2021 CADILLAC XT4 364
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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
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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.
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INDEX 395
IndexA
About Driving the Vehicle . . . . . . . . . . . . . 2
Accessories and Modifications . . . . . 283
Accessory Power . . . . . . . . . . . . . . . . . . . . 224
Active Fuel Management . . . . . . . . . . . 225
Adaptive Cruise Control . . . . . . . . . . . . 240
Add-On Electrical Equipment . . . . . . 280
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388
Additional Maintenance
and Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . 39
Agreements
Trademarks and License . . . . . . . . . 187
Air Cleaner/Filter, Engine . . . . . . . . . . 290
Air Conditioning . . . . . . . . . . . . . . . . . . . . 197
Air Filter Life System . . . . . . . . . . . . . . . . . . . . . . . . 289
Air Filter, Passenger Compartment . . . . . . . . . . . . . . . . . . . . . 201
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
How Does an Airbag Restrain? . . . . 58
Passenger Sensing System . . . . . . . . 60
What Makes an AirbagInflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58 Airbag System (cont'd)
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . . . . 59
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Where Are the Airbags? . . . . . . . . . . . 56
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Passenger Status Indicator . . . . . . . 104
Readiness Light . . . . . . . . . . . . . . . . . . . 104
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
System Check . . . . . . . . . . . . . . . . . . . . . . 54
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . 25
Alert Lane Change . . . . . . . . . . . . . . . . . . . . . . 263
Rear Pedestrian . . . . . . . . . . . . . . . . . . . 256
Side Blind Zone (SBZA) . . . . . . . . . . 263
All-Season Tires . . . . . . . . . . . . . . . . . . . . . 309
All-Wheel Drive . . . . . . . . . . . . . . . .232, 298
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . 142
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . . . . . 146
Antilock Brake System (ABS) . . . . . . 232 Warning Light . . . . . . . . . . . . . . . . . . . . 108
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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
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404 INDEX
Service (cont'd)Maintenance Records . . . . . . . . . . . . 369
Maintenance, General
Information . . . . . . . . . . . . . . . . . . . . . . 357
Parts Identification . . . . . . . . . . . . . . . 370
Scheduling Appointments . . . . . . . . 379
Service Electric Parking Brake
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
Services Special Application . . . . . . . . . . . . . . . 364
Servicing System . . . . . . . . . . . . . . . . . . . . 164
Servicing the Airbag . . . . . . . . . . . . . . . . . 64
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Shifting Into Park . . . . . . . . . . . . . . . . . . . . . . . . . . 224
Out of Park . . . . . . . . . . . . . . . . . . . . . . . . 224
Side Blind Zone Alert (SBZA) . . . . . . 263
Signals, Turn and Lane-Change . . . . 132
Software Updates . . . . . . . . . . . . . . . . . . . 142
Spare Tire Compact . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Special Application Services . . . . . . . 364
Specifications and Capacities . . . . . . 371
Speedometer . . . . . . . . . . . . . . . . . . . . . . . . 101
StabiliTrak OFF Light . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Start Assist, Hill . . . . . . . . . . . . . . . . . . . . 234
Start Vehicle, Remote . . . . . . . . . . . . . . . 14 Starting the Engine . . . . . . . . . . . . . . . . . 220
Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206
Heated Wheel . . . . . . . . . . . . . . . . . . . . . . 91
Wheel Adjustment . . . . . . . . . . . . . . . . . 91
Wheel Controls . . . . . . . . . . . . . . . . . . . . 91
Steering Wheel Controls . . . . . . . . . . . 138
Stop/Start System . . . . . . . . . . . . . . . . . . 221
Storage Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . 87
Center Console . . . . . . . . . . . . . . . . . . . . . 86
Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Roof Rack System . . . . . . . . . . . . . . . . . 88
Sunglasses . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Umbrella . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Storage Compartments . . . . . . . . . . . . . . 84
Storing the Tire Sealant and Compressor Kit . . . . . . . . . . . . . . . . . . . . 336
Struts Gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Stuck Vehicle . . . . . . . . . . . . . . . . . . . . . . . 214
Summer Tires . . . . . . . . . . . . . . . . . . . . . . . 310
Sun Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Sunglass Storage . . . . . . . . . . . . . . . . . . . . . 85
Sunroof . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 155
System Engine Air Filter Life . . . . . . . . . . . . . 289
Forward Collision Alert (FCA) . . . . 258
Global Positioning . . . . . . . . . . . . . . . . 163
Infotainment . . . . . . . . . . . . . . . . . . . . . . 386
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Roof Rack . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Systems Driver Assistance . . . . . . . . . . . . . . . . . 248
T
Tachometer . . . . . . . . . . . . . . . . . . . . . . . . . 102
Teen Driver . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Text Telephone (TTY) Users . . . . . . . 376
Theft-Deterrent Systems . . . . . . . . . . . . 27
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . 27
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308 All-Season . . . . . . . . . . . . . . . . . . . . . . . . . 309
Buying New Tires . . . . . . . . . . . . . . . . . 325
Chains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 328
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Compact Spare . . . . . . . . . . . . . . . . . . . . 341
Designations . . . . . . . . . . . . . . . . . . . . . . 312
Different Size . . . . . . . . . . . . . . . . . . . . . . 326
If a Tire Goes Flat . . . . . . . . . . . . . . . . 329