2007 CADILLAC SRX cooling

Notice:Using coolant other than DEX-COOL®
may cause premature engine, heater core,
or radiator corrosion. In addition, the engine
coolant could 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.
How to Add Coolant to the Coolant
Surge Tank
If you have not found a problem yet, check to see
if coolant is visible in the surge tank. If coolant
is visible but the coolant level is not 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 368for 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.
376

{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.
If no coolant is visible in the surge tank, add
coolant as follows:
1. You can remove the coolant surge tank
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
(left) about one-quarter turn and then stop.
If you hear a hiss, wait for that to stop. A hiss
means there is still some pressure left.
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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. The
upper radiator hose is the largest of the
hoses which comes out of the radiator, on the
passenger’s side of the vehicle. Watch out
for the engine cooling fans.
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 FULL COLD/FROID line on the
side of the coolant surge tank.
5. Then replace the pressure cap. Be sure the
pressure cap is hand-tight and fully seated.
Recheck the coolant level in the bottle next time
you use your vehicle to insure the system is
full when cold. SeeEngine Coolant on page 368.Power Steering Fluid
SeeEngine
Compartment Overview
on page 356for
reservoir location.
When to Check Power Steering Fluid
It is not necessary to regularly check power
steering uid unless you suspect there is a leak in
the system or you hear an unusual noise. A
uid loss in this system could indicate a problem.
Have the system inspected and repaired.
379

Wheel Replacement
Replace any wheel that is bent, cracked, or badly
rusted or corroded. If wheel nuts keep coming
loose, the wheel, wheel bolts, and wheel nuts
should be replaced. If the wheel leaks air, replace it
(except some aluminum wheels, which can
sometimes be repaired). See your dealer if any of
these conditions exist.
Your dealer will know the kind of wheel you need.
Each new wheel should have the same
load-carrying capacity, diameter, width, offset and
be mounted the same way as the one it replaces.
If you need to replace any of your wheels, wheel
bolts, or wheel nuts, replace them only with new
GM original equipment parts. This way, you will be
sure to have the right wheel, wheel bolts, and wheel
nuts for your vehicle.{CAUTION:
Using the wrong replacement wheels,
wheel bolts, or wheel nuts on your vehicle
can be dangerous. It could affect the
braking and handling of your vehicle, make
your tires lose air and make you lose
control. You could have a collision in
which you or others could be injured.
Always use the correct wheel, wheel bolts,
and wheel nuts for replacement.
Notice:The wrong wheel can also cause
problems with bearing life, brake cooling,
speedometer or odometer calibration, headlamp
aim, bumper height, vehicle ground clearance,
and tire or tire chain clearance to the body and
chassis.
SeeChanging a Flat Tire on page 424for more
information.
421

Relays Usage
FAN 2 HC
MICRORight Side Engine Cooling
Fan Motors
FAN S/P HC
MICROSeries/Parallel Engine
Cooling FanRelays Usage
FRNT
WASHER SS
MICROFront Washer Pump
FAN 1 HC
MICROLeft Side Engine Cooling
Fan Motors
456

Relays Usage
FOG LAMP SS
MICROFront Fog Lamps
SPARE Spare
IGN MAIN SS
MICROIgnition Switch (ON)
STRTR HC
MICROStarter Solenoid
PWR/TRN HC
MICROPowertrain/Engine Control Module
HI BEAM SS
MICROHigh-Beam Headlamps
BLWR HC
MICROFront Blower Motor Assembly
WPR HC
MICROWindshield Wiper System - On/Off
WPR HI HC
MICROWindshield Wiper System -
Low/High
HEAD LAMP
WASH HC
MICROHeadlamp Washer Pump (Option)
LO BEAM-LP
MICRO/HID-HC
MICROLow-Beam Headlamps
REAR WASH
SS MICRORear Washer PumpRelays Usage
HORN SS
MICROHorn
A/C CMPRSR
CLTCH SS
MICROAir Conditioning Compressor Clutch
FUEL PUMP
SS MICROFuel Pump
ACCY SS
MICROAccessory Power (Rear Wipers,
Inside Rearview Mirror)
J Case Fuses Usage
FAN 2 Right Cooling Fan Motor
SPARE Spare
FAN 1 Left Cooling Fan Motor
SPARE Spare
STRTR Starter Solenoid
LPDB 2LRPDB (Left Side Rear
Power Distribution Box)
ABS MOTOR Anti-lock Brake System Module
LPDB 1LRPDB (Left Side Rear
Power Distribution Box)
RPDB 1RRPDB (Right Side Rear
Power Distribution Box)
SPARE Spare
457

J Case Fuses Usage
BLWR Front Blower Motor Assembly
RPDB 2RRPDB (Right Side Rear
Power Distribution Box)
Mini Fuses Usage
FRNT
WASHERFront Washer Pump
SPARE Spare
SPARE Spare
AIRBAGSensing Diagnostic Module (SDM),
Occupant Sensor Display,
Instrument Cluster
ABS IGNAnti-lock Braking System Ignition,
Variable Effort Steering
IGN SW Ignition Switch, Immobilizer Module
ECM/TCM IGNEngine Control Module/Transmission
Control Module Ignition Power
MISC IGN Air Quality Sensor
EMISSION 1Pre 02 Sensors, Cam Phasor (V6),
Canister Purge (V6), Intake Manifold
Tuning Valve (V6)
SPARE Spare
Mini Fuses Usage
DISPLAYInstrument Panel Cluster, Climate
Control Module, Front Blower Relay,
Diagnostic Link Connector
BCM 2LED Instrument Panel Dimming,
Overhead Lamps, Vanity Lamps
EVEN COILSEven Ignition Coils, Even Fuel
Injectors
BCM 6Right Side Rear Stoplamp, Turn
Lamps, Key Capture Solenoid
RADIO Radio
ODD COILSOdd Ignition Coils, Odd Fuel
Injectors
BCM 1 Body Control Module (BCM) Power
LT HI BEAM Left Side High-Beam Headlamp
BCM 7/CLOCK Switch Dimming, Analog Clock
SPARE Spare
EMISSION 2Cooling Fan Relays, Air
Conditioning Clutch Relay, Post O2
Sensors, Mass Airow Sensor,
Canister Purge (V8)
ECM BATT Engine Control Module (ECM)
458

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 480for more information.
ApplicationCapacities
English Metric
Air Conditioning RefrigerantFor the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer for more
information.
Automatic Transmission (Pan Removal and Replacement)
5-Speed Automatic 7.4 qt 7.0 L
6-Speed Automatic 7.3 qt 6.9 L
Cooling System
3.6L V6 11.7 qt 11.1 L
4.6L V8 12.5 qt 11.8 L
Engine Oil with Filter
3.6L V6 6.0 qt 5.7 L
4.6L V8 8.0 qt 7.6 L
464