engine overheat CADILLAC XT5 2019 User Guide

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
VEHICLE CARE 263
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 0343 and Maintenance
Schedule 0334.
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 0265.
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.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
264 VEHICLE CARE
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 water
and DEX-COOL coolant. Be sure the
cooling system is cool before this is
done. See Engine Overheating 0265.
The coolant surge tank is in the
engine compartment on the driver
side of the vehicle. See Engine
Compartment Overview 0257.
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 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-
12146119) - 2019 - crc - 7/27/18
VEHICLE CARE 265
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.
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.
3. Fill the coolant surge tank withthe proper mixture to the mark
pointed to on the front of the
coolant surge tank.
4. With the coolant surge tank pressure cap off, start the engine
and let it run until you can feel
the upper radiator hose getting
hot. Watch out for the engine
cooling fans. By this time, the
coolant level inside the coolant
surge tank may be lower. If the
level is lower, add more of the
proper mixture to the coolant
surge tank until the level reaches
the mark pointed to on the front
of the coolant surge tank. 5. Replace the pressure cap tightly.
6. Verify coolant level after the
engine is shut off and the
coolant is cold. If necessary,
repeat coolant fill procedure
Step 1–6.
Caution
If the pressure cap is not tightly
installed, coolant loss and engine
damage may occur. Be sure the cap
is properly and tightly secured.
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 0128. 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 0354.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
266 VEHICLE CARE
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(Continued)
Warning (Continued)
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.
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.

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
INDEX 379
Dual Automatic ClimateControl System . . . . . . . . . . . . . . . . . . . . 167
E
Electric Parking Brake . . . . . . . . . . . . . . 202
Electric Parking Brake Light . . . . . . . 135
Electrical Equipment, Add-On . . . . . 252
Electrical System
Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276
Fuses and Circuit Breakers . . . . . . . 275
Instrument Panel Fuse Block . . . . 279
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 275
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Emergency OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 365
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 262
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 132
Compartment Overview . . . . . . . . . . 257
Coolant Temperature Gauge . . . . . 128
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 137
Cooling System . . . . . . . . . . . . . . . . . . . 262
Drive Belt Routing . . . . . . . . . . . . . . . . 349
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 Engine (cont'd)
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190
Oil Life System . . . . . . . . . . . . . . . . . . . . 260
Oil Pressure Gauge . . . . . . . . . . . . . . . . 127
Oil Pressure Light . . . . . . . . . . . . . . . . . 138
Overheating . . . . . . . . . . . . . . . . . . . . . . . 265
Power Messages . . . . . . . . . . . . . . . . . . 147
Running While Parked . . . . . . . . . . . 195
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 164
Equipment, Towing . . . . . . . . . . . . . . . . . 247
Event Data Recorders . . . . . . . . . . . . . . 361
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 165
Extended Parking . . . . . . . . . . . . . . . . . . . 194
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 75
Exterior Lamp Controls . . . . . . . . . . . . 159
Exterior Lamps Off Reminder . . . . . . 161
Exterior Lighting Battery Saver . . . . 165
F
Features Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Filter, Engine Air Cleaner . . . . . . . . . . . . . . . . 262
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 161
Flashers, Hazard Warning . . . . . . . . . . 162
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 313 Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 331
Fluid
Automatic Transmission . . . . . . . . . 261
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 268
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 267
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 48
Forward Automatic Braking . . . . . . . . 229
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Heated and Ventilated . . . . . . . . . . . . . 63
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 238
Economy Driving . . . . . . . . . . . . . . . . . . . 25
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 239
Filling the Tank . . . . . . . . . . . . . . . . . . . 238
Foreign Countries . . . . . . . . . . . . . . . . . 238
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Low Fuel Warning Light . . . . . . . . . 139
Management, Active . . . . . . . . . . . . . . 193
Prohibited Fuels . . . . . . . . . . . . . . . . . . 237
Recommended . . . . . . . . . . . . . . . . . . . . 237

Cadillac XT5 Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
12146119) - 2019 - crc - 7/27/18
382 INDEX
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 345
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 340
Maintenance Schedule . . . . . . . . . . . . . 334 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 343
Malfunction Indicator Lamp . . . . . . . 132
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . 199
Memory Features . . . . . . . . . . . . . . . . . . . . 11
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 61
Messages Engine Power . . . . . . . . . . . . . . . . . . . . . 147
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 147
Mirror Rear Camera . . . . . . . . . . . . . . . . . . . . . . . . 50
Mirrors
Automatic Dimming . . . . . . . . . . . . . . . . 49
Automatic Dimming Rearview . . . . . 50
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Manual Rearview . . . . . . . . . . . . . . . . . . . 50
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . 49
Mirrors, Interior Rearview . . . . . . . . . . . 50 Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Driver Control . . . . . . . . . . . . . . . . . . . . . 207
Monitor System, Tire Pressure . . . . . 293
N
Navigation Connected Services . . . . . . . . . . . . . . . 372
Net, Convenience . . . . . . . . . . . . . . . . . . . 110
New Vehicle Break-In . . . . . . . . . . . . . . . 187
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Engine Oil Life System . . . . . . . . . . . 260
Engine Oil Pressure Gauge . . . . . . . 127
Pressure Light . . . . . . . . . . . . . . . . . . . . . 138
Older Children, Restraints . . . . . . . . . . . 88
Online Owner Center . . . . . . . . . . . . . . . 353
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362
OnStar Additional Information . . . . 366
OnStar Emergency . . . . . . . . . . . . . . . . . . 365
OnStar Overview . . . . . . . . . . . . . . . . . . . . 364
OnStar Security . . . . . . . . . . . . . . . . . . . . . 366
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118 Overheating, Engine . . . . . . . . . . . . . . . . 265
P
Park
Shifting Into . . . . . . . . . . . . . . . . . . . . . . 192
Shifting Out of . . . . . . . . . . . . . . . . . . . . 193
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 220
Parking
Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 270
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 194
Over Things That Burn . . . . . . . . . . . 193
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 220
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Passenger Compartment Air
Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Passenger Sensing System . . . . . . . . . . 82
Pedestrian Ahead Indicator . . . . . . . . 136
Perchlorate Materials Requirements, California . . . . . . . . . 255
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118