oil change CADILLAC XT4 2021 User Guide

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
SERVICE AND MAINTENANCE 357
Service and
Maintenance
General Information
General Information . . . . . . . . . . . . . 357
Maintenance Schedule
Maintenance Schedule . . . . . . . . . . . 358
Special Application Services
Special Application Services . . . . . 364
Additional Maintenance
and Care
Additional Maintenanceand Care . . . . . . . . . . . . . . . . . . . . . . . . . 364
Recommended Fluids,
Lubricants, and Parts
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 367
Maintenance Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368
Maintenance Records
Maintenance Records . . . . . . . . . . . . 369
General Information
Your vehicle is an important
investment. This section describes the
required maintenance for the vehicle.
Follow this schedule to help protect
against major repair expenses
resulting from neglect or inadequate
maintenance. It may also help to
maintain the value of the vehicle if it
is sold. It is the responsibility of the
owner to have all required
maintenance performed.
Your dealer has trained technicians
who can perform required
maintenance using genuine
replacement parts. They have
up-to-date tools and equipment for
fast and accurate diagnostics. Many
dealers have extended evening and
Saturday hours, courtesy
transportation, and online scheduling
to assist with service needs.
Your dealer recognizes the importance
of providing competitively priced
maintenance and repair services. With
trained technicians, the dealer is the
place for routine maintenance such as
oil changes and tire rotations and additional maintenance items like
tires, brakes, batteries, and wiper
blades.
Caution
Damage caused by improper
maintenance can lead to costly
repairs and may not be covered by
the vehicle warranty. Maintenance
intervals, checks, inspections,
recommended fluids, and lubricants
are important to keep the vehicle in
good working condition.
Do not have chemical flushes that
are not approved by GM performed
on the vehicle. The use of flushes,
solvents, cleaners, or lubricants that
are not approved by GM could
damage the vehicle, requiring
expensive repairs that are not
covered by the vehicle warranty.
The Tire Rotation and Required
Services are the responsibility of the
vehicle owner. It is recommended to
have your dealer perform these
services every 12 000 km/7,500 mi.
Proper vehicle maintenance helps to

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
358 SERVICE AND MAINTENANCE
keep the vehicle in good working
condition, improves fuel economy, and
reduces vehicle emissions.
Because of the way people use
vehicles, maintenance needs vary.
There may need to be more frequent
checks and services. The Additional
Required Services - Normal are for
vehicles that:
.Carry passengers and cargo within
recommended limits on the Tire
and Loading Information label. See
Vehicle Load Limits0215.
.Are driven on reasonable road
surfaces within legal driving limits.
.Use the recommended fuel. See
Recommended Fuel 0267.
Refer to the information in the
Maintenance Schedule Additional
Required Services - Normal chart.
The Additional Required Services -
Severe are for vehicles that are:
.Mainly driven in heavy city traffic
in hot weather.
.Mainly driven in hilly or
mountainous terrain.
.Frequently towing a trailer.
.Used for high speed or competitive
driving.
.Used for taxi, police, or delivery
service.
Refer to the information in the
Maintenance Schedule Additional
Required Services - Severe chart.
{Warning
Performing maintenance work can
be dangerous and can cause serious
injury. Perform maintenance work
only if the required information,
proper tools, and equipment are
available. If they are not, see your
dealer to have a trained technician
do the work. See Doing Your Own
Service Work 0283.
Maintenance Schedule
Owner Checks and Services
Check the engine oil level. See Engine
Oil 0286.
Once a Month
.Check the tire inflation pressures.
See Tire Pressure 0316.
.Inspect the tires for wear. See Tire
Inspection 0322.
.Check the windshield washer fluid
level. See Washer Fluid 0295.
Engine Oil Change
When the CHANGE ENGINE OIL
SOON message displays, have the
engine oil and filter changed within
the next 1 000 km/600 mi. If driven
under the best conditions, the engine
oil life system may not indicate the
need for vehicle service for up to a
year. The engine oil and filter must be
changed at least once a year and the
oil life system must be reset. Your

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
SERVICE AND MAINTENANCE 359
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 System0288.
Engine Air Filter Change
When the REPLACE AT NEXT OIL
CHANGE message displays, the engine
air filter should be replaced at the
next engine oil change. When the
REPLACE ENGINE AIR FILTER SOON
message displays, the engine air filter
should be replaced at the earliest
convenience. Reset the engine air
filter life system after the engine air
filter is replaced. See Engine Air Filter
Life System 0289.
Air Conditioning Desiccant
(Replace Every Seven Years)
The air conditioning system requires
maintenance every seven years. This
service requires replacement of the
desiccant to help the longevity and efficient operation of the air
conditioning system. This service can
be complex. See your dealer.
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 Rotation0323.
.Check engine oil level and oil
life percentage. If needed, change
engine oil and filter, and reset oil
life system. See Engine Oil0286 and
Engine Oil Life System 0288.
.Check the air filter life percentage.
If necessary, replace the engine air
filter and reset the engine air filter
life system. See Engine Air Filter Life
System 0289.
.Check engine coolant level. See
Cooling System 0291.
.Check windshield washer fluid level.
See Washer Fluid 0295.
.Check tire inflation pressures. See
Tire Pressure 0316.
.Inspect tire wear. See Tire Inspection
0 322.
.Visually check for fluid leaks.
.Inspect brake system. See Exterior
Care 0348.
.Visually inspect steering,
suspension, and chassis
components for damage, including
cracks or tears in the rubber boots,
loose or missing parts, or signs of
wear at least once a year. See
Exterior Care 0348.
.Inspect power steering for proper
attachment, connections, binding,
leaks, cracks, chafing, etc.
.Visually inspect halfshafts and drive
shafts for excessive wear, lubricant
leaks, and/or damage including:
tube dents or cracks, constant
velocity joint or universal joint
looseness, cracked or missing boots,
loose or missing boot clamps, center
bearing excessive looseness, loose or
missing fasteners, and axle seal
leaks.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
SERVICE AND MAINTENANCE 361
Maintenance Schedule
Additional Required Services -
Normal12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires, if recommended for the vehicle, and
perform Required Services. (1) Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed.
Check engine air filter life percentage and status.
Change engine air filter, if needed.
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (2)@ @@@@@
Inspect evaporative control system. (3)@ @@
Replace spark plugs. Inspect spark plug wires and/or
boots.@ @
Change rear axle fluid, if equipped with AWD. (4)@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Replace front and rear wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts. (9)@ @
Replace air conditioning desiccant. (10)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
SERVICE AND MAINTENANCE 363
Maintenance Schedule
Additional Required Services -
Severe12 000 km/7,500 mi
24 000 km/15,000 mi
36 000 km/22,500 mi
48 000 km/30,000 mi
60 000 km/37,500 mi
72 000 km/45,000 mi
84 000 km/52,500 mi
96 000 km/60,000 mi
108 000 km/67,500 mi
120 000 km/75,000 mi
132 000 km/82,500 mi
144 000 km/90,000 mi
156 000 km/97,500 mi
168 000 km/105,000 mi
180 000 km/112,500 mi
192 000 km/120,000 mi
204 000 km/127,500 mi
216 000 km/135,000 mi
228 000 km/142,500 mi
240 000 km/150,000 mi
Rotate tires, if recommended for the vehicle, and
perform Required Services. (1) Check engine oil level
and oil life percentage. Change engine oil and filter,
if needed.
Check engine air filter life percentage and status.
Change engine air filter, if needed.
@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @
Replace passenger compartment air filter. (2)@ @@@@@
Inspect evaporative control system. (3)@ @@
Replace spark plugs. Inspect spark plug wires and/or
boots.@ @
Change rear axle fluid, if equipped with AWD. (4)@ @
Change automatic transmission fluid.@@@
Drain and fill engine cooling system. (5)@
Visually inspect accessory drive belts. (6)@
Replace brake fluid. (7)
Replace front and rear wiper blades. (8)
@ @ @ @ @ @ @ @ @ @
Replace hood and/or body lift support gas struts. (9)@ @
Replace air conditioning desiccant. (10)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
364 SERVICE AND MAINTENANCE
Footnotes—Maintenance Schedule
Additional Required Services -
Severe
(1) Vehicles with different size front
and rear tires do not have tire
rotation. See Tire Rotation0323.
(2) Or every two years, whichever
comes first. More frequent passenger
compartment air filter replacement
may be needed if driving in areas with
heavy traffic, poor air quality, high
dust levels, or environmental
allergens. Passenger compartment air
filter replacement may also be needed
if there is reduced airf low, window
fogging, or odors. Your GM dealer can
help determine when to replace the
filter.
(3) Visually check all fuel and vapor
lines and hoses for proper attachment,
connection, routing, and condition.
(4) Do not directly power wash the
transfer case and/or front/rear axle
output seals. High pressure water can
overcome the seals and contaminate
the transfer case fluid. Contaminated
fluid will decrease the life of the
transfer case and/or axles and should
be replaced. (5)
Or every five years, whichever
comes first. See Cooling System0291.
(6) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage; replace,
if needed.
(7) Replace brake fluid every five
years. See Brake Fluid 0296.
(8) Or every 12 months, whichever
comes first. See Wiper Blade
Replacement 0299.
(9) Or every 10 years, whichever
comes first. See Gas Strut(s)0300.
(10) Replace air conditioning
desiccant every seven years.
Special Application
Services
.Severe Commercial Use Vehicles
Only: Lubricate chassis components
every oil change.
.Have underbody flushing service
performed. See "Underbody
Maintenance" in Exterior Care0348.
Additional Maintenance
and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional maintenance
services may be required.
It is recommended that your dealer
perform these services —their trained
dealer technicians know your vehicle
best. Your dealer can also perform a
thorough assessment with a
multi-point inspection to recommend
when your vehicle may need
attention.
The following list is intended to
explain the services and conditions to
look for that may indicate services are
required.
Battery
The 12-volt battery supplies power to
start the engine and operate any
additional electrical accessories.
.To avoid break-down or failure to
start the vehicle, maintain a battery
with full cranking power.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
394 CONNECTED SERVICES
MyCadillac Mobile App (If Available)
Download the myCadillac mobile app
to compatible Apple and Android
smartphones. Cadillac users can
access the following services from a
smartphone:
.Remotely start/stop the vehicle,
if factory-equipped.
.Lock/unlock doors, if equipped with
automatic locks.
.Activate the horn and lamps.
.Check the vehicle’s fuel level, oil
life, or tire pressure,
if factory-equipped with the Tire
Pressure Monitor System.
.Send destinations to the vehicle.
.Locate the vehicle on a map (U.S.
market only).
.Turn the vehicle's Wi-Fi hotspot on/
off, manage settings, and monitor
data consumption, if equipped.
.Locate a dealer and schedule
service.
.Request Roadside Service.
.Set a parking reminder with pin
drop, take a photo, make a note,
and set a timer.
.Connect with Cadillac on social
media.
Features are subject to change. For
myCadillac mobile app information
and compatibility, see my.cadillac.com.
An active OnStar or connected service
plan may be required. A compatible
device, factory-installed remote start,
and power locks are required. Data
rates apply. See www.onstar.com for
details and system limitations.
Remote Services
Contact an OnStar Advisor to unlock
the doors or sound the horn and flash
the lamps.
Marketplace
OnStar Advisors can provide offers
from restaurants and retailers on your
route, help locate hotels, or book a
room. These services vary by market.
Diagnostics
By monitoring and reporting on the
vehicle’s key systems, OnStar
Advanced Diagnostics, if equipped,
provides a way to keep up on
maintenance. Capabilities vary by model. See www.onstar.com for details
and system limitations. Features are
subject to change. For updates on
feature capabilities, see
my.cadillac.com. Message and data
rates may apply.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
400 INDEX
High-Speed Operation . . . . . . . . . . . . . . 317
Hill and Mountain Roads . . . . . . . . . . 213
Hill Start Assist (HSA) . . . . . . . . . . . . . 234
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 284
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
How to Wear Seat Belts Properly . . . 48
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 197
I
If the System Needs Service . . . . . . . 164
Ignition Positions . . . . . . . . . . . . . . . . . . . 219
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 27
IndicatorPedestrian Ahead . . . . . . . . . . . . . . . . . 110
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 109
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Information Publication Ordering . . . . . . . . . . . . . 383
Infotainment System . . . . . . . . . . . . . . . 386
Instrument Cluster . . . . . . . . . . . . . . . . . . 99
Instrument Panel Overview . . . . . . . . . . . 4
Interior Rearview Mirrors . . . . . . . . . . . 30
Introduction . . . . . . . . . . . . . . . . . . . . . . 1, 136
J
Jump Starting - North America . . . . 342
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . 7
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 310
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Daytime Running (DRL) . . . . . . . . . . 131
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Exterior Controls . . . . . . . . . . . . . . . . . . 129
Exterior Lamps Off Reminder . . . . 131
Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 105
On Reminder . . . . . . . . . . . . . . . . . . . . . . 113
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Lane Change Alert (LCA) . . . . . . . . . . . 263
Lane Keep Assist (LKA) . . . . . . . . . . . . 265
Lane Keep Assist Light . . . . . . . . . . . . . 109
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 50
LATCH System Replacing Parts after a Crash . . . . . 79
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . . . . . . 72 LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 301
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Light
Performance Shifting . . . . . . . . . . . . . 109
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
Illumination Control . . . . . . . . . . . . . . 133
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301
Lights Airbag Readiness . . . . . . . . . . . . . . . . . 104
All-Wheel Drive . . . . . . . . . . . . . . . . . . . 109
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . 108
Brake System Warning . . . . . . . . . . . 107
Charging System . . . . . . . . . . . . . . . . . . 105
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 105
Cruise Control . . . . . . . . . . . . . . . . . . . . . 113
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Driver Mode Control . . . . . . . . . . . . . . 111
Electric Parking Brake . . . . . . . . . . . . 107
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . 111
Engine Oil Pressure . . . . . . . . . . . . . . . 112
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 131
Gear Shifting . . . . . . . . . . . . . . . . . . . . . . 108
High-Beam On . . . . . . . . . . . . . . . . . . . . 113

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
14584367) - 2021 - CRC - 10/14/20
INDEX 401
Lights (cont'd)High/Low Beam Changer . . . . . . . . . 131
Lane Keep Assist . . . . . . . . . . . . . . . . . . 109
Low Fuel Warning . . . . . . . . . . . . . . . . 112
Seat Belt Reminders . . . . . . . . . . . . . . 103
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Service Electric Parking
Brake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 110
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 111
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . . . . . 110
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 110
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . 18
Delayed Locking . . . . . . . . . . . . . . . . . . . 18
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Lockout Protection . . . . . . . . . . . . . . . . 18
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . 18
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 208
Low Fuel Warning Light . . . . . . . . . . . 112
Lower Anchors and Tethers for
Children (LATCH System) . . . . . . . . . 72
Lumbar Adjustment . . . . . . . . . . . . . . . . . 39 Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . 39M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 364
Maintenance Schedule . . . . . . . . . . . . . 358 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 367
Malfunction Indicator Lamp . . . . . . . 105
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . 231
Map Data Updates . . . . . . . . . . . . . . . . . . 164
Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Media Avoiding Untrusted Devices . . . . . 147
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 41
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . 120
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 120
Mirror Rear Camera . . . . . . . . . . . . . . . . . . . . . . . 30
Mirrors Automatic Dimming . . . . . . . . . . . . . . . 29
Automatic Dimming Rearview . . . . 30
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Mirrors (cont'd)
Manual Rearview . . . . . . . . . . . . . . . . . . 30
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . 29
Mirrors, Interior Rearview . . . . . . . . . . . 30
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 236 Driver Control . . . . . . . . . . . . . . . . . . . . . 236
Monitor System, Tire Pressure . . . . . 318
Multi-band Antenna . . . . . . . . . . . . . . . . 146
N
Navigation Connected Services . . . . . . . . . . . . . . . 392
Destination . . . . . . . . . . . . . . . . . . . . . . . . 156
Using the System . . . . . . . . . . . . . . . . . 151
Navigation Symbols . . . . . . . . . . . . . . . . 155
New Vehicle Break-In . . . . . . . . . . . . . . . 219
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286
Engine Oil Life System . . . . . . . . . . . 288
Pressure Light . . . . . . . . . . . . . . . . . . . . . 112
Older Children, Restraints . . . . . . . . . . . 65