2023 CADILLAC XT6 heater

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
262 Driving and Operating
4. Plug the heater cord intothe connector in the front
fascia.
5. Plug it into a normal, grounded 110-volt AC
outlet.
{Warning
Improper use of the heater
cord or an extension cord
can damage the cord and
may result in overheating
and fire.
.Plug the cord into a
three-prong electrical
utility receptacle that is
protected by a ground
fault detection function.
An ungrounded outlet
could cause an electric
shock.
.Use a weatherproof,
heavy-duty, 15 amp-rated
extension cord if needed.
Failure to use the
recommended extension
cord in good operating
condition, or using a
damaged heater or
extension cord, could
make it overheat and
(Continued)
Warning (Continued)
cause a fire, property
damage, electric shock,
and injury.
.Do not operate the vehicle
with the heater cord
permanently attached to
the vehicle. Possible
heater cord and
thermostat damage could
occur.
.While in use, do not let the
heater cord touch vehicle
parts or sharp edges.
.Before starting the
vehicle, unplug the cord.
Keep the cord away from
any moving parts.
6. Before starting the engine, be sure to unplug and
store the cord.
7. Install the engine heater connector cover.
The length of time the heater
should remain plugged in
depends on several factors.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-16405819) -
2023 - CRC - 3/22/22
Vehicle Care 377
3.6L V6 Engine
1. Electric Engine CoolingFan (Out of 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.
{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. See
Recommended Fluids and
Lubricants 0458 and
Maintenance Schedule 0454.
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 0381.
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.

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
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