2020 CADILLAC CT5 coolant temperature

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
VEHICLE CARE 251
3.0L V6 Engine
1. Air Duct Clamps
2. Electrical Connectors
3. Screws
1. Disconnect the harnessconnectors from the air cleaner/
filter cover electrical
connectors (2).
2. Loosen the screws on the air duct clamps (1) holding the air
outlet ducts in place. Do not
remove clamps. Move the ducts
aside. 3. Remove the 13 screws (3) on top
of the engine air cleaner/filter
cover to gain access to both air
cleaner/filters.
4. Lift the engine air cleaner/filter cover.
5. Lift and remove one or both engine air cleaner/filters.
6. Inspect or replace one or both engine air cleaner/filters.
7. Reverse Steps 1–4 to reinstall the engine air cleaner/filter cover.
{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. Engine Coolant Surge Tankand Pressure Cap

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
252 VEHICLE CARE
2. Engine Cooling Fan (Outof View)
3.0L V6 Engine
1. Engine Coolant Surge Tankand Pressure Cap
2. Engine Cooling Fan (Out of View)
{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 cooling system in the vehicle is
filled with DEX-COOL engine coolant.
See Maintenance Schedule 0308 and
Recommended Fluids and Lubricants
0 317.
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 0256.
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 CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
VEHICLE CARE 257
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 overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
vehicle 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
Open the cap with the washer symbol
on it. Add washer fluid until the tank
is full. See Engine Compartment
Overview 0243 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
(Continued)

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
INDEX 349
Connected ServicesConnections . . . . . . . . . . . . . . . . . . . . . . . 345
Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . 346
Navigation . . . . . . . . . . . . . . . . . . . . . . . . . 344
Connections Connected Services . . . . . . . . . . . . . . . 345
Control
Traction and ElectronicStability . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Control of a Vehicle . . . . . . . . . . . . . . . . 150
Convex Mirrors . . . . . . . . . . . . . . . . . . . . . . 29
Coolant Engine Temperature Gauge . . . . . . 105
Engine Temperature WarningLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Cooling System . . . . . . . . . . . . . . . . . . . . . 251
Cornering Lamps . . . . . . . . . . . . . . . . . . . 137
Courtesy Lamps . . . . . . . . . . . . . . . . . . . . . 138
Courtesy Transportation Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330
Cruise Control . . . . . . . . . . . . . . . . . . . . . . . 193 Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Cruise Control, Adaptive . . . . . . . . . . . 195
Cupholders . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Customer Assistance . . . . . . . . . . . . . . . 326 Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Text Telephone (TTY) Users . . . . . 326 Customer Information
Publications Ordering
Information . . . . . . . . . . . . . . . . . . . . . . 333
Customer Satisfaction Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 324
Cybersecurity . . . . . . . . . . . . . . . . . . . . . . . . 335
D
Damage Repair, Collision . . . . . . . . . . . 331
Danger, Warning, and Caution . . . . . . . . 3
Data Collection Infotainment System . . . . . . . . . . . . . 337
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
Data Recorders, Event . . . . . . . . . . . . . . 336
Daytime Running Lamps (DRL) . . . 135
Defensive Driving . . . . . . . . . . . . . . . . . . . 150
Delayed Locking . . . . . . . . . . . . . . . . . . . . . 19
Diagnostics Connected Services . . . . . . . . . . . . . . . 346
Differential, Limited-Slip . . . . . . . . . . . 193
Distracted Driving . . . . . . . . . . . . . . . . . . 149
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . 138
Door Ajar Light . . . . . . . . . . . . . . . . . . . . . . . . . 117
Delayed Locking . . . . . . . . . . . . . . . . . . . . 19
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Power Locks . . . . . . . . . . . . . . . . . . . . . . . . . 18
Drive Belt Routing, Engine . . . . . . . . . 323 Drive Systems
All-Wheel Drive . . . . . . . . . . . . . . 179, 260
Driver Assistance Systems . . . . . . . . . 204
Driver Information Center (DIC) . . . . . . . . . . . . . . . . . . . . . . . 117
Driver Mode Control . . . . . . . . . . . . . . . . 185
Driver Mode Control Light . . . . . . . . . 114
Driving Assistance Systems . . . . . . . . . . . . . . . 214
Better Fuel Economy . . . . . . . . . . . . . 149
Characteristics andTowing Tips . . . . . . . . . . . . . . . . . . . . . 230
Competitive . . . . . . . . . . . . . . . . . . . . . . . 191
Defensive . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Hill and Mountain Roads . . . . . . . . 157
If the Vehicle is Stuck . . . . . . . . . . . . 159
Loss of Control . . . . . . . . . . . . . . . . . . . . 152
Off-Road Recovery . . . . . . . . . . . . . . . . 152
Track Events and Competitive . . . 153
Vehicle Load Limits . . . . . . . . . . . . . . 160
Wet Roads . . . . . . . . . . . . . . . . . . . . . . . . . 156
Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . . . . . 142

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
350 INDEX
E
Electric Brake Boost . . . . . . . . . . . . . . . . 180
Electric Parking Brake . . . . . . . . . . . . . . 180
Electric Parking Brake Light . . . . . . . 110
Electrical Equipment, Add-On . . . . . 236
Electrical SystemEngine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Fuses and Circuit Breakers . . . . . . . 265
Instrument Panel Fuse Block . . . . 267
Overload . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270
Emergency
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 339
Engine Air Cleaner/Filter . . . . . . . . . . . . . . . . . 250
Check Light (MalfunctionIndicator) . . . . . . . . . . . . . . . . . . . . . . . . 108
Compartment Overview . . . . . . . . . . 243
Coolant Temperature Gauge . . . . . 105
Coolant Temperature Warning Light . . . . . . . . . . . . . . . . . . . 113
Cooling System . . . . . . . . . . . . . . . . . . . 251
Drive Belt Routing . . . . . . . . . . . . . . . . 323
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Oil Life System . . . . . . . . . . . . . . . . . . . . 248 Engine (cont'd)
Oil Pressure Light . . . . . . . . . . . . . . . . . 115
Overheating . . . . . . . . . . . . . . . . . . . . . . . 256
Power Messages . . . . . . . . . . . . . . . . . . 123
Running While Parked . . . . . . . . . . . 173
Starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . 139
Equipment, Towing . . . . . . . . . . . . . . . . . 235
Event Data Recorders . . . . . . . . . . . . . . 336
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . 139
Extended Parking . . . . . . . . . . . . . . . . . . . 172
Extender, Seat Belt . . . . . . . . . . . . . . . . . . 57
Exterior Lamp Controls . . . . . . . . . . . . 133
Exterior Lamps Off Reminder . . . . . . 135
Exterior Lighting Battery Saver . . . . 140
F
Filter,
Engine Air Cleaner . . . . . . . . . . . . . . . . 250
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . 135
Flashers, Hazard Warning . . . . . . . . . . 136
Flat Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291
Floor Mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Fluid Automatic Transmission . . . . . . . . . 249
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 258
Washer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Folding Mirrors . . . . . . . . . . . . . . . . . . . . . . 30 Forward Collision Alert (FCA)
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
Frequency Statement Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 334
Front Pedestrian Braking (FPB) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Front Seats
Heated and Ventilated . . . . . . . . . . . . . 46
Fuel Additives . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Economy, Driving for Better . . . . . 149
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . . . . . . 229
Filling the Tank . . . . . . . . . . . . . . . . . . . 228
Foreign Countries . . . . . . . . . . . . . . . . . 227
Gauge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Low Fuel Warning Light . . . . . . . . . 115
Management, Active . . . . . . . . . . . . . . 172
Prohibited Fuels . . . . . . . . . . . . . . . . . . 227
Recommended . . . . . . . . . . . . . . . 226, 227
Top Tier . . . . . . . . . . . . . . . . . . . . . . . . . . . 226
Fuses Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265
Fuses and Circuit Breakers . . . . . . . 265
Instrument Panel Fuse Block . . . . 267
Rear Compartment Fuse
Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 270

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
INDEX 351
G
Garage Door Opener . . . . . . . . . . . . . . . . 130Programming . . . . . . . . . . . . . . . . . . . . . . 130
Gas Strut(s) . . . . . . . . . . . . . . . . . . . . . . . . . 262
Gauges Engine Coolant Temperature . . . . 105
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Speedometer . . . . . . . . . . . . . . . . . . . . . . 104
Tachometer . . . . . . . . . . . . . . . . . . . . . . . 104
Trip Odometer . . . . . . . . . . . . . . . . . . . . 104
Warning Lights andIndicators . . . . . . . . . . . . . . . . . . . . . . . . 100
General Information
Service and Maintenance . . . . . . . . 306
Towing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230
Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . 239
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327
H
Hazard Warning Flashers . . . . . . . . . . 136
Head Restraints . . . . . . . . . . . . . . . . . . . . . . 40
Head-up Display . . . . . . . . . . . . . . . . . . . . 119
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . 136 Headlamps (cont'd)
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . . . . . 135
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 135
High-Beam On Light . . . . . . . . . . . . . . 116
High/Low Beam Changer . . . . . . . . . 135
Lamps On Reminder . . . . . . . . . . . . . . 116
Heated Steering Wheel . . . . . . . . . . . . . . . . . . . . . . 94
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Heated Mirrors . . . . . . . . . . . . . . . . . . . . . . . 31
Heater
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
High-Beam On Light . . . . . . . . . . . . . . . . 116
High-Speed Operation . . . . . . . . . . . . . . 280
Hill and Mountain Roads . . . . . . . . . . 157
Hill Start Assist (HSA) . . . . . . . . . . . . . 182
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
How to Wear Seat Belts Properly . . . 51
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
I
Ignition Positions . . . . . . . . . . . . . . . . . . . 164
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Indicator
Pedestrian Ahead . . . . . . . . . . . . . . . . . 112
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . 112
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Information Publication Ordering . . . . . . . . . . . . . 333
Infotainment . . . . . . . . . . . . . . . . . . . . . . . . 141
Infotainment System . . . . . . . . . . . . . . . 337
Instrument Cluster . . . . . . . . . . . . . . . . . 101
Instrument Panel Overview . . . . . . . . . . . 5
Interior Rearview Mirrors . . . . . . . . . . . 32
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jump Starting - North America . . . . 292
K
Keyless Entry Remote (RKE) System . . . . . . . . . . . . . . . 8
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
L
Labeling, Tire Sidewall . . . . . . . . . . . . . 275
Lamps Cornering . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Courtesy . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Daytime Running (DRL) . . . . . . . . . . 135
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
352 INDEX
Lamps (cont'd)Exterior Controls . . . . . . . . . . . . . . . . . . 133
Exterior Lamps Off Reminder . . . . 135
Exterior Lighting Battery
Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Malfunction Indicator (Check Engine) . . . . . . . . . . . . . . . . . . . . . . . . . . 108
On Reminder . . . . . . . . . . . . . . . . . . . . . . 116
Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Lane Change Alert (LCA) . . . . . . . . . . . 220
Lane Keep Assist (LKA) . . . . . . . . . . . . 222
Lane Keep Assist Light . . . . . . . . . . . . . 111
Lap-Shoulder Belt . . . . . . . . . . . . . . . . . . . . 53
LATCH System Replacing Parts after a Crash . . . . . . 84
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . . . . . . 77
LED Lighting . . . . . . . . . . . . . . . . . . . . . . . . 264
Light Performance Shifting . . . . . . . . . . . . . 111
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Illumination Control . . . . . . . . . . . . . . 137
LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264
Lights
Airbag Readiness . . . . . . . . . . . . . . . . . 106 Lights (cont'd)
Antilock Brake System (ABS)
Warning . . . . . . . . . . . . . . . . . . . . . . . . . 111
Automatic Vehicle Hold . . . . . . . . . . 111
Brake System Warning . . . . . . . . . . . 110
Charging System . . . . . . . . . . . . . . . . . . 107
Check Engine (Malfunction Indicator) . . . . . . . . . . . . . . . . . . . . . . . . 108
Cruise Control . . . . . . . . . . . . . . . . . . . . . 116
Door Ajar . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Driver Mode Control . . . . . . . . . . . . . . 114
Electric Parking Brake . . . . . . . . . . . . 110
Engine Coolant Temperature Warning . . . . . . . . . . . . . . . . . . . . . . . . . 113
Engine Oil Pressure . . . . . . . . . . . . . . . 115
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . 135
High-Beam On . . . . . . . . . . . . . . . . . . . . 116
High/Low Beam Changer . . . . . . . . . 135
Lane Keep Assist . . . . . . . . . . . . . . . . . . 111
Low Fuel Warning . . . . . . . . . . . . . . . . 115
Seat Belt Reminders . . . . . . . . . . . . . . 105
Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Service Electric Parking Brake . . . 110
StabiliTrak OFF . . . . . . . . . . . . . . . . . . . 113
Tire Pressure . . . . . . . . . . . . . . . . . . . . . . 114
Traction Control System (TCS)/StabiliTrak . . . . . . . . . . . . . . . . 113
Traction Off . . . . . . . . . . . . . . . . . . . . . . . 112 Limited-Slip Differential . . . . . . . . . . . . 193
Lock
Steering Column . . . . . . . . . . . . . . . . . . . . 27
Locks Automatic Door . . . . . . . . . . . . . . . . . . . . . 19
Delayed Locking . . . . . . . . . . . . . . . . . . . . 19
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Lockout Protection . . . . . . . . . . . . . . . . . 19
Power Door . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Loss of Control . . . . . . . . . . . . . . . . . . . . . . 152
Low Fuel Warning Light . . . . . . . . . . . 115
Low-Profile Tires . . . . . . . . . . . . . . . . . . . . 274
Lower Anchors and Tethers for
Children (LATCH System) . . . . . . . . . 77
Lumbar Adjustment . . . . . . . . . . . . . . . . . 42
Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 42
M
MaintenanceRecords . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319
Maintenance and Care Additional . . . . . . . . . . . . . . . . . . . . . . . . . 314
Maintenance Schedule . . . . . . . . . . . . . 308 Recommended Fluids andLubricants . . . . . . . . . . . . . . . . . . . . . . . 317
Malfunction Indicator Lamp . . . . . . . 108
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . 178