tow CADILLAC CT6 2017 1.G Owner's Guide

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
244 VEHICLE CARE
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 245
Accessories andModifications . . . . . . . . . . . . . . . . . . . 245
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 245
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 247
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 250
Engine Oil Life System . . . . . . . . . . . 252
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
Engine Air Cleaner/Filter . . . . . . . . . 254
Cooling System . . . . . . . . . . . . . . . . . . . 255
Engine Coolant . . . . . . . . . . . . . . . . . . . 256
Engine Overheating . . . . . . . . . . . . . . 259
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 260
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 262
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
All-Wheel Drive . . . . . . . . . . . . . . . . . . 264
Starter Switch Check . . . . . . . . . . . . . 264
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264 Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 265
Wiper Blade Replacement . . . . . . . 265
Windshield Replacement . . . . . . . . 266
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 266
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 267
LED Lighting . . . . . . . . . . . . . . . . . . . . . 267
License Plate Lamp . . . . . . . . . . . . . . 267
Replacement Bulbs . . . . . . . . . . . . . . . 267
Electrical System
Electrical System Overload . . . . . . 268
Fuses and Circuit Breakers . . . . . . 269
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269
Instrument Panel Fuse Block . . . . 272
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
All-Season Tires . . . . . . . . . . . . . . . . . . 277
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 277
Low-Profile Tires . . . . . . . . . . . . . . . . . 278
Summer Tires . . . . . . . . . . . . . . . . . . . . 278
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 279
Tire Pressure for High-SpeedOperation . . . . . . . . . . . . . . . . . . . . . . . . 280 Tire Pressure Monitor System . . . 280
Tire Pressure Monitor
Operation . . . . . . . . . . . . . . . . . . . . . . . . 281
Tire Inspection . . . . . . . . . . . . . . . . . . . 284
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 284
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Buying New Tires . . . . . . . . . . . . . . . . 286
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 288
Wheel Replacement . . . . . . . . . . . . . . 288
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 289
If a Tire Goes Flat . . . . . . . . . . . . . . . . 289
Tire Changing . . . . . . . . . . . . . . . . . . . . . 291
Compact Spare Tire . . . . . . . . . . . . . . 295
Jump Starting
Jump Starting . . . . . . . . . . . . . . . . . . . . . 296
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . 299
Recreational Vehicle Towing . . . . 299
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . 301
Interior Care . . . . . . . . . . . . . . . . . . . . . . 305
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . 308

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
250 VEHICLE CARE
1. Engine Coolant Surge Tank andPressure Cap. See Cooling
System 0255.
2. Engine Air Cleaner/Filter 0254.
3. Engine Cooling Fan (Out of View). See Cooling System 0255.
4. Engine Oil Fill Cap. See Engine
Oil 0250.
5. Engine Oil Dipstick. See Engine
Oil 0250.
6. Remote Positive (+) Battery Terminal. See Jump
Starting 0296.
7. Engine Compartment Fuse
Block 0269.
8. Brake Fluid Reservoir. See Brake
Fluid 0262.
9. Windshield Washer Fluid Reservoir. See Washer
Fluid 0260.
10. Remote Negative (-) Battery Terminal. See Jump
Starting 0296.Engine Oil
To ensure proper engine performance
and long life, careful attention must
be paid to engine oil. Following these
simple, but important steps will help
protect your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil” in
this section.
. Check the engine oil level regularly
and maintain the proper oil level.
See “Checking Engine Oil” and
“When to Add Engine Oil” in this
section.
. Change the engine oil at the
appropriate time. See Engine Oil
Life System 0252.
. Always dispose of engine oil
properly. See “What to Do with
Used Oil” later in this section.
Checking Engine Oil
Check the engine oil level regularly
(every 650 km (400 mi), especially
prior to a long trip. The engine oil dipstick handle is a loop. See
Engine
Compartment Overview 0247 for the
location.
{Warning
The engine oil dipstick handle may
be hot; it could burn you. Use a
towel or glove to touch the dipstick
handle.
If a low oil Driver Information Center
(DIC) message displays, check the oil
level.
Follow these guidelines:
. To get an accurate reading, park
the vehicle on level ground. Check
the engine oil level after the
engine has been off for at least
two hours. Checking the engine oil
level on steep grades or too soon
after engine shutoff can result in
incorrect readings. Accuracy
improves when checking a cold
engine prior to starting. Remove
the dipstick and check the level.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 251
.If unable to wait two hours, the
engine must be off for at least
15 minutes if the engine is warm,
or at least 30 minutes if the
engine is not warm. Pull out the
dipstick, wipe it with a clean paper
towel or cloth, then push it back
in all the way. Remove it again,
keeping the tip down, and check
the level.
When to Add Engine Oil
3.0L Twin Turbo V6 Engine
3.6L V6 Engine
If the oil is below the cross-hatched
area at the tip of the dipstick and the
engine has been off for at least
15 minutes, add 1 L (1 qt) of the
recommended oil and then recheck
the level. See “Selecting the Right
Engine Oil” later in this section for an
explanation of what kind of oil to use.
For engine oil crankcase capacity, see
Capacities and Specifications 0322.
Caution
Do not add too much oil. Oil levels
above or below the acceptable
operating range shown on the
dipstick are harmful to the engine.
If you find that you have an oil
(Continued)
Caution (Continued)
level above the operating range, i.e.,
the engine has so much oil that the
oil level gets above the
cross-hatched area that shows the
proper operating range, the engine
could be damaged. You should
drain out the excess oil or limit
driving of the vehicle and seek a
service professional to remove the
excess amount of oil.
See Engine Compartment Overview
0 247 for the location of the engine oil
fill cap.
Add enough oil to put the level
somewhere in the proper operating
range. Push the dipstick all the way
back in when through.
Selecting the Right Engine Oil
Selecting the right engine oil depends
on both the proper oil specification
and viscosity grade. See Recommended
Fluids and Lubricants 0318.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 265
2. Firmly apply the parking brake.See Electric Parking Brake 0205.
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 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 0319. To replace the wiper blade assembly:
1. Pull the windshield wiper assembly away from the
windshield.
2. Lift up on the latch in the middleof the wiper blade where the
wiper arm attaches.
3. With the latch open, pull the wiper blade down toward the
windshield far enough to release
it from the J-hooked end of the
wiper arm.
4. Remove the wiper blade.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 267
Bulb Replacement
For the proper type of replacement
bulbs, seeReplacement Bulbs 0267.
For any bulb-changing procedure not
listed in this section, contact your
dealer.
LED Lighting
This vehicle has several LED lamps.
For replacement of any LED lighting
assembly not listed here, contact your
dealer.
License Plate Lamp
Lamp Assembly
To replace one of these lamps:
1. Push the lamp assembly toward the center of the vehicle.
2. Pull the lamp assembly down to expose the LED connector. 3. Pull the retaining tab on the LED
connector up to release the lamp
assembly. Remove the lamp
assembly.
4. Install the new lamp assembly on the LED connector. Push in
the retaining tab to lock the new
lamp assembly in place.
5. Push the lamp assembly back into position until the release tab
locks into place.Replacement Bulbs
Exterior Lamp Bulb Number
License Plate Lamp 13588150
For replacement bulbs not listed here,
contact your dealer.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 285
Use this rotation pattern if the
vehicle has different size tires on
the front and rear.
Different tire sizes should not be
rotated front to rear.Use this rotation pattern when
rotating tires of the same size
installed on all four wheel
positions.
If the vehicle has a compact spare
tire, do not include it in the tire
rotation.
Adjust the front and rear tires to
the recommended inflation
pressure on the Tire and Loading
Information label after the tires
have been rotated. SeeTire
Pressure 0279 and Vehicle Load
Limits 0191. Reset the Tire Pressure Monitor
System. See
Tire Pressure Monitor
Operation 0281.
Check that all wheel nuts are
properly tightened. See “Wheel
Nut Torque ”under Capacities and
Specifications 0322.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any rust
or dirt from places where the wheel
attaches to the vehicle. In an
emergency, a cloth or a paper towel
can be used; however, use a scraper
or wire brush later to remove all
rust or dirt.
Lightly coat the center of the
wheel hub with wheel bearing
grease after a wheel change or tire
rotation to prevent corrosion or
rust build-up. Do not get grease

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
290 VEHICLE CARE
more likely to leak out slowly. But if
there ever is a blowout, here are a few
tips about what to expect and what
to do:
If a front tire fails, the flat tire creates
a drag that pulls the vehicle toward
that side. Take your foot off the
accelerator pedal and grip the steering
wheel firmly. Steer to maintain lane
position, and then gently brake to a
stop, well off the road, if possible.
A rear blowout, particularly on a
curve, acts much like a skid and may
require the same correction as used in
a skid. Stop pressing the accelerator
pedal and steer to straighten the
vehicle. It may be very bumpy and
noisy. Gently brake to a stop, well off
the road, if possible.
{Warning
Driving on a flat tire will cause
permanent damage to the tire.
Re-inflating a tire after it has been
driven on while severely
underinflated or flat may cause a
blowout and a serious crash. Never(Continued)
Warning (Continued)
attempt to re-inflate a tire that has
been driven on while severely
underinflated or flat. Have your
dealer or an authorized tire service
center repair or replace the flat tire
as soon as possible.
{Warning
Lifting a vehicle and getting under
it to do maintenance or repairs is
dangerous without the appropriate
safety equipment and training. If a
jack is provided with the vehicle, it
is designed only for changing a flat
tire. If it is used for anything else,
you or others could be badly injured
or killed if the vehicle slips off the
jack. If a jack is provided with the
vehicle, only use it for changing a
flat tire.
If a tire goes flat, avoid further tire
and wheel damage by driving slowly
to a level place, well off the road, if possible. Turn on the hazard
warning flashers. See
Hazard Warning
Flashers 0166.
{Warning
Changing a tire can be dangerous.
The vehicle can slip off the jack and
roll over or fall causing injury or
death. Find a level place to change
the tire. To help prevent the vehicle
from moving:
1. Set the parking brake firmly.
2. Put an automatictransmission 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.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 291
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.
3. Turn the retainer nutcounterclockwise and remove the
spare tire. Place the spare tire
next to the tire being changed.
4. Remove the jack and tools from their container and place them
near the tire being changed.
Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check beforeproceeding. See If a Tire Goes
Flat 0289.
2. Turn the wheel wrench counterclockwise to loosen and
remove the wheel nut caps.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 293
pads, as shown. The jack must
not be used in any other
position.
9. Raise the vehicle by turning thejack handle clockwise. Raise the
vehicle far enough off the ground
so there is enough room for the
road tire to clear the ground.
10. Remove all of the wheel nuts.
11. Remove the flat tire.
{Warning
Rust or dirt on a wheel, or on the
parts to which it is fastened, can
make wheel nuts become loose
after time. The wheel could come
off and cause an accident. When
changing a wheel, remove any rust
or dirt from places where the wheel
attaches to the vehicle. In an
emergency, a cloth or a paper towel
(Continued)
Warning (Continued)
can be used; however, use a scraper
or wire brush later to remove all
rust or dirt.
12. Remove any rust or dirt from thewheel bolts, mounting surfaces,
and spare wheel.
13. Place the compact spare tire on the wheel-mounting surface.

Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
VEHICLE CARE 299
Towing the Vehicle
Caution
Incorrectly towing a disabled
vehicle may cause damage. The
damage would not be covered by
the vehicle warranty.
Do not lash or hook to suspension
components. Use the proper straps
around the tires to secure the
vehicle.
Have the vehicle towed on a flatbed
car carrier. A wheel lift tow truck
could damage the vehicle.
Consult your dealer or a professional
towing service if the disabled vehicle
must be towed.
Use the tow eye for towing a disabled
vehicle or loading it onto a flatbed car
carrier. The tow eye should not be
used to recover a vehicle from an off
road situation.
Caution
Improper use of the tow eye can
cause vehicle damage. Use caution
and low speeds to prevent damage
to the vehicle.
Carefully open the cover in the fascia
by using the small notch that conceals
the tow eye socket.
Install the tow eye into the socket by
turning it clockwise until it stops.
Remove the tow eye by turning it
counterclockwise. When the tow eye is
removed, reinstall the cover with the
notch in the original position.
Recreational Vehicle
Towing
Recreational vehicle towing means
towing the vehicle behind another
vehicle such as a motor home. The
two most common types of
recreational vehicle towing are known
as dinghy towing and dolly towing.
Dinghy towing is towing the vehicle
with all four wheels on the ground.
Dolly towing is towing the vehicle with two wheels on the ground and
two wheels up on a device known as a
dolly.
Here are some important things to
consider before recreational vehicle
towing:
.
What is the towing capacity of the
towing vehicle? Be sure to read the
tow vehicle manufacturer's
recommendations.
. What is the distance that will be
traveled? Some vehicles have
restrictions on how far and how
long they can tow.
. Is the proper towing equipment
going to be used? See your dealer
or trailering professional for
additional advice and equipment
recommendations.
. Is the vehicle ready to be towed?
Just as preparing the vehicle for a
long trip, make sure the vehicle is
prepared to be towed.