radiator CADILLAC CT5 2023 Owners Manual

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Vehicle Care 393
3.0L V6 Engine
1. Engine Coolant SurgeTank and Pressure Cap
2. Engine Cooling Fan (Out of View)
6.2L V8 Engine
1. Engine Coolant Surge
Tank and 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.
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.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
394 Vehicle Care
Engine Coolant
The cooling system in the
vehicle is filled with
DEX-COOL engine coolant.
See Maintenance Schedule
0471 and
Recommended Fluids and
Lubricants 0476.
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 0398.
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
(Continued)
Caution (Continued)
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 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.
It is normal to see coolant
moving in the upper coolant
hose return line when the
engine is running. It is also
normal to see bubbles
entering the surge tank
through the small hose.

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/6/22
Vehicle Care 397
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.
3.0L V6 Engine and 6.2L
V8 Engine
1. Remove the coolant surgetank pressure cap when
the cooling system,
including the coolant surge
tank pressure cap and
upper radiator hose, is no
longer hot. Turn the pressure cap
slowly counterclockwise.
If you hear a hiss, wait for
that to stop. This will allow
any pressure still left to be
vented out the
discharge hose.
2. Keep turning the pressure cap slowly and remove it.
2.0L L4 Engine and 3.0L V6 Engine Coolant Surge Tank
6.2L V8 Engine Coolant Surge Tank
3. Fill the surge tank with the proper mixture to the
indicated level mark.
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 fan.
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

Cadillac CT5 Owner Manual (GMNA-Localizing-U.S./Canada-16500419) -
2023 - CRC - 5/11/22
520 INDEX
Performance (cont'd)Shifting Light . . . . . . . . . . . . . . . . 129
Phone Apple CarPlay andAndroid Auto . . . . . . . . . . . . . . . 212
Bluetooth . . . . . . . . . . . . . 206, 207
Port
USB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Positioning Vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 191
Power Door Locks . . . . . . . . . . . . . . . . . . . . . 21
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Outlets . . . . . . . . . . . . . . . . . . . . . . . . 108
Protection, Battery . . . . . . . . 160
Retained
Accessory (RAP) . . . . . . . . . . 273
Seat Adjustment . . . . . . . . . . . . . 44
Windows . . . . . . . . . . . . . . . . . . . . . . . 38
Pregnancy, Using Seat Belts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Privacy Vehicle DataRecording . . . . . . . . . . . . . . . . . . 498
Problems with Route Guidance . . . . . . . . . . . . . . . . . . . . . . 192 Program
Courtesy
Transportation . . . . . . . . . . . 492
Prohibited Fuels . . . . . . . . . . . . . . 361
Proposition 65 Warning California . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Proposition
65 Warning, California . . . 452
Publication Ordering Information . . . . . . . . . . . . . . . . . . 496
R
Radiator . . . . . . . . . . . . . . . . . . . . . . . . 392
RadioAM-FM Radio . . . . . . . . . . . . . . . . 169
Data System (RDS) . . . . . . . . . 172
Frequency Statement . . . . 496
HD Radio Technology . . . . . . 171
Reception . . . . . . . . . . . . . . . . . . . . . 173
Satellite . . . . . . . . . . . . . . . . . . . . . . . 172
Reading Lamps . . . . . . . . . . . . . . . 157
Rear
Camera Mirror . . . . . . . . . . . . . . . . 35
Cross Traffic Alert(RCTA) System . . . . . . . . . . . 346
Pedestrian Alert . . . . . . . . . . . 344
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Vision Camera (RVC) . . . . . 336 Rearview Mirrors . . . . . . . . . . . . . . 35
Automatic Dimming . . . . . . . . . 35
Reclining Seatbacks . . . . . . . . . . 45
Recognition Voice . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Recommended Fuel . . . . . . . . . . . . . . . . . . . . . . 360, 361
Recommended Fluids and Lubricants . . . . . . . . . . . . . 476
Recorder Surround Video . . . . . . . . . . . . 358
Records Maintenance . . . . . . . . . . . . . . . . 479
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . . . . . . 457
Reimbursement
Program, GM Mobility . . . . 489
Remote Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Key Operation . . . . . . . . . . . . . . . . . . 9
Vehicle Start . . . . . . . . . . . . . . . . . . . 16
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . . . 78
Maintenance . . . . . . . . . . . . . . . . . 477
Replacing
Airbag System . . . . . . . . . . . . . . . 78
LATCH System PartsAfter a Crash . . . . . . . . . . . . . . . 93