2015 CADILLAC SRX cooling

Black plate (12,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
10-12 Vehicle Care
9. Reconnect outlet duct to thecover and tighten the air duct
clamp (1).
10. Reconnect the electrical connector (2). Install connector
lock clip to the bottom of
connector.
{Warning
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
{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 you are driving.
Cooling System
1. Engine Cooling Fan (Out
of View)
2. Engine Coolant Surge Tank and Pressure Cap
{Warning
An electric engine cooling fan
under the hood 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.
If the coolant inside the coolant
surge tank is boiling, do not do
anything else until it cools down.
The vehicle should be parked on a
level surface.
The coolant level should be
between the MIN and MAX lines.
If it is not, the vehicle may have a
leak at the radiator hoses, heater
hoses, radiator, water pump,
or somewhere else in the cooling
system.

Black plate (13,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
Vehicle Care 10-13
{Warning
Heater and radiator hoses, and
other engine parts, can be very
hot. Do not touch them. If you do,
you can be burned.
Do not run the engine if there is a
leak. If you run the engine, it
could lose all coolant. That could
cause an engine fire, and you
could be burned. Get any leak
fixed before you drive the vehicle.
If there seems to be no leak, with
the engine on, check to see if the
engine cooling fan is running. If the
engine is overheating, the fan
should be running. If it is not, the
vehicle needs service. Turn off the
engine.
{Caution
Using coolant other than
DEX-COOL®can cause
premature engine, heater core,
or radiator corrosion. In addition,
the engine coolant could require
changing sooner. Any repairs
would not be covered by the
vehicle warranty. Always use
DEX-COOL (silicate-free) coolant
in the vehicle.
Engine Coolant
The cooling system in the vehicle is
filled with DEX-COOL®engine
coolant. This coolant needs to be
checked and replaced at
appropriate intervals. See
Maintenance Schedule on
page 11-3. 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 on
page 10-16.
What to Use
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.

Black plate (14,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
10-14 Vehicle Care
Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
coolant. If using this mixture,
nothing else needs to be added.
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
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
(Continued)
Caution (Continued)
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants on page 11-13.
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. 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 is not at the
indicated mark, add a 50/50 mixture
of clean, drinkable water and
DEX-COOL coolant at the coolant
surge tank, but be sure the cooling
system is cool before this is done.
See
Engine Overheating on
page 10-16.
The coolant surge tank is located in
the engine compartment on the
driver side of the vehicle. See
Engine Compartment Overview on
page 10-5.

Black plate (15,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
Vehicle Care 10-15
How to Add Coolant to the
Coolant Surge Tank
{Caution
This vehicle has a specific
coolant fill procedure. Failure to
follow this procedure could cause
the engine to overheat and be
severely damaged.
If no problem is found, check to see
if coolant is visible in the coolant
surge tank. If coolant is visible but
the coolant level is not at the
indicated level mark, add a 50/
50 mixture of clean, drinkable water
and DEX-COOL coolant at the
coolant surge tank, but be sure the
cooling system, including the
coolant surge tank pressure cap, is
cool before you do it.
{Warning
Steam and scalding liquids from a
hot cooling system can blow out
and burn you badly. Never turn
the cap when the cooling system,
including the surge tank pressure
cap, is hot. Wait for the cooling
system and surge tank pressure
cap to cool.
{Warning
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warning system is set
for the proper coolant mixture.
With plain water or the wrong
mixture, the engine could get too
hot but you would not get the
overheat warning. The engine (Continued)
Warning (Continued)
could catch fire and you or others
could be burned. Use a 50/
50 mixture of clean, drinkable
water and DEX-COOL coolant.
{Caution
In cold weather, water can freeze
and crack the engine, radiator,
heater core, and other parts. Use
the recommended coolant and
the proper coolant mixture.
{Warning
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.

Black plate (16,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
10-16 Vehicle Care
1. Remove the coolant surge tankpressure 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 about
one-quarter of a turn. 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. 3. Fill the coolant 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 to the coolant surge tank
until the level reaches the
indicated level mark.
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
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
possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
Engine Overheating
The vehicle has an indicator to warn
of engine overheating.
There is an engine coolant
temperature warning light on the
vehicle's instrument cluster. See
Engine Coolant Temperature Gauge
on page 5-12.
If the decision is made not to lift the
hood when this warning appears,
but instead get service help right
away. See Roadside Service on
page 13-5.
If the decision is made to lift the
hood, make sure the vehicle is
parked on a level surface.

Black plate (17,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
Vehicle Care 10-17
Then check to see if the engine
cooling fans are running. If the
engine is overheating, both fans
should be running. If they are not,
do not continue to run the engine
and have the vehicle serviced.
{Caution
Running the engine without
coolant may cause damage or a
fire. Vehicle damage would not be
covered by the vehicle warranty.
If Steam Is Coming from the
Engine Compartment
{Warning
Steam from an overheated engine
can burn you badly, even if you
just open the hood. Stay away
from the engine if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down.(Continued)
Warning (Continued)
Wait until there is no sign of
steam or coolant before you open
the hood.
If you keep driving when the
engine is overheated, the liquids
in it can catch fire. You or others
could be badly burned. Stop the
engine if it overheats, and get out
of the vehicle until the engine
is 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.
.Tows a trailer.
If the overheat warning displays 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 temperature overheat gauge is
no longer in the overheat zone or an
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.

Black plate (34,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
10-34 Vehicle Care
Engine Compartment Fuse Block
The vehicle may not be equipped
with all of the fuses, relays, and
features shown. J-CaseFuses Usage
6 Wiper
12 Vacuum Pump J-Case
Fuses Usage
24 Antilock Brake System Pump
25 Rear Electrical Center 1 J-Case
Fuses Usage
26 Rear Electrical Center 2
41 Cooling Fan 2
42 Starter
45 Cooling Fan 1
Mini Fuses Usage 1 Engine Control Module Battery
2 Transmission Control Module
Battery
5 Engine Control Module Run Crank
7 Post-Catalytic Converter O2
Sensor
8 Pre-Catalytic Converter O2
Sensor

Black plate (35,1)Cadillac SRX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
7707476) - 2015 - crc - 4/8/14
Vehicle Care 10-35
Mini Fuses Usage9 Engine Control Module Powertrain
10 Fuel Injectors –Even
11 Fuel Injectors –Odd
13 Washer
14 Heated Steering Wheel
15 Not Used
16 Instrument Cluster/ Malfunction Indicator
Lamp/Ignition
17 Air Quality Sensor
18 Not Used
19 Transmission Control Module Run
Crank
20 Rear Electrical Center Run Crank
30 Switch Back Light Mini Fuses Usage
32 Battery Sense (Regulated Voltage
Control)
33 Adaptive Forward Lighting
35 Electronic Brake Control Module
36 Air Conditioning Compressor Clutch
46 Low-Beam Headlamp –Right
47 Low-Beam Headlamp –Left
50 Front Fog Lamps
51 Horn
52 Fuel System Control Module
53 Headlamp Level
54 Sensing Diagnostic Module Ignition Mini Fuses Usage
55 High-Beam Headlamp –Right
56 High-Beam Headlamp –Left
57 Ignition Steering Column Lock
65 Trailer Right Stoplamp
66 Trailer Left Stoplamp
67 Spare
68 Spare
69 Spare
70 Spare
71 Spare
72 Spare
Mini Relays Usage 7 Powertrain
9 Cooling Fan 2
13 Cooling Fan 1