steering CADILLAC STS V 2007 1.G Workshop Manual

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.
375

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

Power Steering Fluid
SeeEngine
Compartment Overview
on page 373for
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.
How to Check Power Steering Fluid
To check the power steering uid, do the following:
1. Turn the ignition off and let the engine
compartment cool down.
2. Wipe the cap and the top of the
reservoir clean.
3. Unscrew the cap and wipe the dipstick with a
clean rag.
4. Replace the cap and completely tighten it.
5. Remove the cap again and look at the
uid level on the dipstick.
The level should be within the HOT mark. If
necessary, add only enough uid to bring the
level within the mark.
What to Use
To determine what kind of uid to use, see
Recommended Fluids and Lubricants on page 516.
Always use the proper uid. Failure to use the
proper uid can cause leaks and damage hoses
and seals.
403

(C) Aspect Ratio:A two-digit number that
indicates the tire height-to-width measurements.
For example, if the tire size aspect ratio is
60, as shown in item C of the illustration, it would
mean that the tire’s sidewall is 60 percent as
high as it is wide.
(D) Construction Code:A letter code is used to
indicate the type of ply construction in the tire.
The letter R means radial ply construction;
the letter D means diagonal or bias ply
construction; and the letter B means belted-bias
ply construction.
(E) Rim Diameter:Diameter of the wheel
in inches.
(F) Service Description:These characters
represent the load range and speed rating of the
tire. The load index represents the load carry
capacity a tire is certied to carry. The load index
can range from 1 to 279. The speed rating is
the maximum speed a tire is certied to carry a
load. Speed ratings range from A to Z.Tire Terminology and Denitions
Air Pressure:The amount of air inside the tire
pressing outward on each square inch of the
tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:This means the combined
weight of optional accessories. Some examples of
optional accessories are, automatic
transmission/transaxle, power steering, power
brakes, power windows, power seats, and
air conditioning.
Aspect Ratio:The relationship of a tire’s height
to its width.
Belt:A rubber coated layer of cords that is
located between the plies and the tread. Cords
may be made from steel or other reinforcing
materials.
Bead:The tire bead contains steel wires wrapped
by steel cords that hold the tire onto the rim.
Bias Ply Tire:A pneumatic tire in which the plies
are laid at alternate angles less than 90 degrees
to the centerline of the tread.
426

If a Tire Goes Flat
It is unusual for a tire to blowout while you are
driving, especially if you maintain your tires
properly. SeeTires on page 421. If air goes out of
a tire, It is much more likely to leak out slowly.
But if you should ever have a blowout, here are a
few tips about what to expect and what to do:
If a front tire fails, the at tire will create a drag that
pulls the vehicle toward that side. Take your
foot off the accelerator pedal and grip the steering
wheel rmly. Steer to maintain lane position,
and then gently brake to a stop well out of the
traffic lane.
A rear blowout, particularly on a curve, acts much
like a skid and may require the same correction
you would use in a skid. In any rear blowout,
remove your foot from the accelerator pedal. Get
the vehicle under control by steering the way
you want the vehicle to go. It may be very bumpy
and noisy, but you can still steer. Gently brake
to a stop, well off the road if possible.If a tire goes at, and your vehicle has a compact
spare tire, seeChanging a Flat Tire on page 464.
This information shows you how to use your
vehicle’s tire changing equipment and how
to change a at tire safely.
{CAUTION:
Lifting a vehicle and getting under it to do
maintenance or repairs is dangerous
without the appropriate safety equipment
and training. The jack provided with your
vehicle is designed only for changing a
at tire. If it is used for anything else, you
or others could be badly injured or killed
if the vehicle slips off the jack. Use the
jack provided with your vehicle only for
changing a at tire.
If your vehicle has 255/45ZR18 size tires, there is
no spare tire, jack, or tire changing equipment.
A tire inator kit, included with your vehicle, may
be used to seal small punctures in the tread
area of the tire. SeeTire Inator Kit on page 452.
451

Fuses Usage
LIC/DIMMINGLicense Plate, Instrument
Panel Dimming
IPM/ALDLInstrument Panel Module Assembly
Line Data Link Connector
HUDHeads-Up Display, Column Lock
Module, Steering Column Switch
V8 ECMV8 Engine Control Module (ECM),
Evap. Solenoid, Vacuum Bypass
ABS Anti-lock Brake Controller
STR RLY Starter Relay
WASH
NOZ/AQSHeated Washer Nozzles, Air
Quality Sensor
ODD COILSOdd Ignition Coils, Odd
Fuel Injectors
TCM IPCTransmission Control Module (TCM),
Instrument Panel, Engine Control
SPARE Spare
MAF Mass Air Flow Sensor (V6)
HIGH FAN Cooling Fan - High Speed
LOW FAN Cooling Fan - Low Speed
RT PARKPassenger’s Side Park Lamp,
Right TaillampFuses Usage
HORN Horn
LT HI BEAM Driver’s Side Headlamp High-Beam
LT LOW BEAM Driver’s Side Headlamp Low-Beam
RT LOW BEAMPassenger’s Side Headlamp
Low-Beam
RT HI BEAM Right Headlamp High-Beam
HFV6 ECMHigh Feature V6 Engine Control
Module (ECM), Mass Air Flow
Sensor (MAF) (V8)
Relays Usage
HDLP WASH
RELAY
JUMPER -OPTHeadlamp Washer
STARTER
RELAY MINIStarter
SPARE Spare
FOG LAMP
RELAY MICROFog Lamps
CMP CLU
RELAY MICROAir Conditioning Compressor
Clutch
490

Passenger’s Side
Fuses Usage
SPARE Spare
CANISTER
VENTCanister Vent Solenoid
RT TURN-RIM Right Turn Signal
SUNROOF
(OPT)Sunroof Module (Option)
STOP LAMPS Stoplamps
FUEL PUMP Fuel Pump
RF HTD
ST/S-BANDFront Passenger Heated Seat,
S-Band™ Antenna
RADIO/
ONSTARRadio/OnStar
®
AIR BAG Airbags
Fuses Usage
RIM Battery to Rear Integration Module
RUN/CRANKIgnition 1, Fog Lamps, Compressor
Clutch, Engine Run/Crank Relays
HTD STG/CLMHeated Steering Wheel, Column
Lock Module
REAR DEFOG Rear Defogger
INTERIOR
LAMPInterior Lamps
PSG DR MOD Front Passenger Door Module
LT TURN-RIM Left Turn Signal
REAR FOG
LAMP (OPT)Rear Fog Lamps (Option)
496

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 380. Reset oil life system.
SeeEngine Oil Life System on page 383.An Emission Control Service.••
Visually check for any leaks or damage.See footnote (k).••
Inspect engine air cleaner lter. If necessary, replace lter. SeeEngine Air
Cleaner/Filter on page 386.See footnote (m).•
Check tires for ination pressures and wear. SeeTires on page 421. If tire
rotation is recommended for your vehicle, rotate tires. SeeTire Inspection and
Rotation on page 438and “Tire Wear Inspection” inAt Least Once a Month on
page 513.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels. If you have the
4.4L V8 supercharged engine, check intercooler uid level. Add uid as
needed.••
Perform any needed additional services. See “Additional Required Services”
in this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
Replace passenger compartment air lter.See footnote (g).•
507

Maintenance Footnotes
†The U.S. Environmental Protection Agency or
the California Air Resources Board has determined
that the failure to perform this maintenance item
will not nullify the emission warranty or limit
recall liability prior to the completion of the
vehicle’s useful life. We, however, urge that all
recommended maintenance services be performed
at the indicated intervals and the maintenance
be recorded.
(a)Visually inspect brake lines and hoses for
proper hook-up, binding, leaks, cracks, chang,
etc. Inspect disc brake pads for wear and rotors for
surface condition. Inspect other brake parts,
including calipers, parking brake, etc.
(b)Visually inspect front and rear suspension and
steering system for damaged, loose, or missing
parts or signs of wear. Inspect power steering lines
and hoses for proper hook-up, binding, leaks,
cracks, chang, etc.(c)Visually inspect hoses and have them replaced
if they are cracked, swollen, or deteriorated.
Inspect all pipes, ttings, and clamps; replace with
genuine GM parts as needed. To help ensure
proper operation, a pressure test of the cooling
system and pressure cap and cleaning the outside
of the radiator and air conditioning condenser is
recommended at least once a year.
(d)Visually inspect wiper blades for wear or
cracking. Replace wiper blades that appear worn
or damaged or that streak or miss areas of
the windshield.
(e)Make sure the safety belt reminder light and all
your belts, buckles, latch plates, retractors, and
anchorages are working properly. Look for any
other loose or damaged safety belt system parts. If
you see anything that might keep a safety belt
system from doing its job, have it repaired. Have
any torn or frayed safety belts replaced. Also look
for any opened or broken airbag coverings, and
have them repaired or replaced. The airbag system
does not need regular maintenance.
510