brake fluid CADILLAC XT6 2023 User Guide

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
384 Vehicle Care
Brake Fluid
The brake master cylinder
reservoir is filled with GM
approved DOT 4 brake fluid as
indicated on the reservoir cap.
See Engine Compartment
Overview0367 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 (Continued)
Warning (Continued)
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 0136.
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
0 454.
What to Add
Use only GM approved DOT 4
brake fluid from a clean, sealed
container. See Recommended
Fluids and Lubricants 0458.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 385
{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.
Battery - North
America
The original equipment battery
is maintenance free. Do not
remove the cap and do not
add fluid.Refer to the replacement
number on the original battery
label when a new battery is
needed. For replacement of
the battery, see your dealer.
The vehicle has an Absorbent
Glass Mat (AGM) 12-volt
battery. Installation of a
standard 12-volt battery will
result in reduced 12-volt
battery life.
When using a 12-volt battery
charger on the 12-volt AGM
battery, some chargers have
an AGM battery setting on the
charger. If available, use the
AGM setting on the charger,
to limit charge voltage to
14.8 volts.
{Warning
WARNING:
Battery posts,
terminals and related
accessories can expose you
to chemicals including lead
and lead compounds, which
are known to the State of
(Continued)
Warning (Continued)
California to cause cancer
and birth defects or other
reproductive harm. Wash
hands after handling. For
more information go to
www.P65Warnings.ca.gov.
See California Proposition
65 Warning 01.
Stop/Start System
This vehicle has a Stop/Start
system to shut off the engine
to help conserve fuel. See
Stop/Start System 0259.
Vehicle Storage
{Warning
Batteries have acid that can
burn you and gas that can
explode. You can be badly
hurt if you are not careful.
Always wear eye protection.
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 445
Caution
To avoid surface damage on
wheels and wheel trim, do
not use strong soaps,
chemicals, abrasive polishes,
cleaners, 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 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 electrical connections,
binding, cracks, chafing, etc.
Visually check constant
velocity joint boots and axle
seals for leaks.
Body Component
Lubrication
Lubricate all key lock cylinders,
door hinges, 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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
452 Service and Maintenance
Service and
Maintenance
General Information
General Information . . . . . . 452
Maintenance Schedule
MaintenanceSchedule . . . . . . . . . . . . . . . . . . . 454
Multi-Point Vehicle
Inspection (MPVI)
Multi-Point VehicleInspection (MPVI) . . . . . . . . 456
Special Application
Services
Special ApplicationServices . . . . . . . . . . . . . . . . . . . . 457
Recommended Fluids,
Lubricants, and Parts
Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . 458
Maintenance Replacement Parts . . . . . . 459
Maintenance Records
Maintenance Records . . . . 461
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
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
456 Service and Maintenance
conditions the indicator may
come on before 12 000 km
(7,500 mi).
* Footnote: Under extreme
driving conditions listed
above, it may be necessary
to replace your spark plugs
at more frequent intervals.
For further assistance in
determining the most
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 75 000 km
(120,000 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
0
384.
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.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Service and Maintenance 457
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
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 0440.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
458 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. Chassis Lubrication Lubricant meeting requirements of NLGI #2, Category LB or GC-LB. See your dealer.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant. See Cooling System 0376.
Engine Oil Engine oil meeting the dexos1 specification of the proper SAE viscosity grade. ACDelco dexos1 full synthetic is recommended.
See Engine Oil0370.
Fuel Additive Fuel System Treatment PLUS or equivalent.
Hood and Door Hinges, Key Lock Cylinders Multi-Purpose Lubricant. See your dealer.
Hydraulic Brake System DOT 4 Hydraulic Brake Fluid.
Power Liftgate Actuator Ball Joint, Hood Latch Assembly,
Secondary Latch, Pivots, Spring Anchor, and Release Pawl Lubricant meeting requirements of NLGI #2, Category LB or
GC-LB. See your dealer.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
INDEX 493
Alert (cont'd)Rear Pedestrian . . . . . . . . . . . 324
Side Blind
Zone (SBZA) . . . . . . . . . . . . . . . 336
All-Season Tires . . . . . . . . . . . . . . 401
All-Wheel Drive . . . . . . . . . . . . . . . .273 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
AM-FM Radio . . . . . . . . . . . . . . . . . . . 171
Antenna Multi-band . . . . . . . . . . . . . . . . . . . . 175
Antilock Brake System (ABS) . . . . . . . . . . . . . . . .273
Warning Light . . . . . . . . . . . . . . . 138
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 440
Interior . . . . . . . . . . . . . . . . . . . . . . . . 446
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . 208
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . 470
Assistance Systems
Driving . . . . . . . . . . . . . . . . . . . . . . . . 326
Parking and Backing . . . . . . . 314
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . 179
Automatic
Dimming Mirrors . . . . . . . . . . . . . 38
Door Locks . . . . . . . . . . . . . . . . . . . . 23 Automatic (cont'd)
Emergency
Braking (AEB) . . . . . . . . . . . . . 328
Headlamp System . . . . . . . . . . 159
Parking Assist (APA) . . . . . 320
Transmission . . . . . . . . . . . . . . . 266
Transmission Fluid . . . . . . . . 374
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . 271
Avoiding Untrusted Media Devices . . . . . . . . . . . . . . . 176
B
BatteryExterior LightingBattery Saver . . . . . . . . . . . . . . 163
Power Protection . . . . . . . . . . 163
Battery - North America . . . . . . . . . . . . . . . . 385, 434
Blade Replacement, Wiper . . . . . . . . . . . . . . . . . . . . . . . . . . 386
Bluetooth
Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Overview . . . . . . . . . . . . . . 202, 203
Brake Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . 384
System Warning Light . . . . 136
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 383 Brakes (cont'd)
Antilock . . . . . . . . . . . . . . . . . . . . . . . . 273
Brake Assist . . . . . . . . . . . . . . . . . 276
Electric Brake Boost . . . . . . 273
Electric Parking Brake . . . . 274
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . 241 Automatic
Emergency (AEB) . . . . . . . . 328
Reverse Automatic . . . . . . . 322
Braking System FrontPedestrian (FPB) . . . . . . . . . 330
Break-In, New Vehicle . . . . . . 256
Bulb Replacement Headlamp Aiming . . . . . . . . . . 389
Buying New Tires . . . . . . . . . . . . . 419
C
Calibration
Compass . . . . . . . . . . . . . . . . . . . . . . 122
California Perchlorate Materials
Requirements . . . . . . . . . . . . . 363
California Proposition 65 Warning . . . . . . . . . . . . . . . . 1, 434
Camera
Rear Vision (RVC) . . . . . . . . . . 314
Canadian Vehicle Owners . . . . 2

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
496 INDEX
EmergencyOnStar . . . . . . . . . . . . . . . . . . . . . . . . 483
Engine Air Cleaner/Filter . . . . . . . . . . 375
Air Filter Life System . . . . . 374
Check Light(Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 134
Compartment Overview . . . . . . . . . . . . . . . . . . . 367
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 131
Cooling System . . . . . . . . . . . . 376
Drive Belt Routing . . . . . . . . . 465
Exhaust . . . . . . . . . . . . . . . . . . . . . . 265
Heater . . . . . . . . . . . . . . . . . . . . . . . . . 261
Oil Life System . . . . . . . . . . . . . 373
Oil Pressure Light . . . . . . . . . . 142
Overheating . . . . . . . . . . . . . . . . . . 381
Power Messages . . . . . . . . . . . 151
Running While Parked . . . 266
Starting . . . . . . . . . . . . . . . . . . . . . . 258
Entry Lighting . . . . . . . . . . . . . . . . . 162
Equipment, Towing . . . . . . . . . 356
Event Data Recorders . . . . . 480
Exit Lighting . . . . . . . . . . . . . . . . . . . 163
Extended Parking . . . . . . . . . . . 265
Extender, Seat Belt . . . . . . . . . . . 70 Exterior
Lamp Controls . . . . . . . . . . . . . . 156
Lamps Off Reminder . . . . . . 158
Lighting Battery Saver . . . 163
F
Filter
Engine Air Cleaner . . . . . . . . 375
Flash-to-Pass . . . . . . . . . . . . . . . . . . 158
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . 160
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 425
Changing . . . . . . . . . . . . . . . . . . . . . 426
Floor Mats . . . . . . . . . . . . . . . . . . . . . 450
Fluid AutomaticTransmission . . . . . . . . . . . . . . 374
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 384
Washer . . . . . . . . . . . . . . . . . . . . . . . 382
Folding Mirrors . . . . . . . . . . . . . . . . . 37
Forward Collision Alert (FCA)System . . . . . . . . . . . . . . . . . . . . . . 326
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . 477
Front
Heated and VentilatedSeats . . . . . . . . . . . . . . . . . . . . . . . . . . 54 Front (cont'd)
Pedestrian Braking
(FPB) System . . . . . . . . . . . . . 330
Fuel Additives . . . . . . . . . . . . . . . . . . . . . 344
Economy, Driving forBetter . . . . . . . . . . . . . . . . . . . . . . . 239
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . 346
Filling the Tank . . . . . . . . . . . . . 344
Foreign Countries . . . . . . . . . 344
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Management, Active . . . . . . 264
Prohibited Fuels . . . . . . . . . . . 344
Recommended . . . . . . . . . . . . . 343
Top Tier . . . . . . . . . . . . . . . . . . . . . . 342
Fuses Engine CompartmentFuse Block . . . . . . . . . . . . . . . . . 392
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 391
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . 396
Rear Compartment
Fuse Block . . . . . . . . . . . . . . . . . 398

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
504 INDEX
Trailer (cont'd)Towing . . . . . . . . . . . . . . . . . . . . . . . . . 351
Transmission Automatic . . . . . . . . . . . . . . . . . . . . 266
Fluid, Automatic . . . . . . . . . . . . 374
Transportation Program, Courtesy . . . . . . . . 473
Transporting a Disabled Vehicle . . . . . . . . . 437
Trip Odometer . . . . . . . . . . . . . . . . 130
TTY Users Customer Assistance . . . . 469
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . . . . 160
U
Uniform Tire QualityGrading . . . . . . . . . . . . . . . . . . . . . . . . 421
Universal Remote System . . . . . . . . . . . . . . . . . . . . . . . . . 152
Operation . . . . . . . . . . . . . . . . . . . . . 155
Programming . . . . . . . . . . . . . . . . 152
Updates Map Data . . . . . . . . . . . . . . . . . . . . . 194
Software . . . . . . . . . . . . . . . . . . . . . . . 171
USB Port . . . . . . . . . . . . . . . . . . . . . . . . 176 Using
Infotainment System . . . . . . 168
Navigation System . . . . . . . . . 180
This Manual . . . . . . . . . . . . . . . . . . . . . 2
V
Vehicle
Ahead Indicator . . . . . . . . . . . . . 139
Alarm System . . . . . . . . . . . . . . . . . 33
Canadian Owners . . . . . . . . . . . . . 2
Control . . . . . . . . . . . . . . . . . . . . . . . . 241
Data Recording andPrivacy . . . . . . . . . . . . . . . . . . . . . . 479
Identification Number (VIN) . . . . . . . . . . . . . . 462
Load Limits . . . . . . . . . . . . . . . . . . 252
Messages . . . . . . . . . . . . . . . . . . . . . 151
Positioning . . . . . . . . . . . . . . . . . . . 193
Remote Start . . . . . . . . . . . . . . . . . . 19
Security . . . . . . . . . . . . . . . . . . . . . . . . 33
Speed Messages . . . . . . . . . . . 152
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Vehicle Care Tire Pressure . . . . . . . . . . . . . . . 408
Vehicle Security Steering Column Lock . . . . . 35 Ventilation, Air . . . . . . . . . . . . . . . . 236
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Voice Recognition . . . . . . . . . . . . 195
W
Warning
Brake System Light . . . . . . . . 136
Caution and Danger . . . . . . . . . . 2
Hazard Flashers . . . . . . . . . . . . 160
Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . 126
Washer Fluid . . . . . . . . . . . . . . . . . . 382
Wheels
Alignment and TireBalance . . . . . . . . . . . . . . . . . . . . . 423
Different Size . . . . . . . . . . . . . . . . 421
Replacement . . . . . . . . . . . . . . . . 423
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Where to Put the Restraint . . . . . . . . . . . . . . . . . . . . . . . . 91
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . 41 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Windshield Replacement . . . . . . . . . . . . . . . . 388
Wiper/Washer . . . . . . . . . . . . . . . 118