brake fluid CADILLAC CT6 2017 1.G Owners Manual
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Page 4 of 337
Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
INTRODUCTION 3
Symbols
The vehicle has components and
labels that use symbols instead of
text. Symbols are shown along with
the text describing the operation or
information relating to a specific
component, control, message, gauge,
or indicator.
M:Shown when the owner manual
has additional instructions or
information.
*: Shown when the service manual
has additional instructions or
information.
0: Shown when there is more
information on another page —
“see page.”
Vehicle Symbol Chart
Here are some additional symbols that
may be found on the vehicle and what
they mean. For more information on
the symbol, refer to the Index.
9: Airbag Readiness Light
#:Air Conditioning
G:Air Conditioning Refrigerant Oil
!:Antilock Brake System (ABS)
g: Audio Steering Wheel Controls or
OnStar®(if equipped)
$: Brake System Warning Light
I:Certified Technician
":Charging System
I: Cruise Control
`:Do Not Puncture
^:Do Not Service
B:Engine Coolant Temperature
O:Exterior Lamps
_:Flame/Fire Prohibited
H: Flammable
.:Fuel Gauge
+: Fuses
3:Headlamp High/Low-Beam
Changer
(: Heated Steering Wheel
j:LATCH System Child Restraints
*:Malfunction Indicator Lamp
::Oil Pressure
O:Power
/:Remote Vehicle Start
>:Safety Belt Reminders
h:Start/Stop
7: Tire Pressure Monitor
d:Traction Control/StabiliTrak®
a:Under Pressure
M: Windshield Washer Fluid
Page 143 of 337
Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
142 INSTRUMENTS AND CONTROLS
vehicle that may be noticed. At the
point that features are disabled, this
message displays. Turn off
unnecessary accessories to allow the
battery to recharge.
LOW BATTERY
This message is displayed when the
battery voltage is low. See
Battery0263.
SERVICE BATTERY CHARGING
SYSTEM
This message is displayed when there
is a fault in the battery charging
system. Take the vehicle to your
dealer for service.
TRANSPORT MODE ON
This message is displayed when the
vehicle is in transport mode. Some
features can be disabled while in this
mode, including Remote Keyless
Entry (RKE), remote start, and the
vehicle alarm system. Take the vehicle
to your dealer for service to turn
transport mode off.
Brake System Messages
BRAKE FLUID LOW
This message is displayed when the
brake fluid level is low. See Brake
Fluid 0262.
BRAKES OVERHEATED
This message is displayed when the
brakes are becoming overheated. This
may be seen when driving on hills.
Shift to a lower gear.
STEP ON BRAKE TO RELEASE
PARK BRAKE
This message is displayed if you
attempt to release the Electric Parking
Brake without the brake pedal applied.
See Electric Parking Brake 0205.
RELEASE PARKING BRAKE
This message is displayed if the
Electric Parking Brake is on while the
vehicle is in motion. See Electric
Parking Brake 0205.
SERVICE BRAKE ASSIST
This message may be displayed when
there is a problem with the brake
boost assist system. The brake boost assist motor may be heard and brake
pedal pulsation may be felt. This is
normal under these conditions. Take
the vehicle to your dealer for service.
SERVICE PARKING BRAKE
This message is displayed when there
is a problem with the parking brake.
Take the vehicle to your dealer for
service.
Cruise Control Messages
ADAPTIVE CRUISE SET TO XXX
This message displays when the
Adaptive Cruise Control (ACC) speed is
set. See
Adaptive Cruise Control 0213.
ADAPTIVE CRUISE TEMPORARILY
UNAVAILABLE
This message displays when
attempting to activate Adaptive Cruise
Control (ACC) when it is temporarily
unavailable. The ACC system does not
need service.
Page 187 of 337
Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
CRC - 6/21/16
186 DRIVING AND OPERATING
Braking
Braking action involves perception
time and reaction time. Deciding to
push the brake pedal is perception
time. Actually doing it is
reaction time.
Average driver reaction time is about
three-quarters of a second. In that
time, a vehicle moving at 100 km/h
(60 mph) travels 20 m (66 ft), which
could be a lot of distance in an
emergency.
Helpful braking tips to keep in mind
include:
.Keep enough distance between
you and the vehicle in front
of you.
. Avoid needless heavy braking.
. Keep pace with traffic.
If the engine ever stops while the
vehicle is being driven, brake normally
but do not pump the brakes. Doing so
could make the pedal harder to push
down. If the engine stops, there will
be some power brake assist but it will
be used when the brake is applied. Once the power assist is used up, it
can take longer to stop and the brake
pedal will be harder to push.
Steering
Variable Effort Steering
The vehicle has a steering system that
varies the amount of effort required to
steer the vehicle in relation to the
speed of the vehicle.
The amount of steering effort required
is less at slower speeds to make the
vehicle more maneuverable and easier
to park. At faster speeds, the steering
effort increases to provide a sport-like
feel to the steering. This provides
maximum control and stability.
Electric Power Steering
The vehicle has electric power
steering. It does not have power
steering fluid. Regular maintenance is
not required.
If power steering assist is lost due to a
system malfunction, the vehicle can
be steered, but may require increased
effort. See your dealer if there is a
problem.If the steering wheel is turned until it
reaches the end of its travel and is
held against that position for an
extended period of time, power
steering assist may be reduced.
If steering assist is used for an
extended period of time, power assist
may be reduced.
Normal use of the power steering
assist should return when the system
cools down.
See specific vehicle steering messages
under
Vehicle Messages 0141.
See your dealer if there is a problem.
Curve Tips
. Take curves at a reasonable speed.
. Reduce speed before entering a
curve.
. Maintain a reasonable steady
speed through the curve.
. Wait until the vehicle is out of the
curve before accelerating gently
into the straightaway.
Page 189 of 337
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188 DRIVING AND OPERATING
to a lower gear. Any sudden
changes could cause the tires to
slide.
Remember: Antilock brakes help avoid
only the braking skid.
Driving on Wet Roads
Rain and wet roads can reduce vehicle
traction and affect your ability to stop
and accelerate. Always drive slower in
these types of driving conditions and
avoid driving through large puddles
and deep-standing or flowing water.
{Warning
Wet brakes can cause crashes. They
might not work as well in a quick
stop and could cause pulling to one
side. You could lose control of the
vehicle.
After driving through a large puddle
of water or a car/vehicle wash,
lightly apply the brake pedal until
the brakes work normally. (Continued)
Warning (Continued)
Flowing or rushing water creates
strong forces. Driving through
flowing water could cause the
vehicle to be carried away. If this
happens, you and other vehicle
occupants could drown. Do not
ignore police warnings and be very
cautious about trying to drive
through flowing water.
Hydroplaning
Hydroplaning is dangerous. Water can
build up under the vehicle's tires so
they actually ride on the water. This
can happen if the road is wet enough
and you are going fast enough. When
the vehicle is hydroplaning, it has
little or no contact with the road.
There is no hard and fast rule about
hydroplaning. The best advice is to
slow down when the road is wet.
Other Rainy Weather Tips
Besides slowing down, other wet
weather driving tips include:
.Allow extra following distance. .
Pass with caution.
. Keep windshield wiping equipment
in good shape.
. Keep the windshield washer fluid
reservoir filled.
. Have good tires with proper tread
depth. See Tires0276.
. Turn off cruise control.
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving on
flat or rolling terrain. Tips include:
.Keep the vehicle serviced and in
good shape.
. Check all fluid levels and brakes,
tires, cooling system, and
transmission.
. Shift to a lower gear when going
down steep or long hills.
Page 245 of 337
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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
Page 249 of 337
Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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248 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.
Page 251 of 337
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.
Page 262 of 337
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VEHICLE CARE 261
Caution (Continued)
to freeze and damage the
washer fluid tank and other
parts of the washer system.
. When using concentrated
washer fluid, follow the
manufacturer instructions for
adding water.
. Fill the washer fluid tank only
three-quarters full when it is
very cold. This allows for
fluid expansion if freezing
occurs, which could damage
the tank if it is
completely full.
Brakes
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or can be
heard all the time when the vehicle is
moving, except when applying the
brake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will not
work well. That could lead to a
crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Caution
Continuing to drive with worn-out
brake pads could result in costly
brake repair.
Some driving conditions or climates
can cause a brake squeal when the
brakes are first applied or lightly
applied. This does not mean
something is wrong with the brakes.
Properly torqued wheel nuts are
necessary to help prevent brake
pulsation. When tires are rotated,
inspect brake pads for wear and
evenly tighten wheel nuts in the proper sequence to torque
specifications. See
Capacities and
Specifications 0322.
Brake pads should be replaced as
complete sets.
Brake Pedal Travel
See your dealer if the brake pedal does
not return to normal height, or if
there is a rapid increase in pedal
travel. This could be a sign that brake
service may be required.
Replacing Brake System Parts
Always replace brake system parts
with new, approved replacement parts.
If this is not done, the brakes may not
work properly. The braking
performance expected can change in
many other ways if the wrong
replacement brake parts are installed
or if parts are improperly installed.
Page 263 of 337
Cadillac CT6 Owner Manual (GMNA-Localizing-MidEast-10293390) - 2017 -
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262 VEHICLE CARE
Brake Fluid
The brake master cylinder reservoir is
filled with GM approved DOT 3 brake
fluid as indicated on the reservoir cap.
SeeEngine Compartment Overview
0 247 for the location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a level
surface, the brake fluid level should be
between the minimum and maximum
marks on the brake fluid reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down:
. Normal brake lining wear. When
new linings are installed, the fluid
level goes back up.
. A fluid leak in the brake hydraulic
system. Have the brake hydraulic
system fixed. With a leak, the
brakes will not work well. Always clean the brake fluid reservoir
cap and the area around the cap
before removing it.
Do not top off the brake fluid. Adding
fluid does not correct a leak. If fluid is
added when the linings are worn,
there will be too much fluid when
new brake linings are installed. Add or
remove fluid, as necessary, only when
work is done on the brake hydraulic
system.
{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You or
others could be burned, and the
vehicle could be damaged. Add
brake fluid only when work is done
on the brake hydraulic system.
When the brake fluid falls to a low
level, the brake warning light comes
on. See Brake System Warning
Light 0129.
Brake fluid absorbs water over time
which degrades the effectiveness of
the brake fluid. Replace brake fluid at the specified intervals to prevent
increased stopping distance. See
Maintenance Schedule
0311.
What to Add
Use only GM approved DOT 3 brake
fluid from a clean, sealed container.
See Recommended Fluids and
Lubricants 0318.
{Warning
The wrong or contaminated brake
fluid could result in damage to the
brake system. This could result in
the loss of braking leading to a
possible injury. Always use the
proper GM approved brake fluid.
Caution
If brake fluid is spilled on the
vehicle's painted surfaces, the paint
finish can be damaged. Immediately
wash off any painted surface.
Page 265 of 337
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264 VEHICLE CARE
All-Wheel Drive
If the vehicle is equipped with
All-Wheel Drive (AWD), this is an
additional system that needs
lubrication.
Transfer 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, seeRecommended Fluids and
Lubricants 0318.
Starter Switch Check
{Warning
When 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
{Warning
When 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.