2004 CADILLAC SRX cooling

A. Underhood Fuse Block. SeeFuses and Circuit
Breakers on page 5-103.
B. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-38.
C. Battery. SeeBattery on page 5-43.
D. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-37.
E. Engine Oil Fill Cap. SeeEngine Oil on page 5-15.F. Engine Oil Dipstick. SeeEngine Oil on page 5-15.
G. Brake Master Cylinder Reservoir. SeeBrakes
on page 5-40.
H. Engine Coolant Surge Tank and Pressure Cap. See
Coolant Surge Tank Pressure Cap on page 5-28
andCooling System on page 5-31.
I. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-22.
5-13

A. Underhood Fuse Block. SeeFuses and Circuit
Breakers on page 5-103.
B. Battery. SeeBattery on page 5-43.
C. Passenger Compartment Air Filter. SeePassenger
Compartment Air Filter on page 3-34.
D. Windshield Washer Fluid Reservoir. SeeWindshield
Washer Fluid on page 5-38.
E. Power Steering Fluid Reservoir. SeePower Steering
Fluid on page 5-37.
F. Engine Oil Fill Cap. SeeEngine Oil on page 5-15.
G. Engine Oil Dipstick. SeeEngine Oil on page 5-15.
H. Brake Master Cylinder Reservoir. SeeBrakes
on page 5-40.
I. Engine Coolant Surge Tank and Pressure Cap. See
Coolant Surge Tank Pressure Cap on page 5-28
andCooling System on page 5-31.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 5-22.Engine Oil
If the oil pressure light
and/or the Oil Pressure
Low — Stop Engine
message on the DIC
appears on the instrument
cluster, it means you
need to check your engine
oil level right away.
For more information, see “Oil Pressure Low — Stop
Engine” underDIC Warnings and Messages on
page 3-64andOil Pressure Light on page 3-48.
You should check your engine oil level regularly; this is
an added reminder.
5-15

Navigation System
To reset the transmission uid life indicator, use the
following steps:
1. Turn the vehicle on with the ignition in RUN.
2. Turn the Navigation system on by pressing the
PWR/VOL knob.
3. Press and hold the vehicle information button in the
upper right corner of the screen for three seconds.
This will bring up the Vehicle Information menu.
4. Use the up and down arrows to scroll through the
items until you get to Transmission Fluid Life.
5. Press and hold the RESET button on the screen
until the Transmission Fluid Life is reset to
100 percent.
Repeat this procedure if the Transmission Fluid Life
does not reset.
6. Press the RETURN button on the screen to return
to the main screen.
Engine Coolant
The cooling system in your vehicle is lled with
DEX-COOL®engine coolant. This coolant is designed
to remain in your vehicle for 5 years or 150,000 miles
(240 000 km), whichever occurs rst, if you add
only DEX-COOL
®extended life coolant.
The following explains your cooling system and how to
add coolant when it is low. If you have a problem
with engine overheating, seeEngine Overheating on
page 5-28.
A 50/50 mixture of clean, drinkable water and
DEX-COOL
®coolant will:
Give freezing protection down to−34° F (−37° C).
Give boiling protection up to 265° F (129° C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as
they should.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-25

What to Use
Use a mixture of one-halfclean, drinkable waterand
one-half DEX-COOL®coolant which won’t damage
aluminum parts. If you use this coolant mixture,
you don’t need to add anything else.
{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice:If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice:If you use the proper coolant, you do not
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.
5-26

Cooling System
When you decide it’s safe to lift the hood, here’s what
you’ll see:
A. Electric Engine Cooling Fan(s)
B. Coolant Surge Tank and Pressure Cap{CAUTION:
An electric engine cooling fan under the hood
can start up even when the engine is not
running and can injure you. Keep hands,
clothing and tools away from any underhood
electric fan.
If the coolant inside the coolant surge tank is boiling,
don’t do anything else until it cools down. The vehicle
should be parked on a level surface.
3.6L V6 shown
5-31

When the engine is cold, the coolant level should be at
or slightly above the FULL COLD/FROID line on the
side of the coolant surge tank. If it isn’t, you may have a
leak at the pressure cap or in the radiator hoses,
heater hoses, radiator, water pump or somewhere else
in the cooling system.
{CAUTION:
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 re, and you could be
burned. Get any leak xed before you drive the
vehicle.
If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running. If they aren’t, your vehicle needs service.
Notice:Engine damage from running your engine
without coolant is not covered by your warranty.
Notice:Using coolant other than DEX-COOL
®may
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs rst. Any repairs
would not be covered by your warranty. Always use
DEX-COOL
®(silicate-free) coolant in your vehicle.
5-32

How to Add Coolant to the Coolant
Surge Tank
If you haven’t found a problem yet, check to see if
coolant is visible in the surge tank. If coolant is visible
but the coolant level isn’t at the FULL COLD/FROID line
on the side of the coolant surge tank, add a
50/50 mixture ofclean, drinkable waterand 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. SeeEngine
Coolant on page 5-25for more information.
{CAUTION:
Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the coolant
surge tank pressure cap — even a little — they
can come out at high speed. Never turn the
cap when the cooling system, including the
coolant surge tank pressure cap, is hot. Wait
for the cooling system and coolant surge tank
pressure cap to cool if you ever have to turn
the pressure cap.
5-33

{CAUTION:
Adding only plain water to your cooling
system can be dangerous. Plain water, or
some other liquid such as alcohol, can boil
before the proper coolant mixture will. Your
vehicle’s coolant warning system is set for the
proper coolant mixture. With plain water or the
wrong mixture, your engine could get too hot
but you would not get the overheat warning.
Your engine could catch re and you or others
could be burned. Use a 50/50 mixture of clean,
drinkable water and DEX-COOL
®coolant.Notice: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.
{CAUTION:
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.
5-34