2005 CADILLAC STS tire pressure

Buying New Tires
To nd out what kind and size of tires you need, look at
the Tire and Loading Information label. SeeLoading
Your Vehicle on page 4-30, for an example of the label
and where it can be found on your vehicle.
The tires installed on your vehicle when it was new had a
Tire Performance Criteria Specication (TPC Spec)
number on each tire’s sidewall. When you get new tires,
GM recommends that you get tires with that same TPC
Spec number. That way your vehicle will continue to have
tires that are designed to give proper endurance,
handling, speed rating, load range, traction, ride, tire
pressure monitoring system performance and other
things during normal service on your vehicle. If your tires
have an all-season tread design, the TPC number will be
followed by an “MS” (for mud and snow).
The optional 18-inch performance tires, size 255/
45ZR18 99Y, used on some vehicles, meet the General
Motors Tire Performance Criteria Specication (TPC
Spec) rating but the TPC Spec code has not been molded
onto the tire’s sidewall. If your vehicle has these tires,
and you need to replace them, you can still get these
TPC spec rated tires by asking your GM dealer.Your GM dealer can order these tires by part number.
This way, your vehicle will continue to give the proper
endurance, handling, traction, and ride as the original
tires.
If you replace your tires with those not having a TPC
Spec number, make sure they are the same size,
load range, speed rating and construction type (bias,
bias-belted or radial) as your original tires.
Winter tires with the same speed rating as your original
equipment tires may not be available for H, V, W
and ZR speed rated tires. If you choose snow tires with
a lower speed rating, never exceed the tire’s maximum
speed capability.
If you replace your vehicle’s tires with those not having
a TPC Spec number, the tire pressure monitoring
system may give an inaccurate low-pressure warning.
Non-TPC Spec tires may give a low-pressure warning
that is higher or lower than the proper warning level you
would get with TPC Spec numbered tires.
5-68

Use the following diagram as a guide for storing the
compact spare tire in the trunk:
A. Compact Spare
Tire Cover
B. Plastic Wing Nut
C. Retainer
D. Jack Container
with Wheel Wrench
and JackE. Compact
Spare Tire
F. Foam Insert
G. Bolt
H. Wheel Wrench
I. Jack
J. Jack ContainerCompact Spare Tire
Although the compact spare tire was fully inated when
your vehicle was new, it can lose air after a time. Check
the ination pressure regularly. It should be
60 psi (420 kPa).
After installing the compact spare on your vehicle, you
should stop as soon as possible and make sure
your spare tire is correctly inated. The compact spare
is made to perform well at speeds up to 65 mph
(105 km/h) for distances up to 3,000 miles (5 000 km),
so you can nish your trip and have your full-size
tire repaired or replaced where you want. Of course, it
is best to replace your spare with a full-size tire as soon
as you can. Your spare will last longer and be in
good shape in case you need it again.
Notice:When the compact spare is installed, do
not take your vehicle through an automatic car wash
with guide rails. The compact spare can get
caught on the rails. That can damage the tire and
wheel, and maybe other parts of your vehicle.
Do not use your compact spare on other vehicles.
And do not mix your compact spare tire or wheel with
other wheels or tires. They will not t. Keep your
spare tire and its wheel together.
Notice:Tire chains will not t your compact spare.
Using them can damage your vehicle and can
damage the chains too. Do not use tire chains on
your compact spare.
5-84

The underhood fuse block is located in the front of the
engine compartment on the passenger’s side of the
vehicle. SeeEngine Compartment Overview on
page 5-12for more information on location, and removal
procedure for the front compartment underhood sights
shields.
To access the fuses, push in the tabs located on each
side of the fuse block cover. Then, lift the cover off.
Fuses Usage
BLOWER Blower Motor
R REAR Passenger’s Side Rear Fuse Block
I/P OUTLET Front Auxiliary Outlet
CCP Climate Control, Headlamp Leveling
PRE 02/CAM Oxygen Sensor, CAM Phasers
ENG W/H Engine W/H
R REAR Passenger’s Side Rear Fuse Block
WPR SW Wiper/Washer Switch
BODY W/H Body W/H
FOG LAMP Fog Lamps
OUTLET Rear Auxiliary Outlet
EVEN COILSEven Ignition Coils, Even Fuel
Injectors
L REAR Left Rear Fuse Block
WPR MOD Wiper Module
POST 02 Oxygen Sensor
Fuses Usage
COMP CLTCH Air Conditioner Compressor Clutch
STARTER Starter Solenoid
ABS Anti-Lock Brake Pump
L REAR Driver’s Side Rear Fuse Block
BODY W/H Body W/H
RAIN SSRRain Sensor, Headlamp Washer,
Tire Pressure Monitor
CCP Climate Control
SMT BM-OPT Smart Beam Relay (Option)
EXT LIGHTSLow Beam Relay, High Beam Relay,
Park Lamp Relay
VOLT CHECK Instrument Panel Module
ECM/TCMEngine Control Module,
Transmission Control Module,
Easy Key Module, Instrument
Panel Cluster
SPARE Spare
SPARE Spare
LT PARK Left Park Lamp, Left Taillamp
LIC DIMMINGLicense Plate, Instrument Panel
Dimming
IPM ALDLInstrument Panel Module Assembly
Line Data Link Connector
HUDHeads-Up Display, Column Lock
Module
5-97

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 5-15. Reset oil life system.
SeeEngine Oil Life System on page 5-18.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 5-20.See footnote (m).•
Check tires for ination pressures and wear. SeeTires on page 5-53. If tire
rotation is recommended for your vehicle, rotate tires. SeeTire Inspection and
Rotation on page 5-65and “Tire Wear Inspection” inAt Least Once a Month
on page 6-9.••
Inspect brake system.See footnote (a).••
Check engine coolant and windshield washer uid levels and 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).•
Check transmission uid level and add uid as needed.•
Replace passenger compartment air lter.See footnote (g).•
6-5

Owner Checks and Services
These owner checks and services should be performed
at the intervals specied to help ensure the safety,
dependability and emission control performance of your
vehicle. Your GM Goodwrench
®dealer can assist
you with these checks and services.
Be sure any necessary repairs are completed at once.
Whenever any uids or lubricants are added to your
vehicle, make sure they are the proper ones, as shown
inRecommended Fluids and Lubricants on page 6-12.
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 5-15for further
details.
Notice:It is important to check your oil regularly
and keep it at the proper level. Failure to keep your
engine oil at the proper level can cause damage
to your engine not covered by your warranty.
Engine Coolant Level Check
Check the engine coolant level and add
DEX-COOL®coolant mixture if necessary. SeeEngine
Coolant on page 5-22for further details.
Windshield Washer Fluid Level Check
Check the windshield washer uid level in the windshield
washer tank 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. SeeTires on page 5-53for further
details. Check to make sure the spare tire is stored
securely. SeeChanging a Flat Tire on page 5-74.
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 5-65.
6-9

Child Restraints (cont.)
Older Children.............................................1-26
Securing a Child Restraint Designed for
the LATCH System...................................1-40
Securing a Child Restraint in a Rear
Seat Position...........................................1-40
Securing a Child Restraint in the Right
Front Seat Position...................................1-43
Top Strap...................................................1-35
Top Strap Anchor Location............................1-37
Where to Put the Restraint...........................1-34
Cigarette Lighter.............................................3-49
Cleaning
Aluminum or Chrome-Plated Wheels..............5-91
Exterior Lamps/Lenses.................................5-89
Fabric/Carpet..............................................5-87
Finish Care.................................................5-89
Inside of Your Vehicle..................................5-85
Instrument Panel, Vinyl, and Other
Plastic Surfaces.......................................5-88
Leather......................................................5-87
Speaker Covers..........................................5-88
Tires..........................................................5-91
Underbody Maintenance...............................5-92
Washing Your Vehicle...................................5-89
Weatherstrips..............................................5-88
Windshield and Wiper Blades........................5-90
Wood Panels..............................................5-88Cleaning (cont.)
Climate Control System
Air Filter, Passenger Compartment.................3-58
Dual..........................................................3-50
Outlet Adjustment........................................3-56
Rear..........................................................3-57
Comfort Guides, Rear Safety Belt.....................1-23
Compact Spare Tire........................................5-84
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-45
Coolant
Engine Temperature Gage............................3-67
Engine Temperature Warning Light.................3-67
Heater, Engine............................................2-25
Surge Tank Pressure Cap.............................5-24
Cooling System..............................................5-27
Cruise Control................................................3-16
Cruise Control, Adaptive..................................3-20
Cruise Control, Forward Collision Alert (FAC)
System........................................................ 3-9
Cruise Control Light........................................3-72
Cupholder(s)..................................................2-45
Customer Assistance Information
Courtesy Transportation.................................. 7-7
Customer Assistance for Text
Telephone (TTY) Users............................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
3

Glove Box.....................................................2-45
GM Mobility Reimbursement Program.................. 7-5
H
Hazard Warning Flashers................................... 3-6
Head Restraints............................................... 1-6
Headlamp
Aiming.......................................................5-46
Headlamp Wiring............................................5-95
Headlamps....................................................3-33
Bulb Replacement.......................................5-48
Daytime Running Lamps...............................3-38
Flash-to-Pass..............................................3-13
Front Turn Signal Lamps..............................5-49
Halogen Bulbs............................................5-49
High Intensity Discharge (HID) Lighting...........5-48
High/Low Beam Changer................................ 3-9
On Reminder..............................................3-37
Sidemarker Lamps.......................................5-50
Washer......................................................3-16
Wiper Activated...........................................3-37
Head-Up Display (HUD)...................................3-43
Heated Seats............................................1-3, 1-4
Heated Steering Wheel..................................... 3-7
Heater...........................................................3-50
Highbeam On Light.........................................3-72Highway Hypnosis...........................................4-23
Hill and Mountain Roads..................................4-23
HomeLink
®Wireless Control System.................2-41
HomeLink®Wireless Control System Operation . . . 2-42
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-13
I
Ignition Positions.............................................2-22
Inadvertent Power Battery Saver.......................3-43
Infants and Young Children, Restraints...............1-28
Ination -- Tire Pressure..................................5-60
Instrument Panel
Overview..................................................... 3-4
Instrument Panel (I/P)
Brightness..................................................3-41
Cluster.......................................................3-61
J
Jump Starting.................................................5-38
6

K
Keyless Access System..................................... 2-3
Keyless Access System, Operation...................... 2-4
Keys............................................................... 2-2
L
Labelling, Tire Sidewall....................................5-54
Lamps
Battery Load Management............................3-42
Exterior Lighting Battery Saver......................3-41
Fog ...........................................................3-39
Inadvertent Power Battery Saver....................3-43
Reading.....................................................3-42
Twilight Sentinel
®........................................3-40
LATCH System
Child Restraints...........................................1-38
Securing a Child Restraint Designed for
the LATCH System...................................1-40
Light
Airbag Readiness........................................3-63
Anti-Lock Brake System Warning...................3-65
Brake System Warning.................................3-64
Charging System.........................................3-64
Cruise Control.............................................3-72
Engine Coolant Temperature Warning.............3-67Light (cont.)
Fog Lamp..................................................3-71
Highbeam On.............................................3-72
Lights On Reminder.....................................3-71
Low Tire Pressure Warning Light...................3-66
Malfunction Indicator....................................3-68
Oil Pressure...............................................3-70
Safety Belt Reminder...................................3-62
Security.....................................................3-71
TCS Warning Light......................................3-66
Traction Control System (TCS) Warning..........3-66
Lighting
Entry.........................................................3-42
Parade Dimming..........................................3-42
Limited-Slip Rear Axle....................................... 4-9
Loading Your Vehicle.......................................4-30
Lockout Protection..........................................2-13
Locks
Door..........................................................2-11
Lockout Protection.......................................2-13
Power Door................................................2-11
Programmable Automatic Door Locks.............2-12
Rear Door Security Locks.............................2-12
Loss of Control...............................................4-14
Lumbar
Power Controls............................................. 1-3
7