2020 CADILLAC XT6 heater

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
DRIVING AND OPERATING 185
4. Plug the heater cord into theconnector 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 cause a fire,
property damage, electric
shock, and injury.
(Continued)
Warning (Continued)
.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. Ask a dealer in the area where
you will be parking the vehicle for the
best advice on this.

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
VEHICLE CARE 269
5. Reverse Steps 1–3 to reinstall thefilter cover housing.
6. If equipped, reset the engine air filter life system after replacing
the engine air filter. See Engine
Air Filter Life System 0267.
{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.
1. Electric Engine Cooling Fan
(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

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
270 VEHICLE CARE
appropriate levels. SeeRecommended
Fluids and Lubricants 0343 and
Maintenance Schedule 0333.
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 0272.
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.
Check to see if coolant is visible in the
coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not do anything else until
it cools down. If coolant is visible but
the coolant level mark is not at or
above the indicated mark, add a
50/50 mixture of clean, drinkable

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
VEHICLE CARE 273
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.
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 0263 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
(Continued)

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
376 INDEX
E
Electric Brake Boost . . . . . . . . . . . . . . . . 197
Electric Parking Brake . . . . . . . . . . . . . . 198
Electric Parking Brake Light . . . . . . . 122
Electrical Equipment, Add-On . . . . . 256
Electrical SystemEngine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Fuses and Circuit Breakers . . . . . . . 281
Instrument Panel Fuse Block . . . . 285
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 268
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 120
Compartment Overview . . . . . . . . . . 263
Coolant Temperature Gauge . . . . . 117
Cooling System . . . . . . . . . . . . . . . . . . . 269
Drive Belt Routing . . . . . . . . . . . . . . . . 348
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Oil Life System . . . . . . . . . . . . . . . . . . . . 266
Oil Pressure Light . . . . . . . . . . . . . . . . . 126
Overheating . . . . . . . . . . . . . . . . . . . . . . . 272 Engine (cont'd)
Power Messages . . . . . . . . . . . . . . . . . . 135
Running While Parked . . . . . . . . . . . 190
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 181
Engine Air Filter Life System . . . . . . 267
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 151
Equipment, Towing . . . . . . . . . . . . . . . . . 252
Event Data Recorders . . . . . . . . . . . . . . 361
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 151
Extended Parking . . . . . . . . . . . . . . . . . . . 189
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 62
Exterior Lamp Controls . . . . . . . . . . . . 144
Exterior Lamps Off Reminder . . . . . . 147
Exterior Lighting Battery Saver . . . . 151
F
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 268
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 147
Flashers, Hazard Warning . . . . . . . . . . 148
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 311
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Fluid Automatic Transmission . . . . . . . . . 267
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 273
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 33 Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Front Seats
Heated and Ventilated . . . . . . . . . . . . . 48
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 242
Economy, Driving for Better . . . . . 165
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 244
Filling the Tank . . . . . . . . . . . . . . . . . . . 242
Foreign Countries . . . . . . . . . . . . . . . . . 242
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Low Fuel Warning Light . . . . . . . . . 127
Management, Active . . . . . . . . . . . . . . 188
Prohibited Fuels . . . . . . . . . . . . . . . . . . 241
Recommended . . . . . . . . . . . . . . . . . . . . 241
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Fuses and Circuit Breakers . . . . . . . 281
Instrument Panel Fuse Block . . . . 285
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287

Cadillac XT6 Owner Manual (GMNA-Localizing-U.S./Canada-12984300) -
2020 - CRC - 3/19/19
INDEX 377
G
Garage Door Opener . . . . . . . . . . . . . . . . 141Programming . . . . . . . . . . . . . . . . . . . . . . 141
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 279
Gauges Engine Coolant Temperature . . . . 117
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Speedometer . . . . . . . . . . . . . . . . . . . . . . 116
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 116
Trip Odometer . . . . . . . . . . . . . . . . . . . . 116
Warning Lights andIndicators . . . . . . . . . . . . . . . . . . . . . . . . 112
General Information
Service and Maintenance . . . . . . . . 332
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 259
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352
H
Hazard Warning Flashers . . . . . . . . . . 148
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 42
Head-up Display . . . . . . . . . . . . . . . . . . . . 131
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 147 Headlamps (cont'd)
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 147
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 147
High-Beam On Light . . . . . . . . . . . . . . 127
High/Low Beam Changer . . . . . . . . . 147
Lamps On Reminder . . . . . . . . . . . . . . 128
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Steering Wheel . . . . . . . . . . . . . . . . . . . . 105
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 34
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184
Heating . . . . . . . . . . . . . . . . . . . . . . . . .153, 158
High-Beam On Light . . . . . . . . . . . . . . . . 127
High-Speed Operation . . . . . . . . . . . . . . 298
Hill and Mountain Roads . . . . . . . . . . 174
Hill Start Assist (HSA) . . . . . . . . . . . . . 199
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 261
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
How to Wear Seat Belts Properly . . . 56
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . .153, 158
I
Ignition Positions . . . . . . . . . . . . . . . . . . . 180
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Indicator
Pedestrian Ahead . . . . . . . . . . . . . . . . . 124
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 124
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Information Publication Ordering . . . . . . . . . . . . . 358
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . 152
Infotainment System . . . . . . . . . . . . . . . 362
Instrument Cluster . . . . . . . . . . . . . . . . . 113
Instrument Panel Overview . . . . . . . . . . . 5
Interior Rearview Mirrors . . . . . . . . . . . 34
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . 318
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . 8
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 291
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Daytime Running (DRL) . . . . . . . . . . 147
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149