2020 CADILLAC CT5 engine overheat

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-13060105) -
2020 - CRC - 2/14/20
256 VEHICLE CARE
5. Replace the pressure cap tightly.
6. Check the level in the surge tankafter the engine is shut off and
the cooling system has cooled
down. If the coolant is not at the
proper level, repeat Steps 1–6.
If the coolant still is not at the
proper level when the system
cools down again, see your
dealer.
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 an indicator to warn
of the engine overheating.
If the decision is made not to lift the
hood when this warning appears, get
service help right away. See Roadside
Service 0328. 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,
(Continued)
Warning (Continued)
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.

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
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 353
Massage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Memory Seats . . . . . . . . . . . . . . . . . . . . . . . . 44
MessagesEngine Power . . . . . . . . . . . . . . . . . . . . . 123
Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Vehicle Speed . . . . . . . . . . . . . . . . . . . . . 124
Mirror
Rear Camera . . . . . . . . . . . . . . . . . . . . . . . . 32
Mirrors Automatic Dimming . . . . . . . . . . . . . . . . 31
Automatic Dimming Rearview . . . . . 32
Convex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Folding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Heated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Manual Rearview . . . . . . . . . . . . . . . . . . . 32
Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Tilt in Reverse . . . . . . . . . . . . . . . . . . . . . . 31
Mirrors, Interior Rearview . . . . . . . . . . . 32
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185 Driver Control . . . . . . . . . . . . . . . . . . . . . 185
Monitor System, Tire Pressure . . . . . 281
N
Navigation
Connected Services . . . . . . . . . . . . . . . 344
New Vehicle Break-In . . . . . . . . . . . . . . . 163
O
Odometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Odometer (cont'd)
Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
Off-Road Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Engine Oil Life System . . . . . . . . . . . 248
Pressure Light . . . . . . . . . . . . . . . . . . . . . 115
Older Children, Restraints . . . . . . . . . . . 70
Online Owner Center . . . . . . . . . . . . . . . 327
OnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337
OnStar Additional Information . . . . 340
OnStar Emergency . . . . . . . . . . . . . . . . . . 339
OnStar Overview . . . . . . . . . . . . . . . . . . . . 338
OnStar Security . . . . . . . . . . . . . . . . . . . . . 339
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Overheating, Engine . . . . . . . . . . . . . . . . 256
Overview Instrument Panel . . . . . . . . . . . . . . . . . . . . 5
P
ParkShifting Out of . . . . . . . . . . . . . . . . . . . . 170
Park Assist . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Parking Brake and P (Park)Mechanism Check . . . . . . . . . . . . . . . 261 Parking (cont'd)
Extended . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Over Things That Burn . . . . . . . . . . . 171
Parking or Backing Assistance Systems . . . . . . . . . . . . . . . 205
Passenger Airbag Status Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Passenger Compartment Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Passenger Sensing System . . . . . . . . . . 65
Pedestrian Ahead Indicator . . . . . . . . 112
Perchlorate Materials Requirements, California . . . . . . . . . 240
Performance Shifting Light . . . . . . . . 111
Personalization Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124
Power Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Protection, Battery . . . . . . . . . . . . . . . . 140
Retained Accessory (RAP) . . . . . . . . 169
Seat Adjustment . . . . . . . . . . . . . . . . . . . . 41
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Pregnancy, Using Seat Belts . . . . . . . . . 57
Privacy Vehicle Data Recording . . . . . . . . . . 335