coolant temperature CADILLAC XT4 2023 User Guide

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Vehicle Care 339
{Warning
Do not touch heater or
radiator hoses, or other
engine parts. They can be
very hot and can burn you.
Do not run the engine if
there is a leak; all coolant
could leak out. That could
cause an engine fire and can
burn you. Fix any leak before
driving the vehicle.
Engine Coolant
The engine cooling system in
the vehicle is filled with
DEX-COOL engine coolant
mixture. This coolant needs to
be checked and changed at
appropriate levels. See
Recommended Fluids and
Lubricants0429 and
Maintenance Schedule 0425.
The following explains the
cooling system and how to
check and add coolant when it
is low. If there is a problem
with engine overheating, see
Engine Overheating 0342.
What to Use
{Warning
Do not touch heater or
radiator hoses, or other
engine parts. They can be
very hot and can burn you.
Do not run the engine if
there is a leak; all coolant
could leak out. That could
cause an engine fire and can
burn you. Fix any leak before
driving the vehicle.
Use a 50/50 mixture of clean,
drinkable water and
DEX-COOL coolant. This
mixture:
.Gives freezing protection
down to −37 °C (−34 °F),
outside temperature.
.Gives boiling protection up
to 129 °C (265 °F), engine
temperature.
.Protects against rust and
corrosion.
.Will not damage aluminum
parts.
.Helps keep the proper
engine temperature.
Caution
Do not use anything other
than a mix of DEX-COOL
coolant that meets GM
Standard GMW3420 and
clean, drinkable water.
Anything else can cause
damage to the engine
cooling system and the
vehicle, which would not be
covered by the vehicle
warranty.
Never dispose of engine
coolant by putting it in the
trash, pouring it on the
ground, or pouring into
sewers, streams, or bodies of
water. Have the coolant
changed by an authorized
service center, familiar with
legal requirements regarding
used coolant disposal. This will
help protect the environment
and your health.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
342 Vehicle Care
Listen for pump activation and
movement of the control
valves while watching the level
of the coolant in the surge
tank. If the tank empties, turn
the ignition off, carefully
remove the surge tank cap,
refill to the indicated mark, and
repeat Steps 3-6. The fill and
air removal process will run for
approximately 10 minutes.
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
0123. 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 0439. 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
(Continued)
Warning (Continued)
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.

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Vehicle Care 343
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.
3. When it is safe to do so, pull off the road, shift to
P (Park) or N (Neutral), and
let the engine idle.
If the engine coolant
temperature gauge is no
longer in the overheated area
or the engine coolant
temperature warning light no
longer displays, the vehicle
can be driven. Continue to
drive the vehicle slowly for
about 10 minutes. Keep a safe
distance from the vehicle in
front. If the warning does not
come back on, continue to
drive normally and have the
cooling system checked for
proper fill and function. If the warning continues, pull
over, stop, and park the
vehicle right away.
If there is no sign of steam,
idle the engine for
three minutes while parked.
If the warning is still displayed,
turn off the engine until it
cools down.
Washer Fluid
What to Use
When windshield washer fluid
is needed, be sure to read the
manufacturer's instructions
before use. If operating the
vehicle in an area where the
temperature may fall below
freezing, use a fluid that has
sufficient protection against
freezing.
Adding Washer Fluid
The appropriate message will
appear in the Driver
Information Center (DIC) when
the fluid level is low.
Open the cap with the washer
symbol on it. Add washer fluid
until the tank is full. See
Engine Compartment
Overview
0331 for reservoir
location.
Caution
.Do not use washer fluid
that contains any type of
water repellent coating.
This can cause the wiper
blades to chatter or skip.
.Do not use engine coolant
(antifreeze) in the
windshield washer. It can
damage the windshield
washer system and paint.
.Do not mix water with
ready-to-use washer fluid.
Water can cause the
solution to freeze and
(Continued)

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
Vehicle Care 359
Fuses Usage84 Miscellaneous 3 –
Canister Purge
Solenoid/
Step Cam
Exhaust Solenoid
Cylinder 2 and 3/
Step Cam Intake
Cylinder
Solenoids/Turbo
Bypass Solenoid/
Oxygen Sensor
(Pre & Post))/
Step Cam
Exhaust
Solenoids/O2
Heater/Oxygen
Heated Sensor/
Mass Airflow/
Inlet Air
Temperature/
Throttle Inlet
Absolute
Pressure/
Humidity Sensor/
Coolant Flow
Control Valve
85 Shunt Fuses Usage
86 –
87 –
88 AEROSHUTTER/ Spare–
Aeroshutter
–
89 –
92 TRLR ST/TRN RT/Spare –
Trailer Stop/Turn
Lamp Right/
Spare
93 AHL/CVS –
Canister Vent
Solenoid
95 –
96 –
99 – Relays Usage
20 REAR DEFOGGER –
Rear Defogger/
Outside Rear
View Mirrors
Defogger
25 Front Wiper Control
31 Run/Crank
37 Front Wiper Speed
42 –
64 Starter Motor
66 Powertrain 71 TRAILER PARK LAMPS –Trailer
Park Lamps
–
73 A/C CONTROL –
Air Conditioning
Controls
80 Starter Pinion
90 –

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
INDEX 463
CaliforniaPerchlorate Materials
Requirements . . . . . . . . . . . . . . 327
California Proposition 65 Warning . . . . . . . . . . . . . . . 1, 404
Camera Rear Vision (RVC) . . . . . . . . . 286
Canadian Vehicle Owners . . . . 2
Capacities and Specifications . . . . . . . . . . . . . . . 433
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . 256
Liftgate . . . . . . . . . . . . . . . . . . . . . . . . . 24
Winter Driving . . . . . . . . . . . . . . 239
Cargo Cover . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Tie-Downs . . . . . . . . . . . . . . . . . . . . 106
Caution, Danger, and Warning . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Center Console Storage . . . . . . . . . . . . . . . . . . . . . . . 105
Chains, Tire . . . . . . . . . . . . . . . . . . . 388
Charging System Light . . . . . . . . . . . . . . . . 126
Wireless . . . . . . . . . . . . . . . . . . . . . . . 115
Check Engine Light (Malfunction Indicator) . . . . 126 Child Restraints
Infants and Young
Children . . . . . . . . . . . . . . . . . . . . . . . 80
Lower Anchors and Tethers for Children . . . . . . 86
Older Children . . . . . . . . . . . . . . . . 79
Securing . . . . . . . . . . . . . . . . . . 95, 98
Systems . . . . . . . . . . . . . . . . . . . . . . . . 83
Child Safety Locks . . . . . . . . . . . . 24
Circuit Breakers . . . . . . . . . . . . . 353
Cleaning Exterior Care . . . . . . . . . . . . . . . . 412
Interior Care . . . . . . . . . . . . . . . . . 417
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . 221
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .115
Cluster, Instrument . . . . . . . . . . .119
Collision Damage
Repair . . . . . . . . . . . . . . . . . . . . . . . . . 443
Compact Spare Tire . . . . . . . . 404
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . 102
Compass . . . . . . . . . . . . . . . . . . . . . . . . .114
Compressor Kit, Tire Sealant . . . . . . . . . . . . . . . . . . . . . . . . 390
Connected Services Connections . . . . . . . . . . . . . . . . 459
Diagnostics . . . . . . . . . . . . . . . . . . 460 Connected Services (cont'd)
Navigation . . . . . . . . . . . . . . . . . . . 458
Connections Connected Services . . . . . . 459
Control Traction andElectronic Stability . . . . . . . 267
Control of a Vehicle . . . . . . . . . 231
Controls Steering Wheel . . . . . . . . . . . . . 159
Convex Mirrors . . . . . . . . . . . . . . . . 34
Coolant Engine TemperatureGauge . . . . . . . . . . . . . . . . . . . . . . . . 123
Engine Temperature Warning Light . . . . . . . . . . . . . . 133
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . 221
Cooling System . . . . . . . . . . . . . . 338
Cornering Lamps . . . . . . . . . . . . . 152
Courtesy Lamps . . . . . . . . . . . . . . 153
Courtesy Transportation
Program . . . . . . . . . . . . . . . . . . . . . . 442
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Coverage Explanations . . . . . 187
Covers
Winter . . . . . . . . . . . . . . . . . . . . . . . . . 251

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
INDEX 465
ElectricalEquipment, Add-On . . . . . . . 325
System Overload . . . . . . . . . . 352
Electrical System Engine CompartmentFuse Block . . . . . . . . . . . . . . . . . 354
Fuses and Circuit
Breakers . . . . . . . . . . . . . . . . . . . . 353
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . 360
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . 452
Engine Air Cleaner/Filter . . . . . . . . . . 337
Air Filter Life System . . . . . 336
Check Light(Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 126
Compartment Overview . . . . . . . . . . . . . . . . . . . . 331
Coolant Temperature
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 123
Coolant Temperature Warning Light . . . . . . . . . . . . . . 133
Cooling System . . . . . . . . . . . . 338
Drive Belt Routing . . . . . . . . . 434
Exhaust . . . . . . . . . . . . . . . . . . . . . . 256
Heater . . . . . . . . . . . . . . . . . . . . . . . . 252 Engine (cont'd)
Oil Life System . . . . . . . . . . . . . 335
Oil Pressure Light . . . . . . . . . . 134
Overheating . . . . . . . . . . . . . . . . . 342
Power Messages . . . . . . . . . . . 143
Running While Parked . . . 256
Starting . . . . . . . . . . . . . . . . . . . . . . 248
Entry Lighting . . . . . . . . . . . . . . . . . 154
Equipment, Towing . . . . . . . . . 322
Event Data Recorders . . . . . 449
Exit Lighting . . . . . . . . . . . . . . . . . . . 154
Extended Parking . . . . . . . . . . . 255
Extender, Seat Belt . . . . . . . . . . . 64
Exterior Lamp Controls . . . . . . . . . . . . . . 148
Lamps Off Reminder . . . . . . 150
Lighting Battery Saver . . . 155
F
FilterEngine Air Cleaner . . . . . . . . 337
Flash-to-Pass . . . . . . . . . . . . . . . . . . 150
Flashers, Hazard
Warning . . . . . . . . . . . . . . . . . . . . . . . 152
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . 389 Changing . . . . . . . . . . . . . . . . . . . . . 398
Floor Mats . . . . . . . . . . . . . . . . . . . . . . 421 Fluid
Automatic
Transmission . . . . . . . . . . . . . . 336
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 345
Washer . . . . . . . . . . . . . . . . . . . . . . . 343
Folding Mirrors . . . . . . . . . . . . . . . . . 35
Forward Collision Alert (FCA)System . . . . . . . . . . . . . . . . . . . . . . . 297
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 446
Front Heated and VentilatedSeats . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Pedestrian Braking (FPB) System . . . . . . . . . . . . . 302
Storage . . . . . . . . . . . . . . . . . . . . . . . 103
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . 311
Economy, Driving forBetter . . . . . . . . . . . . . . . . . . . . . . . 229
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 313
Filling the Tank . . . . . . . . . . . . . . 311
Foreign Countries . . . . . . . . . . 311
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
466 INDEX
Fuel (cont'd)Management, Active . . . . . . 255
Prohibited Fuels . . . . . . . . . . . . 310
Recommended . . . . . . . . . . . . . . 310
Top Tier . . . . . . . . . . . . . . . . . . . . . . 309
Fuses Engine Compartment
Fuse Block . . . . . . . . . . . . . . . . . 354
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . . . 353
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . 360
G
Garage Door Opener . . . . . . . . 144
Programming . . . . . . . . . . . . . . . . 144
Gas Strut(s) . . . . . . . . . . . . . . . . . . . 349
Gauges
Engine CoolantTemperature . . . . . . . . . . . . . . . 123
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Odometer . . . . . . . . . . . . . . . . . . . . . 122
Speedometer . . . . . . . . . . . . . . . . 122
Tachometer . . . . . . . . . . . . . . . . . . 122
Trip Odometer . . . . . . . . . . . . . . 122
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 118
Gear Shifting Light . . . . . . . . . . . 130 General Information
Service and
Maintenance . . . . . . . . . . . . . . 423
Towing . . . . . . . . . . . . . . . . . . . . . . . . . 313
Vehicle Care . . . . . . . . . . . . . . . . . 327
Global Positioning System (GPS) . . . . . . . . . . . . . . . . 185
Glove Box . . . . . . . . . . . . . . . . . . . . . . . 102
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . 439
Guidance Problems with theRoute . . . . . . . . . . . . . . . . . . . . . . . . . 186
H
Hazard WarningFlashers . . . . . . . . . . . . . . . . . . . . . . . 152
HD Radio Technology . . . . . . . 166
Head Restraints . . . . . . . . . . . . . . . 45
Head-Up Display (HUD) . . . . . 139
Headlamps Aiming . . . . . . . . . . . . . . . . . . . . . . . . 350
Automatic . . . . . . . . . . . . . . . . . . . . . 151
Bulb Replacement . . . . . . . . . 350
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . 150 Headlamps (cont'd)
Flash-to-Pass . . . . . . . . . . . . . . . . 150
High-Beam On Light . . . . . . . 135
High/Low Beam
Changer . . . . . . . . . . . . . . . . . . . . . 150
Lamps On Reminder . . . . . . . 136
Heated
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Rear Seats . . . . . . . . . . . . . . . . . . . . 56
Steering Wheel . . . . . . . . . . . . . 110
Ventilated Front Seats . . . . 53
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . 252
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . 221
High-Beam On Light . . . . . . . . . 135
High-Speed Operation . . . . . 374
Hill and Mountain Roads . . . . . . . . . . . . . . . . . . . . . . . . . 239
Hill Start Assist (HSA) . . . . . . 266
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
How to Wear Seat Belts Properly . . . . . . . . . . . . . . . . . . . . . . . . 58
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Cadillac XT4 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16412876) - 2023 - CRC - 3/25/22
468 INDEX
Lights (cont'd)Charging System . . . . . . . . . . . 126
Check Engine
(Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 126
Cruise Control Light . . . . . . . 136
Door Ajar . . . . . . . . . . . . . . . . . . . . . . 136
Driver Mode Control . . . . . . . 133
Electric Parking Brake . . . . 129
Engine Coolant Temperature
Warning . . . . . . . . . . . . . . . . . . . . . 133
Engine Oil Pressure . . . . . . . . 134
Gauges and Indicators . . . . 118
Gear Shifting . . . . . . . . . . . . . . . . 130
High-Beam On . . . . . . . . . . . . . . . 135
Lane Keep Assist . . . . . . . . . . . 131
Low Fuel Warning . . . . . . . . . . 135
Performance Shifting . . . . . 130
Seat Belt Reminders . . . . . . 123
Security . . . . . . . . . . . . . . . . . . . . . . . 135
Service Electric Parking Brake . . . . . . . . . . . . . . 129
StabiliTrak OFF . . . . . . . . . . . . . 132
Tire Pressure . . . . . . . . . . . . . . . . 134
Traction Control System
(TCS)/StabiliTrak . . . . . . . . . . 132 Lights (cont'd)
Traction Off . . . . . . . . . . . . . . . . . . 131
Locks Automatic Door . . . . . . . . . . . . . . 23
Delayed Locking . . . . . . . . . . . . . 22
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Lockout Protection . . . . . . . . . 23
Power Door . . . . . . . . . . . . . . . . . . . 22
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Loss of Control . . . . . . . . . . . . . . 233
Low Fuel Warning Light . . . . 135
Lower Anchors and Tethers for Children
(LATCH System) . . . . . . . . . . . . . 86
Lumbar Adjustment . . . . . . . . . . 48 Front Seats . . . . . . . . . . . . . . . . . . . 48
M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . . . . 431
Maintenance Schedule . . . . 425 Recommended Fluids
and Lubricants . . . . . . . . . . . 429
Malfunction Indicator Lamp . . . . . . . . . . . . . . 126
Manual
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Map Data Updates . . . . . . . . . . . 187 Maps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Massage
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Media Avoiding UntrustedDevices . . . . . . . . . . . . . . . . . . . . . . 169
Memory Seats . . . . . . . . . . . . . . . . . . 50
Messages
Engine Power . . . . . . . . . . . . . . . 143
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 143
Vehicle Speed . . . . . . . . . . . . . . . 144
Mirrors Automatic Dimming . . . . . . . . . 36
Automatic DimmingRearview . . . . . . . . . . . . . . . . . . . . . 36
Convex . . . . . . . . . . . . . . . . . . . . . . . . . 34
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Interior Rearview . . . . . . . . . . . . 36
Manual Rearview . . . . . . . . . . . . 36
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Rear Camera . . . . . . . . . . . . . . . . . . 37
Tilt in Reverse . . . . . . . . . . . . . . . . 36
Mode Driver Control . . . . . . . . . . . . . . 269
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . . 375
Multi-band Antenna . . . . . . . . . . 168