
Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
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324 Vehicle Care
Caution (Continued)
tire dressing, always wipe off any
overspray from all painted surfaces on
the vehicle.
Wheels and Wheel Trim
Use a soft, clean cloth with mild soap and
water to clean the wheels. After rinsing
thoroughly with clean water, dry with a
soft, clean towel. A wax may then be
applied.
Caution
Chrome wheels and chrome wheel trim
may be damaged if the vehicle is not
washed after driving on roads that have
been sprayed with magnesium chloride or
calcium chloride. These are used on roads
for conditions such as dust and ice.
Always wash the chrome with soap and
water after exposure.
Caution
To avoid surface damage on wheels and
wheel trim, do not use strong soaps,
chemicals, abrasive polishes, cleaners,
(Continued)
Caution (Continued)
or brushes. Use only GM approved
cleaners. Do not drive the vehicle through
an automatic car wash that uses silicon
carbide tire/wheel cleaning brushes.
Damage could occur and the repairs
would not be covered by the vehicle
warranty.
Brake System
Visually inspect brake lines and hoses for
proper hook-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear
and rotors for surface condition. Inspect
drum brake linings/shoes for wear or cracks.
Inspect all other brake parts.
Steering, Suspension, and Chassis
Components
Visually inspect steering, suspension, and
chassis components for damaged, loose,
or missing parts or signs of wear at least
once a year.
Inspect power steering for proper
attachment, connections, binding, leaks,
cracks, chafing, etc.Visually check constant velocity joint boots
and axle seals for leaks.
Body Component Lubrication
Lubricate all key lock cylinders, hood hinges,
liftgate hinges, and the steel fuel door
hinges, unless the components are plastic.
Applying silicone grease on weatherstrips
with a clean cloth will make them last
longer, seal better, and not stick or squeak.
Underbody Maintenance
At least twice a year, spring and fall, use
plain water to flush any corrosive materials
from the underbody. Take care to
thoroughly clean any areas where mud and
other debris can collect.
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 fluid. Contaminated
fluid will decrease the life of the transfer
case and/or axles and should be replaced.
Sheet Metal Damage
If the vehicle is damaged and requires sheet
metal repair or replacement, make sure the
body repair shop applies anti-corrosion
material to parts repaired or replaced to
restore corrosion protection.

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Service and Maintenance 329
Service and Maintenance
General Information
General Information . . . . . . . . . . . . . . . . . . . 329
Maintenance Schedule
Maintenance Schedule . . . . . . . . . . . . . . . . 330
Multi-Point Vehicle Inspection (MPVI)
Multi-Point VehicleInspection (MPVI) . . . . . . . . . . . . . . . . . . . . 332
Special Application Services
Special Application Services . . . . . . . . . . . . 333
Recommended Fluids, Lubricants, and
Parts
Recommended Fluids and
Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Maintenance Replacement Parts . . . . . . . 335
Maintenance Records
Maintenance Records . . . . . . . . . . . . . . . . . . 336
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 keep
the vehicle in good working condition,
improves fuel economy, and reduces vehicle
emissions.

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332 Service and Maintenance
suitable service maintenance intervals for
your vehicle, please contact your
authorized GM Dealer.
Extreme service is for vehicles mainly
driven off-road in four-wheel drive or used
in farming, mining, forestry, or snow
plowing.
Additional Required Services—Severe
Service
Every 72 000 km (45,000 mi)
.Change automatic transmission fluid.
Every 120 000 km (75,000 mi)
.Change rear axle fluid, if equipped with
AWD. 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.
Owner Checks and Services
Every Five Years
.Replace brake fluid every five years. See
Brake Fluid 0273. Every Seven Years
.Replace Air Conditioning Desiccant 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.
Multi-Point Vehicle
Inspection (MPVI)
A Multi Point Vehicle Inspection (MPVI)
completed by a GM dealer technician is a
maintenance assessment of your vehicle.
The benefit of the MPVI is to identify and
inform the customer of service items that
require immediate attention and those that
may require attention in the future.
The technician will perform the following
checks on your vehicle. For a complete list
of checks, inspections, and services, see your
dealer.
Some items may not apply to your vehicle
and/or region.
Diagnostics
.OnStar active, if equipped
.Service history/recall check
Engine Oil and Filter
.Engine oil
.Oil life monitor
‐
Reset oil life monitor
Exterior Lights
.Visual inspection
Windshield and Wipers
.Visual inspection
Battery
.Battery visual inspection
.Battery test results
.Battery cables and connections
Systems, Fluids, and Visible Leak
Inspection
.Engine oil
.Transmission
.Drive axle
.Transfer case
.Engine cooling system
.Power steering, if equipped
.Fuel system
.Windshield washer fluid

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Service and Maintenance 333
Tire Inspection
.Tire pressure, tread depth, and wear
.Rotation, if applicable
.Alignment check, optional
.Reset tire pressure monitor
.Check tire sealant expiration date,
if equipped
.Check spare tire, if equipped
Brakes
.Check brake system
Visible and Functional Inspections
.Seat belt components
.Exhaust system
.Accelerator pedal
.Passenger compartment air filter,
if equipped
.Engine air filter
.Hoses
.Belts
.Shocks and struts
.Steering components
.Axle boots or driveshaft and u-joints
.Compartment lift struts, if equipped
.Floor mats secured, no interference with
pedals
.Horn
.Ignition lock, if equipped
.Starter switch
.Evaporative control system
Lubricate
.Chassis components
Special Application Services
.Severe Commercial Use Vehicles Only:
Lubricate chassis components every oil
change.
.Have underbody flushing service
performed. See "Underbody Maintenance"
in Exterior Care 0321.

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334 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name or specification, including fluids or lubricants not listed here, can be obtained from your dealer.Usage Fluid/Lubricant
Automatic Transmission DEXRON-VI Automatic Transmission Fluid. Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling
System 0268.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco
dexos1 full synthetic is recommended. See Engine Oil0264.
Hood Latch Assembly, Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubriplate Lubricant Aerosol or lubricant meeting requirements of NLGI #2, Category LB
or GC-LB.
Hydraulic Brake System DOT 4 Hydraulic Brake Fluid.
Key Lock Cylinders, Hood and Door Hinges Multi-Purpose Lubricant, Superlube. See your dealer. Front Axle/Rear Axle See your dealer.
Transfer Case (All-Wheel Drive) Transfer Case Fluid. See your dealer. Windshield Washer Automotive windshield washer fluid that meets regional freeze protection requirements.

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348 Customer Information
with that company. In such cases, you can
have control of the repair and parts choices
as long as the cost stays within reasonable
limits.
Publication Ordering Information
Service Manuals
Service manuals have the diagnosis and
repair information on the engine/propulsion,
transmission, axle, suspension, brakes,
electrical system, steering system, body, etc.
Customer Literature
Owner’s manuals are written specifically for
owners and are intended to provide basic
operational information about the vehicle.
The owner’s manual includes the
Maintenance Schedule for all models.
Customer literature publications available for
purchase include owner’s manuals, warranty
manuals, and portfolios. Portfolios include an
owner’s manual, warranty manual,
if applicable, and zip lock bag or pouch.
Current and Past Models
Service manuals and customer literature are
available for many GM vehicles.To check availability and to order, call
1-800-551-4123 Monday–Friday, 8:00 a.m.–
6:00 p.m. Eastern Time
For credit card orders only (VISA,
MasterCard, or Discover), see Helm, Inc. at:
www.helminc.com.
To order by mail, write to:
Helm, Incorporated
Attention: Customer Service
47911 Halyard Drive
Plymouth, MI 48170
Make checks payable in U.S. funds.
Radio Frequency Statement
This vehicle uses license-exempt transmitters
/ receivers / systems that operate on a
radio frequency that complies with Part 15/
Part 18 of the Federal Communications
Commission (FCC) rules and with Innovation,
Science and Economic Development (ISED)
Canada's license-exempt RSS(s) / RSP-100 /
ICES-GEN.
Operation is subject to the following two
conditions:
1. The device may not cause harmful interference. 2. The device must accept any interference
received, including interference that may
cause undesired operation of the device.
Changes or modifications to any of these
systems by other than an authorized service
facility could void authorization to use this
equipment.
Reporting Safety Defects
Reporting Safety Defects to the
United States Government
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you should
immediately inform the National
Highway Traffic Safety Administration
(NHTSA) in addition to notifying General
Motors.
If NHTSA receives similar complaints, it
may open an investigation, and if it
finds that a safety defect exists in a
group of vehicles, it may order a recall
and remedy campaign. However, NHTSA
cannot become involved in individual
problems between you, your dealer,
or General Motors.

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350 Customer Information
The protection of vehicle electronics systems
and customer data from unauthorized
outside electronic access or control is
important to GM. GM maintains appropriate
security standards, practices, guidelines and
controls aimed at defending the vehicle and
the vehicle service ecosystem against
unauthorized electronic access, detecting
possible malicious activity in related
networks, and responding to suspected
cybersecurity incidents in a timely,
coordinated and effective manner. Security
incidents could impact your safety or
compromise your private data. To minimize
security risks, please do not connect your
vehicle electronic systems to unauthorized
devices or connect your vehicle to any
unknown or untrusted networks (such as
Bluetooth, WIFI or similar technology). In
the event you suspect any security incident
impacting your data or the safe operation of
your vehicle, please stop operating your
vehicle and contact your dealer.
Event Data Recorders
This vehicle is equipped with an Event Data
Recorder (EDR). The main purpose of an EDR
is to record, in certain crash or near
crash-like situations, such as an air bag
deployment or hitting a road obstacle, datathat will assist in understanding how a
vehicle’s systems performed. The EDR is
designed to record data related to vehicle
dynamics and safety systems for a short
period of time, typically 30 seconds or less.
The EDR in this vehicle is designed to record
such data as:
.How various systems in your vehicle were
operating;
.Whether or not the driver and passenger
safety belts were buckled/fastened;
.How far (if at all) the driver was
depressing the accelerator and/or brake
pedal; and,
.How fast the vehicle was traveling.
These data can help provide a better
understanding of the circumstances in which
crashes and injuries occur.
Note
EDR data are recorded by your vehicle only
if a non-trivial crash situation occurs; no
data are recorded by the EDR under normal
driving conditions and no personal data
(e.g., name, gender, age, and crash location)
are recorded. However, other parties, such
as law enforcement, could combine the EDR data with the type of personally identifying
data routinely acquired during a crash
investigation.
To read data recorded by an EDR, special
equipment is required, and access to the
vehicle or the EDR is needed. In addition to
the vehicle manufacturer, other parties, such
as law enforcement, that have the special
equipment, can read the information if they
have access to the vehicle or the EDR.
GM will not access these data or share it
with others except: with the consent of the
vehicle owner or, if the vehicle is leased,
with the consent of the lessee; in response
to an official request by police or similar
government office; as part of GM's defense
of litigation through the discovery process;
or, as permitted by law. Data that GM
collects or receives may also be used for GM
research needs or may be made available to
others for research purposes, where a need
is shown and the data is not tied to a
specific vehicle or vehicle owner.
OnStar
If the vehicle is equipped with OnStar and
has an active service plan, additional data
may be collected and transmitted through
the OnStar system. This includes information

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Index 361
Antilock Brake System (ABS) . . . . . . . . . . . . . .187Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 105
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325
Apple CarPlay and Android Auto . . . . . . . . . 148
Assistance Program, Roadside . . . . . . . . . . . . 343
Assistance Systems Advanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Automatic EmergencyBraking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 235
Automatic Parking Assist (APA) . . . . . . . . 228
Blind Zone Alert (SBZA) . . . . . . . . . . . . . . . . 240
Blind Zone Steering (BZSA) . . . . . . . . . . . . 243
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Front Pedestrian Braking (FPB) . . . . . . . . . 238
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 241
Lane Keep Assist (LKA) . . . . . . . . . . . . . . . . . 245
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Parking and Backing . . . . . . . . . . . . . . . . . . . 224
Rear Cross Traffic Alert (RCTA) . . . . . . . . . 232
Rear Pedestrian Alert . . . . . . . . . . . . . . . . . . 231
Rear Vision Camera (RVC) . . . . . . . . . . . . . . 225
Reverse Automatic Braking (RAB) . . . . . . 230
Surround Vision System . . . . . . . . . . . . . . . 225
Traffic Sign . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243 Audio
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Auto Stop Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . . . . . . 28
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Emergency Braking (AEB) DisabledLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Headlamp System . . . . . . . . . . . . . . . . . . . . . 125
Parking Assist (APA) . . . . . . . . . . . . . . . . . . . 228
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . 266
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 185
Avoiding Untrusted Media Devices . . . . . . . .138
B
Battery
Exterior Lighting Battery Saver . . . . . . . . 129
Power Protection . . . . . . . . . . . . . . . . . . . . . . 129
Battery - North America . . . . . . . . . . . . . 274, 315
Blade Replacement, Wiper . . . . . . . . . . . . . . . 275
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 144, 145
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273 Brake (cont'd)
System Warning Light . . . . . . . . . . . . . . . . . 104
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
Electric Brake Boost . . . . . . . . . . . . . . . . . . . . 187
Electric Parking Brake . . . . . . . . . . . . . . . . . . 187
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Automatic Emergency (AEB) . . . . . . . . . . . 235
Front Pedestrian (FPB) System . . . . . . . . . 238
Reverse Automatic . . . . . . . . . . . . . . . . . . . . . 230
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . . 173
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . 278
Back-up Lamps . . . . . . . . . . . . . . . . . . . . . . . . . 278
Front Turn Signal Lamps . . . . . . . . . . . . . . . 278
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 277
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 299
C
Calibration Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
California Perchlorate Materials Requirements . . . 261
California Proposition 65 Warning . . . . . 1, 315
Camera Rear Vision (RVC) . . . . . . . . . . . . . . . . . . . . . . 225
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . .2