engine overheat CADILLAC XT5 2023 User Guide

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
352 Vehicle Care
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
2.0L L4 Engine
1. Electric Engine CoolingFan (Out of View)
2. Coolant Surge Tank and Pressure Cap
3.6L V6 Engine
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 is filled with
DEX-COOL engine coolant
mixture. This coolant needs to
be checked and changed at
appropriate levels. See
Recommended Fluids and
Lubricants 0433 and
Maintenance Schedule 0429.
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 0356.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
354 Vehicle Care
the cooling system is cool
before this is done. See
Engine Overheating0356.
The coolant surge tank is in
the engine compartment on
the driver side of the vehicle.
See Engine Compartment
Overview 0342.
How to Add Coolant to the
Surge Tank
{Warning
Spilling coolant on hot
engine parts can burn you.
Coolant contains ethylene
glycol and it will burn if the
engine parts are hot enough.
{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
(Continued)
Warning (Continued)
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.
Caution
Failure to follow the specific
coolant fill procedure could
cause the engine to
overheat and could cause
system damage. If coolant is
not visible in the surge tank,
contact your dealer.
The coolant surge tank
pressure cap can be removed
when the cooling system,
including the surge tank
pressure cap and upper
radiator hose, is no longer hot.
Coolant Fill Instructions
(3.6L Engine Only)
1. Turn the pressure cap slowly counterclockwise.
If a hiss is heard, wait for
that to stop. A hiss means
there is still some
pressure left.
2. Keep turning the pressure cap slowly and remove it.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
356 Vehicle Care
5. Turn off the airconditioning.
6. Set the parking brake.
7. At the same time, press the accelerator 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
0 126. 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 0446.
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.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
Vehicle Care 357
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

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/28/22
384 Vehicle Care
Tread:The portion of a
tire that comes into
contact with the road.
Treadwear Indicators
:
Narrow bands, sometimes
called wear bars, that show
across the tread of a tire
when only 1.6 mm (1/16 in)
of tread remains. See
When It Is Time for New
Tires 0394.
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
0397.
Vehicle Capacity Weight
:
The number of designated
seating positions multiplied
by 68 kg (150 lbs) plus the
rated cargo load. See
Vehicle Load Limits 0247.
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 0247.
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 XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/25/22
INDEX 471
Electrical System (cont'd)Fuses and Circuit
Breakers . . . . . . . . . . . . . . . . . . . . 367
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . 371
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . 374
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . 458
Engine Air Cleaner/Filter . . . . . . . . . . 350
Air Filter Life System . . . . . 349
Check Light(Malfunction
Indicator) . . . . . . . . . . . . . . . . . . . . 129
Compartment
Overview . . . . . . . . . . . . . . . . . . . 342
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . . . 126
Coolant Temperature Warning Light . . . . . . . . . . . . . . 135
Cooling System . . . . . . . . . . . . 352
Drive Belt Routing . . . . . . . . . 440
Exhaust . . . . . . . . . . . . . . . . . . . . . . 260
Heater . . . . . . . . . . . . . . . . . . . . . . . . 256
Oil Life System . . . . . . . . . . . . . 348
Oil Pressure Light . . . . . . . . . . 137
Overheating . . . . . . . . . . . . . . . . . 356 Engine (cont'd)
Power Messages . . . . . . . . . . . 146
Running While Parked . . . . 261
Starting . . . . . . . . . . . . . . . . . . . . . . 254
Entry Lighting . . . . . . . . . . . . . . . . . 157
Equipment, Towing . . . . . . . . . . 331
Event Data Recorders . . . . . 455
Exit Lighting . . . . . . . . . . . . . . . . . . . 157
Extended Parking . . . . . . . . . . . 260
Extender, Seat Belt . . . . . . . . . . . 67
Exterior Lamp Controls . . . . . . . . . . . . . . 151
Lamps Off Reminder . . . . . . 153
Lighting Battery Saver . . . 158
F
Filter
Engine Air Cleaner . . . . . . . . 350
Flash-to-Pass . . . . . . . . . . . . . . . . . . 153
Flashers, Hazard Warning . . . . . . . . . . . . . . . . . . . . . . . 155
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . 401
Changing . . . . . . . . . . . . . . . . . . . . . 402
Floor Mats . . . . . . . . . . . . . . . . . . . . . 425
Fluid Automatic
Transmission . . . . . . . . . . . . . . 349
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 359 Fluid (cont'd)
Washer . . . . . . . . . . . . . . . . . . . . . . . 357
Folding Mirrors . . . . . . . . . . . . . . . . . 38
Forward Collision Alert (FCA)System . . . . . . . . . . . . . . . . . . . . . . 303
Frequency Statement
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . 452
Front Heated and VentilatedSeats . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Pedestrian Braking
(FPB) System . . . . . . . . . . . . . 307
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . 49
Fuel
Additives . . . . . . . . . . . . . . . . . . . . . . 319
Economy, Driving forBetter . . . . . . . . . . . . . . . . . . . . . . . 234
Filling a Portable Fuel Container . . . . . . . . . . . . . . . . . . . 321
Filling the Tank . . . . . . . . . . . . . . 319
Foreign Countries . . . . . . . . . . 319
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Low Fuel Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Management, Active . . . . . . 259
Prohibited Fuels . . . . . . . . . . . . 318

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
16406251) - 2023 - CRC - 3/25/22
INDEX 475
Navigation (cont'd)Using the System . . . . . . . . . . 175
Net, Convenience . . . . . . . . . . . . 109
New Vehicle Break-In . . . . . . . 251
Night Vision System . . . . . . . . . 310
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . 125 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
Off-Road Driving . . . . . . . . . . . . . . . . . . . . . . . . 239
Recovery . . . . . . . . . . . . . . . . . . . . . 238
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 345
Engine Oil LifeSystem . . . . . . . . . . . . . . . . . . . . . . 348
Pressure Light . . . . . . . . . . . . . . 137
Older Children, Restraints . . . . . . . . . . . . . . . . . . . . . . 82
Online Account . . . . . . . . . . . . . . . 445
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . 456 Additional Information . . . 459
Overview . . . . . . . . . . . . . . . . . . . . . 457
OnStar Emergency . . . . . . . . . 458
OnStar Security . . . . . . . . . . . . . 459
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Overheating, Engine . . . . . . . . 356 Overview . . . . . . . . . . . . . . . . . . . . . . . . 160
Instrument Panel . . . . . . . . . . . . . . 5
P
Park
Assist . . . . . . . . . . . . . . . . . . 290, 294
Shifting Into . . . . . . . . . . . . . . . . . 258
Shifting Out of . . . . . . . . . . . . . 259
Parking Brake and P (Park)Mechanism Check . . . . . . . . 361
Extended . . . . . . . . . . . . . . . . . . . . 260
Over Things
That Burn . . . . . . . . . . . . . . . . . . 259
Parking Assist Automatic . . . . . . . . . . . . . . . . . . . . 296
Parking or Backing
Assistance Systems . . . . . . 290
Passenger Airbag StatusIndicator . . . . . . . . . . . . . . . . . . . . . 128
Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 231
Sensing System . . . . . . . . . . . . . . 75
Pedestrian Ahead Indicator . . . . . . . . . . . . . . . . . . . . . . . 134 Perchlorate Materials
Requirements,
California . . . . . . . . . . . . . . . . . . . . . 338
Performance Shifting Light . . . . . . . . . . . . . . . . 133
Phone Apple CarPlay and
Android Auto . . . . . . . . . . . . . . 203
Bluetooth . . . . . . . . . . . . . . . 197, 198
Port USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 188
Power Door Locks . . . . . . . . . . . . . . . . . . . . 23
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 118
Protection, Battery . . . . . . . . 158
RetainedAccessory (RAP) . . . . . . . . . 258
Windows . . . . . . . . . . . . . . . . . . . . . . . 42
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Privacy Vehicle Data
Recording . . . . . . . . . . . . . . . . . . 454
Problems with Route Guidance . . . . . . . . . . . . . . . . . . . . . . 188