2022 CADILLAC XT6 coolant temperature

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
330 VEHICLE CARE
Warning (Continued)
fit, form, and function may result in
personal injury or damage to the
vehicle.
4. Inspect or replace the engine air cleaner/filter.
5. Reverse Steps 1–3 to reinstall the filter cover housing.
6. If equipped, reset the engine air filter life system after replacing the
engine air filter. See Engine Air
Filter Life System 0328.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. Use caution
when working on the engine. Do
not start the engine or drive the
vehicle with the air cleaner/filter
off, as flames may be present if the
engine backfires.
Caution
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always have
the air cleaner/filter in place when
driving.
Cooling System
The cooling system allows the engine
to maintain the correct working
temperature.
2.0L L4 Engine
1. Electric Engine Cooling Fan (Out
of View) 2. Coolant Surge Tank and
Pressure Cap
3.6L V6 Engine
1. Electric Engine Cooling Fan (Outof View)
2. Coolant Surge Tank and Pressure Cap
{Warning
An underhood electric fan can start
up even when the engine is not
running and can cause injury. Keep
hands, clothing, and tools away
from any underhood electric fan.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
VEHICLE CARE 331
{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 are filled with DEX-COOL
engine coolant mixture. This coolant
needs to be checked and changed at
appropriate levels. SeeRecommended
Fluids and Lubricants 0404 and
Maintenance Schedule 0395.
The following explains the cooling
systems and how to check and add
coolant when it is low. If there is a
problem with engine overheating, see
Engine Overheating 0334.
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.
Checking Coolant
The vehicle must be on a level surface
when checking the coolant level.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
334 VEHICLE CARE
7. At the same time, press theaccelerator and the brake for
automatic transmission vehicles for
two seconds, then release.
At the end of the cycle, check the
coolant level in the surge tank and
add coolant, if it is low. Turn off the
vehicle, allow the Engine Control
Module (ECM) to go to sleep, about
two minutes, and repeat steps 3-7.
Listen for pump activation and
movement of the control valves while
watching the level of the 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 0113. 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
Service 0416.
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:

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
VEHICLE CARE 335
1. Turn the air conditioning off.
2. Turn the heater on to the highesttemperature 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 0322 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 damage the washer fluid
tank and other parts of the
washer system.
.When using concentrated washer
fluid, follow the manufacturer
instructions for adding water.
.Fill the washer fluid tank only
three-quarters full when it is very
cold. This allows for fluid
expansion if freezing occurs,
which could damage the tank if
it is completely full.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
436 INDEX
CheckEngine Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 115
Child Restraints Infants and Young Children . . . . . . . 74
Lower Anchors and Tethersfor Children . . . . . . . . . . . . . . . . . . . . . . . 79
Older Children . . . . . . . . . . . . . . . . . . . . . 72
Securing . . . . . . . . . . . . . . . . . . . . . . . . 87, 89
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . 343
Cleaning
Exterior Care . . . . . . . . . . . . . . . . . . . . . . 384
Interior Care . . . . . . . . . . . . . . . . . . . . . . 389
Climate Control Systems Dual Automatic . . . . . . . . . . . . . . . . . . . 206
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Cluster, Instrument . . . . . . . . . . . . . . . . . 109
Collision Damage Repair . . . . . . . . . . . 419
Compact Spare Tire . . . . . . . . . . . . . . . . . 378
Compartments Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Connected Services Connections . . . . . . . . . . . . . . . . . . . . . . . 431
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 433
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 431 Connections
Connected Services . . . . . . . . . . . . . . . 431
Control Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . . . 247
Control of a Vehicle . . . . . . . . . . . . . . . . 217
Controls Steering Wheel . . . . . . . . . . . . . . . . . . . . 148
Convenience Net . . . . . . . . . . . . . . . . . . . . . 98
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 30
Coolant Engine Temperature Gauge . . . . . . 113
Cooling . . . . . . . . . . . . . . . . . . . . . . . . .206, 211
Cooling System . . . . . . . . . . . . . . . . . . . . . 330
Cornering Lamps . . . . . . . . . . . . . . . . . . . 143
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 143
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418
Cover Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Coverage Explanations . . . . . . . . . . . . . 173
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 250
Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Cruise Control, Adaptive . . . . . . . . . . . 252
Cruise Control, Super . . . . . . . . . . . . . . . 262
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Customer Assistance . . . . . . . . . . . . . . . 414 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414 Customer Assistance (cont'd)
Text Telephone (TTY) Users . . . . . 414
Customer Information Publications OrderingInformation . . . . . . . . . . . . . . . . . . . . . . 421
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 412
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 423
D
Damage Repair, Collision . . . . . . . . . . . 419
Danger, Warning, and Caution . . . . . . . . 2
Data Collection Infotainment System . . . . . . . . . . . . . 424
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424
Data Recorders, Event . . . . . . . . . . . . . . 423
Database Coverage Explanations . . . . . . . . . . . . . . . . . . . . . . 173
Daytime Running Lamps (DRL) . . . 141
Defensive Driving . . . . . . . . . . . . . . . . . . . 217
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 18
Destination . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Diagnostics Connected Services . . . . . . . . . . . . . . . 433
Distracted Driving . . . . . . . . . . . . . . . . . . 216
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 143
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . 124

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
INDEX 437
Door (cont'd)Delayed Locking . . . . . . . . . . . . . . . . . . . 18
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . 18
Drive Belt Routing, Engine . . . . . . . . . 411
Drive Systems All-Wheel Drive . . . . . . . . . . . . . . . . . . . 244
Driver Teen . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Driver Assistance Systems . . . . . . . . . 276
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . . 124
Driver Mode Control . . . . . . . . . . . . . . . . 248
Driver Mode Control Light . . . . . . . . . 121
Driving Assistance Systems . . . . . . . . . . . . . . . 287
Better Fuel Economy . . . . . . . . . . . . . 216
Characteristics and
Towing Tips . . . . . . . . . . . . . . . . . . . . . 305
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Hill and Mountain Roads . . . . . . . . 224
If the Vehicle is Stuck . . . . . . . . . . . . 226
Impaired . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
Loss of Control . . . . . . . . . . . . . . . . . . . . 219
Off-Road . . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Off-Road Recovery . . . . . . . . . . . . . . . . 219
Vehicle Load Limits . . . . . . . . . . . . . . 226
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 223 Driving (cont'd)
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . 206
E
Electric Brake Boost . . . . . . . . . . . . . . . . 244
Electric Parking Brake . . . . . . . . . . . . . . 245
Electric Parking Brake Light . . . . . . . 118
Electrical Equipment, Add-On . . . . . 316
Electrical SystemEngine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Fuses and Circuit Breakers . . . . . . . 343
Instrument Panel Fuse Block . . . . 347
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 426
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 329
Check Light (Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 115
Compartment Overview . . . . . . . . . . 322
Coolant Temperature Gauge . . . . . 113
Cooling System . . . . . . . . . . . . . . . . . . . 330
Drive Belt Routing . . . . . . . . . . . . . . . . 411 Engine (cont'd)
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Oil Life System . . . . . . . . . . . . . . . . . . . . 327
Oil Pressure Light . . . . . . . . . . . . . . . . . 122
Overheating . . . . . . . . . . . . . . . . . . . . . . . 334
Power Messages . . . . . . . . . . . . . . . . . . 130
Running While Parked . . . . . . . . . . . 238
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
Engine Air Filter Life System . . . . . . 328
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 144
Equipment, Towing . . . . . . . . . . . . . . . . . 312
Event Data Recorders . . . . . . . . . . . . . . 423
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 145
Extended Parking . . . . . . . . . . . . . . . . . . . 237
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 60
Exterior Lamp Controls . . . . . . . . . . . . 139
Exterior Lamps Off Reminder . . . . . . 141
Exterior Lighting Battery Saver . . . . 145
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 329
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 141
Flashers, Hazard Warning . . . . . . . . . . 142
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 371 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 372
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 392

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-15218998) -
2022 - CRC - 10/22/21
438 INDEX
FluidAutomatic Transmission . . . . . . . . . 328
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 31
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Front Seats Heated and Ventilated . . . . . . . . . . . . 46
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 302
Economy, Driving for Better . . . . . 216
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 304
Filling the Tank . . . . . . . . . . . . . . . . . . . 303
Foreign Countries . . . . . . . . . . . . . . . . . 302
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Low Fuel Warning Light . . . . . . . . . 122
Management, Active . . . . . . . . . . . . . . 237
Prohibited Fuels . . . . . . . . . . . . . . . . . . 302
Recommended . . . . . . . . . . . . . . 301, 302
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 Fuses
Engine Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343
Fuses and Circuit Breakers . . . . . . . 343
Instrument Panel Fuse Block . . . . 347
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349
G
Garage Door Opener . . . . . . . . . . . . . . . . 135
Programming . . . . . . . . . . . . . . . . . . . . . . 135
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 340
Gauges
Engine Coolant Temperature . . . . 113
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Speedometer . . . . . . . . . . . . . . . . . . . . . . 111
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 112
Trip Odometer . . . . . . . . . . . . . . . . . . . . 112
Warning Lights andIndicators . . . . . . . . . . . . . . . . . . . . . . . . 109
General Information Service and Maintenance . . . . . . . . 394
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 319
Global Positioning
System (GPS) . . . . . . . . . . . . . . . . . . . . . . 172
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92 GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415
Guidance Problems with the Route . . . . . . . . . 172
H
Hazard Warning Flashers . . . . . . . . . . 142
HD Radio Technology . . . . . . . . . . . . . . 154
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 40
Head-up Display . . . . . . . . . . . . . . . . . . . . 127
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 141
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 141
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 141
High-Beam On Light . . . . . . . . . . . . . . 123
High/Low Beam Changer . . . . . . . . . 141
Lamps On Reminder . . . . . . . . . . . . . . 123
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Steering Wheel . . . . . . . . . . . . . . . . . . . . 101
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 31
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Heating . . . . . . . . . . . . . . . . . . . . . . . . .206, 211