heating CADILLAC XT6 2023 User Guide

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 381
Engine Overheating
The vehicle has several
indicators to warn of the
engine overheating.
There is an engine coolant
temperature gauge on the
instrument cluster. See Engine
Coolant Temperature Gauge
0131. The vehicle may also
display a message on the
Driver Information
Center (DIC).
If the decision is made not to
lift the hood when this
warning appears, get service
help right away. See Roadside
Assistance Program 0470.
If the decision is made to lift
the hood, make sure the
vehicle is parked on a level
surface. Then check to see if
the engine cooling fan is
running. If the engine is
overheating, the fan should be
running. If it is not, do not
continue to run the engine.
Have the vehicle serviced.
Caution
Do not run the engine if
there is a leak in the engine
cooling system. This can
cause a loss of all coolant
and can damage the system
and vehicle. Have any leaks
fixed right away.
If Steam Is Coming from
the Engine Compartment
{Warning
Steam and scalding liquids
from a hot cooling system
are under pressure. Turning
the pressure cap, even a
little, can cause them to
come out at high speed and
you could be burned. Never
turn the cap when the
cooling system, including the
pressure cap, is hot. Wait for
the cooling system and
pressure cap to cool.
If No Steam Is Coming
from the Engine
Compartment
If an engine overheat warning
is displayed but no steam can
be seen or heard, the problem
may not be too serious.
Sometimes the engine can get
a little too hot when the
vehicle:
.Climbs a long hill on a
hot day.
.Stops after high-speed
driving.
.Idles for long periods in
traffic.
If the overheat warning is
displayed with no sign of
steam: 1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and
to the highest fan speed.
Open the windows as
necessary.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
394 Vehicle Care
Fuses UsageF3 DC DC Transformer 1
F4 –
F5 DC DC Transformer 2
F6 Amplifier 1 F7 Front Blower
F8 Starter 3
F9 –
F10 –
F11 –
F12 Front Wiper
F13 Starter 2
F14 –
F15 Rear Wiper 1
F16 –
F17 –
F18 Automatic Headlamp
Leveling Module
F19 – Fuses Usage
F20 –
F21 –
F22 Electronic Brake Control Module
F23 Parking/Trailer Lamps
F24 Right Trailer Stoplamp/
Turnlamp
F25 Steering Column Lock
F26 –
F27 Left Trailer Stoplamp/
Turnlamp
F28 –
F29 –
F30 Washer Pump F31 –
F32 Headlamp Left
F33 –
F34 Horn Fuses Usage
F35 –
F36 –
F37 Headlamp Right
F38 Not Used/Spare
F39 Transmission Control Module 1
F40 Left Rear Bus Electrical Center/
DC DC Ignition
F41 Instrument Cluster
F42 Heating, Ventilation, and
Air Conditioning/
Central Gateway
Module/Run/
Crank
F43 Head-up Display/ Reflective Light
Auxiliary

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 397
Fuses UsageF2 Diagnostic Link/ Central
Gateway
Module
F3 Electric Steering
Column Lock
F4 –
F5 Logistics
F6 Heating, Ventilation, and
Air Conditioning
F7 Body Control Module 3
F8 –
F9 Right Front Heated Seat
F10 Airbag/ Seat Belt
F11 Driver Monitoring
System Module
F12 Amplifier 2 Fuses Usage
F13 Body Control Module 7
F14 Not Used/Spare
F15 Instrument Panel
Switch Bank
F16 Sunroof F17 Body Control Module 1
F18 Instrument Cluster/
Head-up Display
F19 –
F20 Rear Seat Entertainment
F21 Body Control Module 4
F22 Infotainment/ USB Data/
Aux Jack
F23 Body Control Module 2 Fuses Usage
F24 USB Charger/ Wireless
Charging
F25 Park Assist/ Electronic Shift
Select
F26 CIM F27 Video/Night Vision Module
F28 Heating, Ventilation, and
Air
Conditioning/
Radio Display
F29 Radio
F30 –
F31 Electric Brake Boost
F32 Spare/DC AC inverter
F33 Driver Power Seat
F34 Passenger Power Seat

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 401
the tire warranty and
where to get service. For
additional information refer
to the tire manufacturer.
{Warning
.Poorly maintained and
improperly used tires
are dangerous.
.Overloading the tires
can cause overheating
as a result of too much
flexing. There could be
a blowout and a serious
crash. See Vehicle Load
Limits0252.
.Underinflated tires
pose the same danger
as overloaded tires. The
resulting crash could
cause serious injury.
Check all tires
frequently to maintain
the recommended
(Continued)
Warning (Continued)
pressure. Tire pressure
should be checked
when the tires are cold.
.Overinflated tires are
more likely to be cut,
punctured, or broken by
a sudden impact —such
as when hitting a
pothole. Keep tires at
the recommended
pressure.
.Worn or old tires can
cause a crash. If the
tread is badly worn,
replace them.
.Replace any tires that
have been damaged by
impacts with potholes,
curbs, etc.
.Improperly repaired
tires can cause a crash.
Only your dealer or an
authorized tire service
(Continued)
Warning (Continued)
center should repair,
replace, dismount, and
mount the tires.
.Do not spin the tires in
excess of 56 km/h
(35 mph) on slippery
surfaces such as snow,
mud, ice, etc. Excessive
spinning may cause the
tires to explode.
See Tire Pressure for
High-Speed Operation
0 410 for inflation pressure
adjustment for high-speed
driving.
All-Season Tires
This vehicle may come with
all-season tires. These tires
are designed to provide good
overall performance on most
road surfaces and weather
conditions. Original equipment
tires designed to GM's specific
tire performance criteria have

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
408 Vehicle Care
UTQGS (Uniform Tire
Quality Grading
Standards)
:A tire
information system that
provides consumers with
ratings for a tire's traction,
temperature, and
treadwear. Ratings are
determined by tire
manufacturers using
government testing
procedures. The ratings
are molded into the
sidewall of the tire. See
Uniform Tire Quality
Grading 0421.
Vehicle Capacity Weight
:
The number of designated
seating positions multiplied
by 68 kg (150 lbs) plus the
rated cargo load. See
Vehicle Load Limits 0252. Vehicle Maximum Load on
the Tire
:Load on an
individual tire due to curb
weight, accessory weight,
occupant weight, and cargo
weight.
Vehicle Placard
:A label
permanently attached to a
vehicle showing the
vehicle's capacity weight
and the original equipment
tire size and recommended
inflation pressure. See “Tire
and Loading Information
Label” under Vehicle Load
Limits 0252.
Tire Pressure
Tires need the correct
amount of air pressure to
operate effectively.
{Warning
Neither tire underinflation
nor overinflation is good.
Underinflated tires,
or tires that do not have
enough air, can result in:
.Tire overloading and
overheating, which
could lead to a blowout
.Premature or
irregular wear
.Poor handling
.Reduced fuel economy
for internal combustion
engine vehicles
.Reduced range for
electric vehicles
(Continued)

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
INDEX 497
G
Garage Door Opener . . . . . . . . 152Programming . . . . . . . . . . . . . . . . 152
Gas Strut(s) . . . . . . . . . . . . . . . . . . . 388
Gauges Engine CoolantTemperature . . . . . . . . . . . . . . . 131
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Odometer . . . . . . . . . . . . . . . . . . . . . 130
Speedometer . . . . . . . . . . . . . . . . 130
Tachometer . . . . . . . . . . . . . . . . . . 130
Trip Odometer . . . . . . . . . . . . . . 130
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 126
General Information Service andMaintenance . . . . . . . . . . . . . . 452
Towing . . . . . . . . . . . . . . . . . . . . . . . . 347
Vehicle Care . . . . . . . . . . . . . . . . 363
Global Positioning System (GPS) . . . . . . . . . . . . . . . . 192
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 108
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . 470
Guidance Problems with theRoute . . . . . . . . . . . . . . . . . . . . . . . . . 193
H
Hazard Warning
Flashers . . . . . . . . . . . . . . . . . . . . . . . 160
Head Restraints . . . . . . . . . . . . . . . 47
Head-Up Display (HUD) . . . . . 147
Headlamps Aiming . . . . . . . . . . . . . . . . . . . . . . . . 389
Automatic . . . . . . . . . . . . . . . . . . . . . 159
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . 159
Flash-to-Pass . . . . . . . . . . . . . . . . 158
High-Beam On Light . . . . . . . 143
High/Low Beam Changer . . . . . . . . . . . . . . . . . . . . . 158
Lamps On Reminder . . . . . . . 143
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Rear Seats . . . . . . . . . . . . . . . . . . . . 58
Steering Wheel . . . . . . . . . . . . . 118
Ventilated Front Seats . . . . 54
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . 261
Heating . . . . . . . . . . . . . . . . . . .228, 234
High-Beam On Light . . . . . . . . . 143
High-Speed Operation . . . . . . 410
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . . . 249
Hill Start Assist (HSA) . . . . . . .276 Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118
How to Wear Seat Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . . 63
HVAC . . . . . . . . . . . . . . . . . . . . .228, 234
I
If the System Needs Service . . . . . . . . . . . . . . . . . . . . . . . . . 194
Ignition Positions . . . . . . . . . . . . .257
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 35
Indicator Pedestrian Ahead . . . . . . . . . . 139
Vehicle Ahead . . . . . . . . . . . . . . . 139
Indicators Warning Lights andGauges . . . . . . . . . . . . . . . . . . . . . . . 126
Infants and Young Children, Restraints . . . . . . . . . 86
Information Publication Ordering . . . . . 476
Infotainment Using the System . . . . . . . . . . 168
Infotainment System . . . . . . . . 481
Inspection Multi-Point Vehicle . . . . . . . . 456
Instrument Cluster . . . . . . . . . . . 127

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
500 INDEX
OnStar (cont'd)Overview . . . . . . . . . . . . . . . . . . . . . 482
OnStar Emergency . . . . . . . . . 483
OnStar Security . . . . . . . . . . . . . 484
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Overheating, Engine . . . . . . . . . 381
Overview . . . . . . . . . . . . . . . . . . . . . . . . 165
Instrument Panel . . . . . . . . . . . . . . 5
P
ParkAssist . . . . . . . . . . . . . . . . . . . . 314, 318
Shifting Into . . . . . . . . . . . . . . . . . 263
Shifting Out of . . . . . . . . . . . . . 264
Parking Brake and P (Park)
Mechanism Check . . . . . . . 386
Extended . . . . . . . . . . . . . . . . . . . . 265
Over Things That Burn . . . . . . . . . . . . . . . . . . 264
Parking Assist
Automatic . . . . . . . . . . . . . . . . . . . . 320
Parking or Backing Assistance Systems . . . . . . . 314
Passenger
Airbag StatusIndicator . . . . . . . . . . . . . . . . . . . . . 133 Passenger (cont'd)
Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 237
Sensing System . . . . . . . . . . . . . . 78
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . . . . . . . . . 139
Perchlorate Materials
Requirements,
California . . . . . . . . . . . . . . . . . . . . . 363
Performance Shifting Light . . . . . . . . . . . . . . . . 138
Phone
Apple CarPlay andAndroid Auto . . . . . . . . . . . . . . 208
Bluetooth . . . . . . . . . . . . . 202, 203
Port
USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 193
Power Door Locks . . . . . . . . . . . . . . . . . . . . 23
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 122
Protection, Battery . . . . . . . . 163
RetainedAccessory (RAP) . . . . . . . . . 263
Seat Adjustment . . . . . . . . . . . . . 49
Windows . . . . . . . . . . . . . . . . . . . . . . . 42 Pregnancy, Using Seat
Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Privacy Vehicle DataRecording . . . . . . . . . . . . . . . . . . 479
Problems with Route Guidance . . . . . . . . . . . . . . . . . . . . . . 193
Program CourtesyTransportation . . . . . . . . . . . 473
Prohibited Fuels . . . . . . . . . . . . . 344
Proposition 65 Warning
California . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Proposition 65 Warning, California . . . 434
Publication Ordering
Information . . . . . . . . . . . . . . . . . . 476
R
Radiator . . . . . . . . . . . . . . . . . . . . . . . . 376
RadioAM-FM Radio . . . . . . . . . . . . . . . . . 171
Data System (RDS) . . . . . . . . . 174
Frequency Statement . . . . . 477
Reception . . . . . . . . . . . . . . . . . . . . . 175
Satellite . . . . . . . . . . . . . . . . . . . . . . . 174
Reading Lamps . . . . . . . . . . . . . . . 162