2007 CADILLAC STS coolant reservoir

After you have removed the sight shields (if equipped) on the 3.6L V6 engine, here is what you will see:
A. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 488.
B. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 404.
C. Battery. SeeBattery on page 408.
D. Passenger Compartment Air Filter. See
Passenger Compartment Air Filter on page 239.
E. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 403.
F. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 380.G. Engine Oil Dipstick (Out of View). See
“Checking Engine Oil” underEngine Oil on
page 380.
H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 405.
I. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on
page 393andCooling System on page 396.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 386.
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After you have removed the sight shields (if equipped) on the 4.6L V8 engine, here is what you will see:
A. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 488.
B. Battery. SeeBattery on page 408.
C. Passenger Compartment Air Filter. See
Passenger Compartment Air Filter on page 239.
D. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 404.
E. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 403.
F. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 380.G. Engine Oil Dipstick (Out of View). See
“Checking Engine Oil” underEngine Oil on
page 380.
H. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 405.
I. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on
page 393andCooling System on page 396.
J. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 386.
377

After you have removed the sight shields (if equipped) on the 4.4L V8 STS-V engine, here is what
you will see:
A. Battery. SeeBattery on page 408.
B. Underhood Fuse Block. SeeUnderhood Fuse
Block on page 488.
C. Passenger Compartment Air Filter. See
Passenger Compartment Air Filter on page 239.
D. Windshield Washer Fluid Reservoir. See
“Adding Washer Fluid” underWindshield
Washer Fluid on page 404.
E. Intercooler System Pressure Cap. SeeEngine
Coolant on page 389.
F. Power Steering Fluid Reservoir. SeePower
Steering Fluid on page 403.
G. Engine Oil Fill Cap. See “When to Add Engine
Oil” underEngine Oil on page 380.
H. Engine Oil Dipstick (Out of View). See
“Checking Engine Oil” underEngine Oil on
page 380.I. Brake Master Cylinder Reservoir. See “Brake
Fluid” underBrakes on page 405.
J. Engine Coolant Surge Tank and Pressure Cap.
SeeCoolant Surge Tank Pressure Cap on
page 393andCooling System on page 396.
K. Engine Air Cleaner/Filter. SeeEngine Air
Cleaner/Filter on page 386.
If your vehicle is equipped with front compartment
underhood sight shields, before closing the
hood be sure to reinstall the sight shields. To
reinstall the shields, locate the tabs on the left and
right sides and insert them into the openings in
the tower to tower brace. Then insert the fasteners
into the top of the shield and push the fasteners
back into place.
379

Windshield Washer Fluid
What to Use
When you need windshield washer uid, be sure
to read the manufacturer’s instructions before
use. If you will be operating your vehicle in an area
where the temperature may fall below freezing,
use a uid that has sufficient protection against
freezing.
Adding Washer Fluid
The CHECK WASHER FLUID message will
appear on the Driver Information Center (DIC)
when the uid level is low. SeeDIC Warnings and
Messages on page 264for more information.
Open the cap with the
washer symbol on it.
Add washer uid
until the tank is full. See
Engine Compartment
Overview on page 373
for reservoir location.Notice:
When using concentrated washer uid,
follow the manufacturer’s instructions
for adding water.
Do not mix water with ready-to-use washer
uid. Water can cause the solution to
freeze and damage your washer uid tank
and other parts of the washer system.
Also, water does not clean as well
as washer uid.
Fill your washer uid tank only
three-quarters full when it is very cold.
This allows for expansion if freezing
occurs, which could damage the tank if it
is completely full.
Do not use engine coolant (antifreeze) in
your windshield washer. It can damage
your washer system and paint.
404

At Each Fuel Fill
It is important to perform these underhood checks
at each fuel ll.
Engine Oil Level Check
Check the engine oil level and add the proper oil
if necessary. SeeEngine Oil on page 380for
further details.
Notice:It is important to check the engine oil
regularly and keep it at the proper level.
Failure to keep the engine oil at the proper
level can cause damage to the engine not
covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. See
Engine Coolant on page 389for further details.
Intercooler Coolant Level Check
(4.4L Supercharged Engine)
Check the coolant level and add DEX-COOL®
coolant mixture if necessary. SeeEngine Coolant
on page 389for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in
the windshield washer uid reservoir and add the
proper uid if necessary.
At Least Once a Month
Tire Ination Check
Visually inspect your vehicle’s tires and make sure
they are inated to the correct pressures. Do not
forget to check the spare tire. SeeInation - Tire
Pressure on page 431. Check to make sure the
spare tire is stored securely. SeeChanging a Flat
Tire on page 464.
Tire Wear Inspection
Tire rotation is recommended if your vehicle has
the same size tires at all four wheel positions
and may be required for high mileage highway
drivers prior to the Engine Oil Life System service
notication. Check the tires for wear and, if
necessary, rotate the tires. SeeTire Inspection
and Rotation on page 438.
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