
F44 Rear closure
F45 Auxiliary audio/
Video/Radio
F46 External object
calculating/Side
blind zone alert/
Radar short range
sensor
F47 –
F48 Right front seat
F49 Memory bolster
module
F50 Body control
module 1
F51 Transmission
control module
F52 Parking assist

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
304 Vehicle Care (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
diagonal or bias ply
construction; and the letter B
means belted-bias ply
construction.
(5) Rim Diameter :
Diameter of
the wheel in inches.
(6) Service Description :
These
characters represent the load
index and speed rating of the
tire. The load index represents
the load carrying capacity a tire
is certified to carry. The speed
rating is the maximum speed a
tire is certified to carry a load.
Tire Terminology and
Definitions Air Pressure :
The amount of
air inside the tire pressing
outward on each square inch of the tire. Air pressure is
expressed in kPa (kilopascal)
or psi (pounds per square inch).
Accessory Weight :
The
combined weight of optional
accessories. Some examples of
optional accessories are
automatic transmission, power
windows, power seats, and air
conditioning.
Aspect Ratio :
The relationship
of a tire's height to its width.
Belt :
A rubber coated layer of
cords between the plies and the
tread. Cords may be made from
steel or other reinforcing
materials.
Bead :
The tire bead contains
steel wires wrapped by steel
cords that hold the tire onto
the rim.
Bias Ply Tire :
A pneumatic tire
in which the plies are laid at
alternate angles less than
90 degrees to the centerline of
the tread. Cold Tire Pressure :
The
amount of air pressure in a tire,
measured in kPa (kilopascal)
or psi (pounds per square inch)
before a tire has built up heat
from driving. See Tire
Pressure 0 306 .
Curb Weight :
The weight of a
motor vehicle with standard and
optional equipment including the
maximum capacity of fuel, oil,
and coolant, but without
passengers and cargo.
DOT Markings :
A code molded
into the sidewall of a tire
signifying that the tire is in
compliance with the U.S.
Department of Transportation
(DOT) Motor Vehicle Safety
Standards. The DOT code
includes the Tire Identification
Number (TIN), an alphanumeric
designator which can also
identify the tire manufacturer,
production plant, brand, and
date of production.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Vehicle Care 321Warning (Continued) 2. Put an automatic
transmission in P (Park) or a
manual transmission in
1 (First) or R (Reverse).
3. Turn off the engine and do
not restart while the vehicle
is raised.
4. Do not allow passengers to
remain in the vehicle.
5. Place wheel blocks,
if equipped, on both sides of
the tire at the opposite
corner of the tire being
changed.
When the vehicle has a flat tire (2),
use the following example as a
guide to assist in the placement of
the wheel blocks (1), if equipped. 1. Wheel Block (If Equipped)
2. Flat Tire
The following information explains
how to repair or change a tire. Tire Changing Removing the Spare Tire and
Tools
1. Jack
2. Retainer Nut
3. Tool Bag
4. Strap
5. Wrench
6. Tow Hook (If Equipped)
To access the spare tire and tools:
1. Open the trunk.
2. Lift the spare tire cover and
attach the handle to the
trunk edge.

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
332 Vehicle Care towed, a dolly should be used. See
the following information on dolly
towing.
CautionUse of a shield mounted in front
of the vehicle grille could restrict
airflow and cause damage to the
transmission. The repairs would
not be covered by the vehicle
warranty. If using a shield, only
use one that attaches to the
towing vehicle. Dolly Towing
(Rear-Wheel-Drive Vehicles)
To dolly tow a rear-wheel-drive
vehicle from the rear:
1. Attach the dolly to the tow
vehicle following the dolly
manufacturer instructions.
2. Put the rear wheels on the
dolly.
3. Shift the transmission to
P (Park).
4. Firmly set the parking brake. 5. Use an adequate clamping
device designed for towing to
ensure that the front wheels
are locked into the
straight-ahead position.
6. Secure the vehicle to the dolly
following the manufacturer
instructions.
7. Release the parking brake only
after the vehicle being towed is
firmly attached to the towing
vehicle.
8. Turn the ignition off.
Dolly Towing (All-Wheel Drive
Vehicles)

Cadillac CT6 Owner Manual (GMNA-Localizing-U.S./Canada-9235592) -
2016 - crc - 11/6/15
Service and Maintenance 345a year and the oil life system must
be reset. Your trained dealer
technician can perform this work.
If the engine oil life system is reset
accidentally, service the vehicle
within 5 000 km/3,000 mi since the
last service. Reset the oil life
system when the oil is changed.
See Engine Oil Life System 0 272 .
Tire Rotation and Required
Services Every 12 000 km/
7,500 mi Rotate the tires, if recommended for
the vehicle, and perform the
following services. See Tire
Rotation 0 313 .
.
Check engine oil level and oil
life percentage. If needed,
change engine oil and filter, and
reset oil life system. See Engine
Oil 0 270 and Engine Oil Life
System 0 272 .
.
Check engine coolant level. See
Engine Coolant 0 277 .
.
Check windshield washer fluid
level. See Washer Fluid 0 281 . .
Visually inspect windshield wiper
blades for wear, cracking,
or contamination. See Exterior
Care 0 333 . Replace worn or
damaged wiper blades. See
Wiper Blade
Replacement 0 286 .
.
Check tire inflation pressures.
See Tire Pressure 0 306 .
.
Inspect tire wear. See Tire
Inspection 0 312 .
.
Visually check for fluid leaks.
.
Inspect engine air cleaner filter.
See Engine Air Cleaner/
Filter 0 273 .
.
Inspect brake system. See
Exterior Care 0 333 .
.
Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of
wear. See Exterior Care 0 333 .
.
Check restraint system
components. See Safety System
Check 0 75 .
.
Visually inspect fuel system for
damage or leaks. .
Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
.
Lubricate body components. See
Exterior Care 0 333 .
.
Check starter switch. See Starter
Switch Check 0 285 .
.
Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function
Check 0 285 .
.
Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism
Check 0 286 .
.
Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.
Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
.
Inspect sunroof track and seal,
if equipped. See Sunroof 0 55 .