climate control CADILLAC XT6 2021 Owner's Guide

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
DRIVING AND OPERATING 219
.Become familiar with vehicle
features before driving, such as
programming favorite radio stations
and adjusting climate control and
seat settings. Program all trip
information into any navigation
device prior to driving.
.Wait until the vehicle is parked to
retrieve items that have fallen to
the floor.
.Stop or park the vehicle to tend to
children.
.Keep pets in an appropriate carrier
or restraint.
.Avoid stressful conversations while
driving, whether with a passenger or
on a cell phone.
{Warning
Taking your eyes off the road too
long or too often could cause a
crash resulting in injury or death.
Focus your attention on driving.
Refer to the infotainment section for
more information on using that
system and the navigation system,
if equipped, including pairing and
using a cell phone.
Defensive Driving
Defensive driving means “always
expect the unexpected.” The first step
in driving defensively is to wear the
seat belt. See Seat Belts053.
.Assume that other road users
(pedestrians, bicyclists, and other
drivers) are going to be careless and
make mistakes. Anticipate what
they may do and be ready.
.Allow enough following distance
between you and the driver in front
of you.
.Focus on the task of driving.
Impaired Driving
Death and injury associated with
impaired driving is a global tragedy.
{Warning
Drinking alcohol or taking drugs
and then driving is very dangerous.
Your reflexes, perceptions,
attentiveness, and judgment can be
affected by even a small amount of
alcohol or drugs. You can have a
(Continued)
Warning (Continued)
serious—or even fatal —collision
if you drive after drinking or taking
drugs.
Do not drive while under the
influence of alcohol or drugs,
or ride with a driver who has been
drinking or is impaired by drugs.
Find alternate transportation home;
or if you are with a group, designate
a driver who will remain sober.
Control of a Vehicle
Braking, steering, and accelerating are
important factors in helping to control
a vehicle while driving.
Braking
Braking action involves perception
time and reaction time. Deciding to
push the brake pedal is perception
time. Actually doing it is
reaction time.
Average driver reaction time is about
three-quarters of a second. In that
time, a vehicle moving at 100 km/h

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
DRIVING AND OPERATING 227
begins to fall. Avoid driving on wet ice
or in freezing rain until roads can be
treated.
For Slippery Road Driving:
.Accelerate gently. Accelerating too
quickly causes the wheels to spin
and makes the surface under the
tires slick.
.Turn on Traction Control. See
Traction Control/Electronic Stability
Control0248.
.Antilock Brake System (ABS)
improves vehicle stability during
hard stops, but the brakes should be
applied sooner than when on dry
pavement. See Antilock Brake System
(ABS) 0246.
.Allow greater following distance and
watch for slippery spots. Icy patches
can occur on otherwise clear roads
in shaded areas. The surface of a
curve or an overpass can remain icy
when the surrounding roads are
clear. Avoid sudden steering
maneuvers and braking while
on ice.
.Turn off cruise control.
.Select All-Wheel Drive (AWD) mode.
See Driver Mode Control 0250 and
All-Wheel Drive 0245.
Blizzard Conditions
Stop the vehicle in a safe place and
signal for help. Stay with the vehicle
unless there is help nearby. If possible,
use Roadside Assistance. See Roadside
Service 0401. To get help and keep
everyone in the vehicle safe:
.Turn on the hazard warning
flashers.
.Tie a red cloth to an outside mirror.
{Warning
Snow can trap engine exhaust
under the vehicle. This may cause
exhaust gases to get inside. Engine
exhaust contains carbon monoxide
(CO), which cannot be seen or
smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:
.Clear snow from the base of the
vehicle, especially any blocking
the exhaust pipe.
(Continued)
Warning (Continued)
.Open a window about 5 cm (2 in)
on the vehicle side that is away
from the wind, to bring in
fresh air.
.Fully open the air outlets on or
under the instrument panel.
.Adjust the climate control
system to circulate the air inside
the vehicle and set the fan speed
to the highest setting. See
“Climate Control Systems.”
For more information about CO, see
Engine Exhaust 0239.
To save fuel, run the engine for short
periods to warm the vehicle and then
shut the engine off and partially close
the window. Moving about to keep
warm also helps.
If it takes time for help to arrive,
when running the engine, push the
accelerator pedal slightly so the
engine runs faster than the idle speed.
This keeps the battery charged to
restart the vehicle and to signal for
help with the headlamps. Do this as
little as possible, to save fuel.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
DRIVING AND OPERATING 235
Auto Engine Stop/Start
When the brakes are applied and the
vehicle is at a complete stop, the
engine may turn off. When stopped,
the tachometer displays AUTO STOP.
SeeTachometer 0112. When the brake
pedal is released or the accelerator
pedal is pressed, the engine will
restart.
To maintain vehicle performance,
other conditions may cause the engine
to automatically restart before the
brake pedal is released.
Auto Stops may not occur and/or auto
restarts may occur because:
.The climate control settings require
the engine to be running to cool or
heat the vehicle interior.
.The vehicle battery charge is low.
.The vehicle battery has recently
been disconnected.
.Minimum vehicle speed has not
been reached since the last
Auto Stop.
.The accelerator pedal is pressed.
.The engine or transmission is not at
the required operating temperature.
.The outside temperature is not in
the required operating range.
.The vehicle transmission is shifted
out of D (Drive) to any gear other
than P (Park).
.Tow/Haul Mode or other driver
modes have been selected.
.The vehicle is on a steep hill or
grade.
.The driver door has been opened or
the driver seat belt has been
unbuckled.
.The hood has been opened.
.The Auto Stop has reached the
maximum allowed time. Auto Stop Disable Switch
The automatic engine Stop/Start
feature can be disabled and enabled
by touching the
hsymbol. Auto Stop
is enabled each time you start the
vehicle.
When the light next to the
his
illuminated, the system is enabled.
Engine Heater
The engine heater, if available, can
help in cold weather conditions at or
below −18 °C (0 °F) for easier starting
and better fuel economy during
engine warm-up. Plug in the engine
heater at least four hours before

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
DRIVING AND OPERATING 291
If equipped with Lane Change Alert
(LCA), the LCA 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.
If equipped with Rear Cross Traffic
Alert (RCTA), use caution while
backing up when towing a trailer, as
the RCTA detection zones that extend
out from the back of the vehicle do
not move further back when a trailer
is towed.
{Warning
To prevent serious injury or death
from carbon monoxide (CO), when
towing a trailer:
.Do not drive with the liftgate,
trunk/hatch, or rear-most
window open.
.Fully open the air outlets on or
under the instrument panel.(Continued)
Warning (Continued)
.Adjust the climate control
system to a setting that brings in
only outside air. See“Climate
Control Systems” in the Index.
For more information about carbon
monoxide, see Engine Exhaust
0 239.
Towing a trailer requires experience.
The combination of the vehicle and
trailer is longer and not as responsive
as the vehicle itself. Get used to the
handling and braking of the
combination by driving on a level road
surface before driving on public roads.
The trailer structure, the tires, and the
brakes must be all be rated to carry
the intended cargo. Inadequate trailer
equipment can cause the combination
to operate in an unexpected or unsafe
manner. Before driving, inspect all
trailer hitch parts and attachments,
safety chains, electrical connectors,
lamps, tires, and mirrors. See Towing
Equipment 0297. If the trailer has
electric brakes, start the combination
moving and then manually apply the trailer brake controller to check the
trailer brakes work. During the trip,
occasionally check that the cargo and
trailer are secure and that the lamps
and any trailer brakes are working.
Towing with a Stability Control
System
When towing, the stability control
system might be heard. The system
reacts to vehicle movement caused by
the trailer, which mainly occurs
during cornering. This is normal when
towing heavier trailers.
Following Distance
Stay at least twice as far behind the
vehicle ahead as you would when
driving without a trailer. This can help
to avoid heavy braking and sudden
turns.
Passing
More passing distance is needed when
towing a trailer. The combination of
the vehicle and trailer will not
accelerate as quickly and is much
longer than the vehicle alone. It is
necessary to go much farther beyond

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/8/21
VEHICLE CARE 355
also conform to federal safety
requirements and additional
General Motors Tire Performance
Criteria (TPC) standards.
Quality grades can be found where
applicable on the tire sidewall
between tread shoulder and
maximum section width. For
example:
Treadwear 200 Traction AA
Temperature A
All Passenger Car Tires Must
Conform to Federal Safety
Requirements In Addition To
These Grades.
Treadwear
The treadwear grade is a
comparative rating based on the
wear rate of the tire when tested
under controlled conditions on a
specified government test course.
For example, a tire graded
150 would wear one and one-half
(1½) times as well on the
government course as a tiregraded 100. The relative
performance of tires depends
upon the actual conditions of
their use, however, and may
depart significantly from the norm
due to variations in driving habits,
service practices and differences
in road characteristics and
climate.
Traction
The traction grades, from highest
to lowest, are AA, A, B, and C.
Those grades represent the tire's
ability to stop on wet pavement as
measured under controlled
conditions on specified
government test surfaces of
asphalt and concrete. A tire
marked C may have poor traction
performance. Warning: The
traction grade assigned to this tire
is based on straight-ahead braking
traction tests, and does not
include acceleration, cornering,
hydroplaning, or peak traction
characteristics.Temperature
The temperature grades are A (the
highest), B, and C, representing
the tire's resistance to the
generation of heat and its ability
to dissipate heat when tested
under controlled conditions on a
specified indoor laboratory test
wheel. Sustained high temperature
can cause the material of the tire
to degenerate and reduce tire life,
and excessive temperature can
lead to sudden tire failure. The
grade C corresponds to a level of
performance which all passenger
car tires must meet under the
Federal Motor Safety Standard
No. 109. Grades B and A represent
higher levels of performance on
the laboratory test wheel than the
minimum required by law.
Warning: The temperature grade
for this tire is established for a tire
that is properly inflated and not
overloaded. Excessive speed,
underinflation, or excessive

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/9/21
420 INDEX
Child RestraintsInfants and Young Children . . . . . . . 73
Lower Anchors and Tethers
for Children . . . . . . . . . . . . . . . . . . . . . . . 79
Older Children . . . . . . . . . . . . . . . . . . . . . 72
Securing . . . . . . . . . . . . . . . . . . . . . . . . 87, 89
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 328
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . 370
Interior Care . . . . . . . . . . . . . . . . . . . . . . 374
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 208
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Cluster, Instrument . . . . . . . . . . . . . . . . . 109
Collision Damage Repair . . . . . . . . . . . 404
Compact Spare Tire . . . . . . . . . . . . . . . . . 364
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Connected Services
Connections . . . . . . . . . . . . . . . . . . . . . . . 416
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 417
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 415
Connections Connected Services . . . . . . . . . . . . . . . 416 Control
Traction and Electronic
Stability . . . . . . . . . . . . . . . . . . . . . . . . . . 248
Control of a Vehicle . . . . . . . . . . . . . . . . 219
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . 149
Convenience Net . . . . . . . . . . . . . . . . . . . . . 98
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 30
Coolant
Engine Temperature Gauge . . . . . . 113
Engine Temperature WarningLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Cooling . . . . . . . . . . . . . . . . . . . . . . . . .208, 213
Cooling System . . . . . . . . . . . . . . . . . . . . . 316
Cornering Lamps . . . . . . . . . . . . . . . . . . . 143
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 143
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 403
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Coverage Explanations . . . . . . . . . . . . . 175
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 251
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Cruise Control, Adaptive . . . . . . . . . . . 254
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Customer Assistance . . . . . . . . . . . . . . . 400 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399
Text Telephone (TTY) Users . . . . . 400 Customer Information
Publications Ordering
Information . . . . . . . . . . . . . . . . . . . . . . 406
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 397
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 408
D
Damage Repair, Collision . . . . . . . . . . . 404
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 409
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
Data Recorders, Event . . . . . . . . . . . . . . 408
Database Coverage Explanations . . . . . . . . . . . . . . . . . . . . . . 175
Daytime Running Lamps (DRL) . . . 141
Defensive Driving . . . . . . . . . . . . . . . . . . . 219
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 18
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Diagnostics
Connected Services . . . . . . . . . . . . . . . 417
Distracted Driving . . . . . . . . . . . . . . . . . . 218
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 143
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . 124
Delayed Locking . . . . . . . . . . . . . . . . . . . 18
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/9/21
INDEX 421
Door (cont'd)Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 18
Drive Belt Routing, Engine . . . . . . . . . 396
Drive Systems All-Wheel Drive . . . . . . . . . . . . . 245, 324
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196
Driver Assistance Systems . . . . . . . . . 263
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . . 124
Driver Mode Control . . . . . . . . . . . . . . . . 250
Driver Mode Control Light . . . . . . . . . 121
Driving Assistance Systems . . . . . . . . . . . . . . . 272
Better Fuel Economy . . . . . . . . . . . . . 218
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 290
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Hill and Mountain Roads . . . . . . . . 226
If the Vehicle is Stuck . . . . . . . . . . . . 228
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Loss of Control . . . . . . . . . . . . . . . . . . . . 221
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
Off-Road Recovery . . . . . . . . . . . . . . . . 221
Vehicle Load Limits . . . . . . . . . . . . . . 228
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 225
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226 Dual Automatic Climate
Control System . . . . . . . . . . . . . . . . . . . . 208
E
Electric Brake Boost . . . . . . . . . . . . . . . . 246
Electric Parking Brake . . . . . . . . . . . . . . 246
Electric Parking Brake Light . . . . . . . 117
Electrical Equipment, Add-On . . . . . 301
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Fuses and Circuit Breakers . . . . . . . 328
Instrument Panel Fuse Block . . . . 332
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 411
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 315
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 115
Compartment Overview . . . . . . . . . . 308
Coolant Temperature Gauge . . . . . 113
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 121
Cooling System . . . . . . . . . . . . . . . . . . . 316
Drive Belt Routing . . . . . . . . . . . . . . . . 396 Engine (cont'd)
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 235
Oil Life System . . . . . . . . . . . . . . . . . . . . 313
Oil Pressure Light . . . . . . . . . . . . . . . . . 122
Overheating . . . . . . . . . . . . . . . . . . . . . . . 320
Power Messages . . . . . . . . . . . . . . . . . . 130
Running While Parked . . . . . . . . . . . 239
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Engine Air Filter Life System . . . . . . 314
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 144
Equipment, Towing . . . . . . . . . . . . . . . . . 297
Event Data Recorders . . . . . . . . . . . . . . 408
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 145
Extended Parking . . . . . . . . . . . . . . . . . . . 239
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 59
Exterior Lamp Controls . . . . . . . . . . . . 139
Exterior Lamps Off Reminder . . . . . . 141
Exterior Lighting Battery Saver . . . . 145
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 315
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 141
Flashers, Hazard Warning . . . . . . . . . . 142
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 357 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 358
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 377

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-14574701) -
2021 - CRC - 2/9/21
INDEX 425
Online Owner Center . . . . . . . . . . . . . . . 400
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409
OnStar Additional Information . . . . 411
OnStar Emergency . . . . . . . . . . . . . . . . . . 411
OnStar Overview . . . . . . . . . . . . . . . . . . . . 410
OnStar Security . . . . . . . . . . . . . . . . . . . . . 411
OnStar System . . . . . . . . . . . . . . . . .161, 172
OutletsPower . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Overheating, Engine . . . . . . . . . . . . . . . . 320
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147 Instrument Panel . . . . . . . . . . . . . . . . . . . . 4
P
ParkShifting Into . . . . . . . . . . . . . . . . . . . . . . 237
Shifting Out of . . . . . . . . . . . . . . . . . . . . 238
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Parking Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 324
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 239
Over Things That Burn . . . . . . . . . . . 238
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 264
Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 114 Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
Passenger Sensing System . . . . . . . . . . 66
Pedestrian Ahead Indicator . . . . . . . . 120
Perchlorate Materials Requirements, California . . . . . . . . . 305
Performance Shifting Light . . . . . . . . 119
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Phone Apple CarPlay and
Android Auto . . . . . . . . . . . . . . . . . . . . 186
Bluetooth . . . . . . . . . . . . . . . . . . . . 181, 182
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Positioning
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Protection, Battery . . . . . . . . . . . . . . . . 145
Retained Accessory (RAP) . . . . . . . . 237
Seat Adjustment . . . . . . . . . . . . . . . . . . . 41
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Pregnancy, Using Seat Belts . . . . . . . . . 59
Privacy Vehicle Data Recording . . . . . . . . . . 408 Problems with Route Guidance . . . . 174
Program
Courtesy Transportation . . . . . . . . . 403
Prohibited Fuels . . . . . . . . . . . . . . . . . . . . 287
Proposition 65 Warning,
California . . . . . . . . . . . . . . .304, 323, 364, Back Cover
Publication Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . 406
R
RadioHD Radio Technology . . . . . . . . . . . . 155
Radio Data System (RDS) . . . . . . . . . . 155
Radio Frequency Statement . . . . . . . . 406
Radio Reception . . . . . . . . . . . . . . . . . . . . 156
Radios AM-FM Radio . . . . . . . . . . . . . . . . . . . . . 153
Satellite . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Reading Lamps . . . . . . . . . . . . . . . . . . . . . 144
Rear Camera Mirror . . . . . . . . . . . . . . . . . 32
Rear Climate Control System . . . . . . 213
Rear Pedestrian Alert . . . . . . . . . . . . . . . 271
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Rear Storage . . . . . . . . . . . . . . . . . . . . . . . . . 93
Rear Vision Camera (RVC) . . . . . . . . . 264