service CADILLAC XTS 2017 1.G Service Manual

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
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208 DRIVING AND OPERATING
The vehicle ahead indicator will
display amber when you are following
a vehicle ahead much too closely.
Selecting the Alert Timing
The Collision Alert control is on the
steering wheel. Press
[to set the
FCA timing to Far, Medium, or Near,
or on some vehicles, Off. The first
button press shows the current setting
on the DIC. Additional button presses
will change this setting. The chosen
setting will remain until it is changed
and will affect the timing of both the
Collision Alert and the Tailgating
Alert features. The timing of both
alerts will vary based on vehicle speed. The faster the vehicle speed, the
farther away the alert will occur.
Consider traffic and weather
conditions when selecting the alert
timing. The range of selectable alert
timings may not be appropriate for all
drivers and driving conditions.
If your vehicle is equipped with
Adaptive Cruise Control (ACC),
changing the FCA timing setting
automatically changes the following
gap setting (Far, Medium, or Near).
Unnecessary Alerts
FCA may provide unnecessary alerts
for turning vehicles, vehicles in other
lanes, objects that are not vehicles,
or shadows. These alerts are normal
operation and the vehicle does not
need service.
Cleaning the System
If the FCA system does not seem to
operate properly, cleaning the outside
of the windshield in front the rearview
mirror, and cleaning the front of the
vehicle where radar sensors are
located, may correct the issue.
Forward Automatic
Braking (FAB)
If the vehicle has Adaptive Cruise
Control (ACC), it also has FAB, which
includes Intelligent Brake Assist (IBA).
When the system detects a vehicle
ahead in your path that is traveling in
the same direction that you may be
about to crash into, it can provide a
boost to braking or automatically
brake the vehicle. This can help avoid
or lessen the severity of crashes when
driving in a forward gear. Depending
on the situation, the vehicle may
automatically brake moderately or
hard. This forward automatic braking
can only occur if a vehicle is detected.
This is shown by the FCA vehicle
ahead indicator being lit. See
Forward
Collision Alert (FCA) System 0206.
The system works when driving in a
forward gear above 4 km/h (2 mph).
It can detect vehicles up to
approximately 60 m (197 ft).

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DRIVING AND OPERATING 211
When the System Does Not
Seem to Work Properly
SBZA displays may not come on when
passing a vehicle quickly, for a
stopped vehicle, or when towing a
trailer. The SBZA detection zones that
extend back from the side of the
vehicle do not move further back
when a trailer is towed. Use caution
while changing lanes when towing a
trailer. SBZA may alert to objects
attached to the vehicle, such as a
trailer, bicycle, or object extending out
to either side of the vehicle. This is
normal system operation; the vehicle
does not need service.
SBZA may not always alert the driver
to vehicles in the side blind zone,
especially in wet conditions. The
system does not need to be serviced.
The system may light up due to
guardrails, signs, trees, shrubs, and
other non-moving objects. This is
normal system operation; the vehicle
does not need service.
SBZA may not operate when the SBZA
sensors in the left or right corners of
the rear bumper are covered with
mud, dirt, snow, ice, or slush, or inheavy rainstorms. For cleaning
instructions, see "Washing the
Vehicle" under
Exterior Care0278.
If the DIC still displays the system
unavailable message after cleaning
both sides of the vehicle toward the
rear corners of the vehicle, see your
dealer.
If the SBZA displays do not light up
when vehicles are in the blind zone
and the system is clean, the system
may need service. Take the vehicle to
your dealer.
When SBZA is disabled for any reason
other than the driver turning it off,
the Side Blind Zone Alert On option
will not be available on the
personalization menu.
Lane Departure
Warning (LDW)
If equipped, LDW may help avoid
crashes due to unintentional lane
departures. It may provide an alert if
the vehicle is crossing a lane without
using a turn signal in that direction.
LDW uses a camera sensor to detect
the lane markings at speeds of 56
km/h (35 mph) or greater.
{Warning
The LDW system does not steer the
vehicle. The LDW system may not:
. Provide enough time to avoid
a crash.
. Detect lane markings under
poor weather or visibility
conditions. This can occur if
the windshield or headlamps
are blocked by dirt, snow,
or ice; if they are not in
proper condition; or if the sun
shines directly into the
camera.
. Detect road edges.
. Detect lanes on winding or
hilly roads.
If LDW only detects lane markings
on one side of the road, it will only
warn you when departing the lane
on the side where it has detected a
lane marking. Always keep your
attention on the road and maintain
proper vehicle position within the
lane, or vehicle damage, injury, (Continued)

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212 DRIVING AND OPERATING
Warning (Continued)
or death could occur. Always keep
the windshield, headlamps, and
camera sensors clean and in good
repair. Do not use LDW in bad
weather conditions.
How the System Works
The LDW camera sensor is on the
windshield ahead of the rearview
mirror.
To turn LDW on and off, press
@on
the center stack to the left of the
infotainment screen. The control
indicator will light when LDW is on.
When LDW is on,@is green if LDW
is available to warn of a lane
departure. If the vehicle crosses a
detected lane marking without using the turn signal in that direction,
@
changes to amber and flashes.
Additionally, there will be three beeps,
or the driver seat will pulse three
times, on the right or left, depending
on the lane departure direction.
When the System Does Not
Seem to Work Properly
The system may not detect lanes as
well when there are:
.
Close vehicles ahead.
. Sudden lighting changes, such as
when driving through tunnels.
. Banked roads.
If the LDW system is not functioning
properly when lane markings are
clearly visible, cleaning the windshield
may help.
LDW alerts may occur due to tar
marks, shadows, cracks in the road,
temporary or construction lane
markings, or other road imperfections.
This is normal system operation; the
vehicle does not need service. Turn
LDW off if these conditions continue.
Fuel
Use the recommended fuel for proper
vehicle maintenance.
For the LFX 3.6L V6 engine, use
unleaded petrol with a posted octane
rating of 91 RON or higher, otherwise
an audible knocking noise may be
heard. If heavy knocking is heard
when using gasoline rated at 91 RON
or higher, the engine needs service.
For the LF3 3.6L V6 twin turbo engine,
use unleaded petrol with a posted
octane rating of 95 RON or higher.
If the octane is less than 95 RON, the
engine could be damaged and repairs
would not be covered by the vehicle
warranty. If heavy knocking is heard
when using petrol rated at 95 RON
octane, the engine needs service.

Cadillac XTS Owner Manual (GMNA-Localizing-MidEast-10292881) - 2017 -
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218 DRIVING AND OPERATING
Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both the
vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.
If parking the rig on a hill: 1. Press the brake pedal, but do not shift into P (Park) yet. Turn the
wheels into the curb if facing
downhill or into traffic if facing
uphill.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the brake pedal
until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parking brake and shift
into P (Park). 5. Release the brake pedal.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal
while you:
.Start the engine.
. Shift into a gear.
. Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer
Towing
The vehicle needs service more often
when pulling a trailer. See the
Maintenance Schedule 0288. Things
that are especially important in trailer
operation are automatic transmission
fluid, engine oil, axle lubricant, belts,
cooling system, and brake system.
Inspect these before and during
the trip.
Check periodically to see that all hitch
nuts and bolts are tight.
Engine Cooling When Trailer
Towing
The cooling system may temporarily
overheat during severe operating
conditions. See Engine
Overheating 0237.
Trailer Towing
Before pulling a trailer, there are three
important considerations that have to
do with weight:
.
The weight of the trailer.
. The weight of the trailer tongue.
. The total weight on your vehicle's
tires.
Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than
454 kg (1,000 lb). But even that can be
too heavy.
It depends on how the rig is used. For
example, speed, altitude, road grades,
outside temperature, and how much
the vehicle is used to pull a trailer are
all important. It can depend on any
special equipment on the vehicle, and

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220 DRIVING AND OPERATING
carbon monoxide (CO) from the
exhaust can get into the vehicle.
SeeEngine Exhaust 0182.
Safety Chains
Always attach chains between the
vehicle and the trailer. Cross the safety
chains under the tongue of the trailer
to help prevent the tongue from
contacting the road if it becomes
separated from the hitch. Leave
enough slack so the rig can turn.
Never allow safety chains to drag on
the ground.
Trailer Brakes
Does the trailer have its own brakes?
Be sure to read and follow the
instructions for the trailer brakes so
they are installed, adjusted, and
maintained properly.
Because the vehicle has antilock
brakes, do not tap into the vehicle's
brake system. If this is done, both
brake systems will not work well or
at all.
Conversions and
Add-Ons
Add-On Electrical
Equipment
{Warning
The Data Link Connector (DLC) is
used for vehicle service and
Emission Inspection/Maintenance
testing. See Malfunction Indicator
Lamp (Check Engine Light) 0120.
A device connected to the DLC —
such as an aftermarket fleet or
driver-behavior tracking device —
may interfere with vehicle systems.
This could affect vehicle operation
and cause a crash. Such devices
may also access information stored
in the vehicle’s systems.
Caution
Some electrical equipment can
damage the vehicle or cause
components to not work and would
not be covered by the vehicle
warranty. Always check with your
dealer before adding electrical
equipment.
Add-on equipment can drain the
vehicle's 12-volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see Servicing
the Airbag-Equipped Vehicle 079
and Adding Equipment to the
Airbag-Equipped Vehicle 079.

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VEHICLE CARE 221
Vehicle Care
General Information
General Information . . . . . . . . . . . . . 222
Accessories andModifications . . . . . . . . . . . . . . . . . . . 222
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . . . . . . 223
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . . . . . . . 224
Engine Cover . . . . . . . . . . . . . . . . . . . . . . 227
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . 228
Engine Oil Life System . . . . . . . . . . . 230
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Engine Air Cleaner/Filter . . . . . . . . . 231
Cooling System . . . . . . . . . . . . . . . . . . . 233
Engine Coolant . . . . . . . . . . . . . . . . . . . 234
Engine Overheating . . . . . . . . . . . . . . 237
Overheated Engine Protection Operating Mode . . . . . . . . . . . . . . . . . 238
Power Steering Fluid . . . . . . . . . . . . . 238
Washer Fluid . . . . . . . . . . . . . . . . . . . . . 239
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . 241
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . 242
All-Wheel Drive . . . . . . . . . . . . . . . . . . 242 Starter Switch Check . . . . . . . . . . . . . 243
Automatic Transmission Shift
Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243
Park Brake and P (Park)
Mechanism Check . . . . . . . . . . . . . . 243
Wiper Blade Replacement . . . . . . . 244
Windshield Replacement . . . . . . . . 244Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . . . . . 245
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . . . . . 245
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 245
LED Lighting . . . . . . . . . . . . . . . . . . . . . 245
Back-Up Lamps . . . . . . . . . . . . . . . . . . . 245
License Plate Lamp . . . . . . . . . . . . . . 246
Replacement Bulbs . . . . . . . . . . . . . . . 247
Electrical System
Electrical System Overload . . . . . . 247
Fuses and Circuit Breakers . . . . . . 248
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Instrument Panel Fuse Block . . . . 251
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Wheels and Tires
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 254 All-Season Tires . . . . . . . . . . . . . . . . . . 255
Winter Tires . . . . . . . . . . . . . . . . . . . . . . 255
Low-Profile Tires . . . . . . . . . . . . . . . . . 256
Summer Tires . . . . . . . . . . . . . . . . . . . . 256
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 256
Tire Pressure for High-Speed
Operation . . . . . . . . . . . . . . . . . . . . . . . . 257
Tire Pressure Monitor System . . . 258
Tire Pressure Monitor Operation . . . . . . . . . . . . . . . . . . . . . . . . 259
Tire Inspection . . . . . . . . . . . . . . . . . . . 262
Tire Rotation . . . . . . . . . . . . . . . . . . . . . 262
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Buying New Tires . . . . . . . . . . . . . . . . 264
Different Size Tires and Wheels . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Wheel Replacement . . . . . . . . . . . . . . 266
Tire Chains . . . . . . . . . . . . . . . . . . . . . . . 266
If a Tire Goes Flat . . . . . . . . . . . . . . . . 267
Tire Changing . . . . . . . . . . . . . . . . . . . . . 268
Compact Spare Tire . . . . . . . . . . . . . . 272
Jump Starting
Jump Starting . . . . . . . . . . . . . . . . . . . . . 273
Towing the Vehicle
Towing the Vehicle . . . . . . . . . . . . . . . 276
Recreational Vehicle Towing . . . . 276

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222 VEHICLE CARE
Appearance Care
Exterior Care . . . . . . . . . . . . . . . . . . . . . . 278
Interior Care . . . . . . . . . . . . . . . . . . . . . . 282
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . 285General Information
For service and parts needs, visit your
dealer. You will receive genuine parts
and trained and supported service
people.
Accessories and
Modifications
Adding non-dealer accessories or
making modifications to the vehicle
can affect vehicle performance and
safety, including such things as
airbags, braking, stability, ride and
handling, emissions systems,
aerodynamics, durability, and
electronic systems like antilock
brakes, traction control, and stability
control. These accessories or
modifications could even cause
malfunction or damage not covered by
the vehicle warranty.
Damage to suspension components
caused by modifying vehicle height
outside of factory settings will not be
covered by the vehicle warranty.Damage to vehicle components
resulting from modifications or the
installation or use of non-GM certified
parts, including control module or
software modifications, is not covered
under the terms of the vehicle
warranty and may affect remaining
warranty coverage for affected parts.
GM Accessories are designed to
complement and function with other
systems on the vehicle. See your
dealer to accessorize the vehicle using
genuine GM Accessories installed by a
dealer technician.
Also, see
Adding Equipment to the
Airbag-Equipped Vehicle 079.

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VEHICLE CARE 223
Vehicle Checks
Doing Your Own
Service Work
{Warning
It can be dangerous to work on
your vehicle if you do not have the
proper knowledge, service manual,
tools, or parts. Always follow
owner’s manual procedures and
consult the service manual for your
vehicle before doing any
service work.
If doing some of your own service
work, use the proper service manual.
It tells you much more about how to
service the vehicle than this
manual can.
This vehicle has an airbag system.
Before attempting to do your own
service work, see Airbag System
Check 080.
Keep a record with all parts receipts
and list the mileage and the date of
any service work performed.
Caution
Even small amounts of
contamination can cause damage to
vehicle systems. Do not allow
contaminants to contact the fluids,
reservoir caps, or dipsticks.
Hood
To open the hood:
1. Pull the hood release lever with this symbol on it. It is inside the
vehicle on the lower side of the
instrument panel.
2. Go to the front of the vehicle tofind the secondary hood release
handle. The handle is under the
front edge of the hood near the
center. Push the handle to the
right and at the same time raise
the hood.
Before closing the hood, be sure all
the filler caps are on properly. Then
bring the hood from full open to
within 15 cm (6 in) from the closed
position, pause, then push the front
center of the hood with a swift, firm
motion to fully close the hood.

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VEHICLE CARE 229
3.6L V6 Twin Turbo 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 0299.
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
level above the operating range, i.e.,
the engine has so much oil that the
oil level gets above the
(Continued)
Caution (Continued)
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
0 224 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 0295.
Specification
Ask for and use engine oils that meet
the dexos1™ specification. Engine oils
that have been approved by GM as meeting the dexos1 specification are
marked with the dexos1 approved
logo. See www.gmdexos.com.
Caution
Failure to use the recommended
engine oil or equivalent can result
in engine damage not covered by
the vehicle warranty.
Viscosity Grade
Use SAE 5W-30 viscosity grade
engine oil.
Cold Temperature Operation: In an
area of extreme cold, where the
temperature falls below −29 °C (−20 °
F), an SAE 0W-30 oil may be used. An
oil of this viscosity grade will provide
easier cold starting for the engine at
extremely low temperatures. When
selecting an oil of the appropriate

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230 VEHICLE CARE
viscosity grade, it is recommended to
select an oil of the correct
specification. See“Specification”
earlier in this section.
Engine Oil Additives/Engine Oil
Flushes
Do not add anything to the oil. The
recommended oils meeting the dexos1
specification are all that is needed for
good performance and engine
protection.
Engine oil system flushes are not
recommended and could cause engine
damage not covered by the vehicle
warranty.
What to Do with Used Oil
Used engine oil contains certain
elements that can be unhealthy for
your skin and could even cause
cancer. Do not let used oil stay on
your skin for very long. Clean your
skin and nails with soap and water,
or a good hand cleaner. Wash or
properly dispose of clothing or rags
containing used engine oil. See the
manufacturer's warnings about the
use and disposal of oil products. Used oil can be a threat to the
environment. If you change your own
oil, be sure to drain all the oil from
the filter before disposal. Never
dispose of oil by putting it in the trash
or pouring it on the ground, into
sewers, or into streams or bodies of
water. Recycle it by taking it to a place
that collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based on a
combination of factors which include
engine revolutions, engine
temperature, and miles driven. Based
on driving conditions, the mileage at
which an oil change is indicated can
vary considerably. For the oil life
system to work properly, the system
must be reset every time the oil is
changed.
When the system has calculated that
oil life has been diminished, it
indicates that an oil change is
necessary. A CHANGE ENGINE OIL
SOON message comes on. See
Engine
Oil Messages 0137. Change the oil as
soon as possible within the next
1 000 km (600 mi). It is possible that,
if driving under the best conditions,
the oil life system might indicate that
an oil change is not necessary for up
to a year. The engine oil and filter
must be changed at least once a year
and at this time the system must be
reset. Your dealer has trained service
people who will perform this work and
reset the system. It is also important
to check the oil regularly over the
course of an oil drain interval and
keep it at the proper level.
If the system is ever reset accidentally,
the oil must be changed at 5 000 km
(3,000 mi) since the last oil change.
Remember to reset the oil life system
whenever the oil is changed.