tire pressure CADILLAC DEVILLE 2003 8.G User Guide

Tires
Your new vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where to obtain service,
see your Cadillac Warranty booklet for details.
{CAUTION:
·Poorly maintained and improperly used
tires are dangerous.
·Overloading your tires can cause
overheating as a result of too much
friction. You could have an air-out and a
serious accident. See ªLoading Your
Vehicleº in the Index.
CAUTION: (Continued)
CAUTION: (Continued)
·
Underin¯ated tires pose the same danger
as overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended
pressure. Tire pressure should be checked
when your tires are cold.
·Overin¯ated tires are more likely to be cut,
punctured or broken by a sudden
impactÐ such as when you hit a pothole.
Keep tires at the recommended pressure.
·Worn, old tires can cause accidents.
If your tread is badly worn, or if your tires
have been damaged, replace them. See
ªIn¯ation ± Tire Pressureº in this section
for in¯ation pressure adjustment for higher
speed driving.
5-60

In¯ation Ð Tire Pressure
The Tire-Loading Information label, which is located on
the rear edge of the driver's side rear door, shows
the correct in¯ation pressures for your tires when they're
cold. ªColdº means your vehicle has been sitting for at
least three hours or driven no more than 1 mile (1.6 km).
If you'll be driving at high speeds (e.g., speeds of
100 mph (160 km/h) or higher), where it is legal, set the
cold in¯ation pressure to the maximum in¯ation
pressure shown on the tire sidewall, or to 38 psi
(265 kPa), whichever is lower. See the example below.
When you end this high-speed driving, return to the
cold in¯ation pressure shown on the Tire-Loading
Information label.
Example:
You'll ®nd maximum load and in¯ation pressure molded
on the tire's sidewall, in small letters, near the rim
¯ange. It will read something like this: Maximum load
690 kg (1521 lbs) 300 kPa (44 psi) Max. Press.
For this example, you would set the in¯ation pressure
for high-speed driving at 38 psi (265 kPa).
Notice:Don't let anyone tell you that underin¯ation
or overin¯ation is all right. It's not. If your tires
don't have enough air (underin¯ation), you can get
the following:
·Too much ¯exing
·Too much heat
·Tire overloading
·Bad wear
·Bad handling
·Bad fuel economy
If your tires have too much air (overin¯ation), you
can get the following:
·Unusual wear
·Bad handling
·Rough ride
·Needless damage from road hazards
When to Check
Check your tires once a month or more.
Don't forget your compact spare tire. It should be at
60 psi (420 kPa).
5-61

How to Check
Use a good quality pocket-type gage to check tire
pressure. You can't tell if your tires are properly in¯ated
simply by looking at them. Radial tires may look
properly in¯ated even when they're underin¯ated.
Be sure to put the valve caps back on the valve stems.
They help prevent leaks by keeping out dirt and moisture.
Tire Pressure Monitor System
The Tire Pressure Monitor (TPM) system uses radio
and sensor technology to check tire pressure levels.
Sensors, mounted on each road wheel, transmit
tire pressure readings to a receiver located in the trunk.
Tire pressure status and tire pressure warnings are
shown on the Driver Information Center (DIC) display.
See
Driver Information Center (DIC) on page 3-57,
for details regarding DIC controls and displays.
The system operates on a radio frequency subject to
Federal Communications Commission (FCC) Rules and
with Industry and Science Canada.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2)
this device must accept any interference received,
including interference that may cause undesired
operation.This device complies with RSS-210 of Industry and
Science Canada. Operation is subject to the following
two conditions: (1) this device may not cause
interference, and (2) this device must accept any
interference received, including interference that may
cause undesired operation of the device.
Changes or modi®cations to this system by anyone
other than an authorized service facility could void
authorization to use this equipment.
If the TPM system detects low tire pressure, below
25 psi (172 kPa), or high tire pressure, above 38 psi
(262 kPa), a message, CHECK TIRE PRESSURE, will
appear on the Driver Information Center (DIC)
display. By pressing the INFO button, the DIC screen
will show which tire(s) has the low or high pressure
condition. See
In¯ation Ð Tire Pressure on page 5-61for information regarding correct tire in¯ation. If a
tire is low, you should stop as soon as possible and
check all your tires for damage. If a tire is ¯at, see
If a
Tire Goes Flat on page 5-71.
Notice:Do not use a tire sealant if your vehicle is
equipped with Tire Pressure Monitors. The liquid
sealant can damage the tire pressure monitor
sensors.
5-62

Once a low or high tire pressure condition is detected,
the TPM system will display the CHECK TIRE
MESSAGE each time the engine is started, until the
tire(s) are set to the correct in¯ation pressure.
The Tire-Loading Information Label, which is located on
the rear edge of the driver's door, shows the correct
in¯ation pressure for the tires on your vehicle.
The TPM system also allows the driver to check the air
pressure status of each road tire using the Driver
Information Center (DIC). Each tire's air pressure will be
listed individually, in the following order: LF (left front
or driver's side front tire), RF (right front or passenger's
side front tire), RR (right rear or passenger's side
rear tire) and LR (left rear or driver's side rear tire). See
In¯ation -- Tire Pressure on page 5-61for information
regarding correct tire in¯ation. Also, seeDriver
Information Center (DIC) on page 3-57for information on
the DIC controls and displays.If the DIC display doesn't show tire pressures or the
SERVICE TPM SYSTEM message appears, see
your dealer for service. The TPM system may not work
properly while the compact spare tire is installed.
Anytime you replace one or more tires or rotate your
tires, the TPM system will need to be reset. A special
tool is needed to reset the sensor identi®cation
codes. See your dealer for service.
Your vehicle was delivered from the factory with
aluminum valve stem caps. If you ever have to replace
the valve stem caps on your vehicle, you should
replace them with aluminum or plastic caps.
The TPM system can alert you about a low or high tire
pressure condition, but it doesn't replace normal tire
maintenance. See
Tires on page 5-60.
5-63

Tire Inspection and Rotation
Tires should be rotated every 7,500 miles (12 500 km).
Any time you notice unusual wear, rotate your tires
as soon as possible and check wheel alignment. Also
check for damaged tires or wheels. See
When It Is Time
for New Tires on page 5-65andWheel Replacement
on page 5-69for more information.
The purpose of regular rotation is to achieve more
uniform wear for all tires on the vehicle. The ®rst rotation
is the most important. See
Part A: Scheduled
Maintenance Services on page 6-4for scheduled
rotation intervals.
When rotating your tires, always use the correct rotation
pattern shown here.Don't include the compact spare tire in your tire rotation.
After the tires have been rotated, adjust the front and
rear in¯ation pressures as shown on the Tire-Loading
Information label.
Vehicles equipped with the Tire Pressure Monitor (TPM)
system will need to have the sensors reset after a tire
rotation is performed. A special tool is needed to
reset the sensor identi®cation codes. See your dealer
for service.
Make certain that all wheel nuts are properly tightened.
See ªWheel Nut Torqueº underCapacities and
Speci®cations on page 5-101.
5-64

Compact Spare Tire
Although the compact spare tire was fully in¯ated when
your vehicle was new, it can lose air after a time.
Check the in¯ation 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 in¯ated. 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's
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, don't
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.
Don't use your compact spare on other vehicles. And
don't mix your compact spare tire or wheel with
other wheels or tires. They won't ®t. Keep your spare
tire and its wheel together.
Notice:Tire chains won't ®t your compact spare.
Using them can damage your vehicle and can
damage the chains too. Don't use tire chains on
your compact spare.
5-83

82,500 Miles (137 500 km)
qRotate tires. SeeTire Inspection and Rotation on
page 5-64for proper rotation pattern and additional
information.(See footnote +.)
90,000 Miles (150 000 km)
qReplace passenger compartment air ®lter. If you
drive regularly under dusty conditions, the ®lter
may require replacement more often.
qInspect throttle body bore and valve plates for
deposits, open the throttle valve and inspect all
surfaces. Clean as required.
An Emission Control
Service. (See footnote ².)
qReplace engine air cleaner ®lter. SeeEngine Air
Cleaner/Filter on page 5-19for more information.An Emission Control Service.
qRotate tires. SeeTire Inspection and Rotation on
page 5-64for proper rotation pattern and additional
information.(See footnote +.)
97,500 Miles (162 500 km)
qRotate tires. SeeTire Inspection and Rotation on
page 5-64for proper rotation pattern and additional
information.(See footnote +.)
100,000 Miles (166 000 km)
qReplace spark plugs.An Emission Control Service.
qChange automatic transaxle ¯uid and ®lter if the
vehicle is mainly driven under one or more of
these conditions:
þ In heavy city traffic where the outside
temperature regularly reaches 90ÉF (32ÉC) or
higher.
þ In hilly or mountainous terrain.
þ When doing frequent trailer towing.
þ Uses such as limousine service.
þ Uses such as high performance operation.
If you do not use your vehicle under any of these
conditions, the ¯uid and ®lter do not require change until
the message CHANGE TRANS FLUID appears on
the Driver Information Center.
150,000 Miles (240 000 km)
qDrain, ¯ush and re®ll cooling system (or every
60 months since last service, whichever occurs ®rst).
See
Engine Coolant on page 5-24for what to use.
Inspect hoses. Clean radiator, condenser, pressure
cap and neck. Pressure test the cooling system
and pressure cap.
An Emission Control Service.
qInspect engine accessory drive belt.An Emission
Control Service.
6-8

Part B: Owner Checks and Services
Listed in this part are owner checks and services
which should be performed at the intervals speci®ed to
help ensure the safety, dependability and emission
control performance of your vehicle.
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
in Part D.
At Each Fuel Fill
It is important for you or a service station attendant 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 5-13for further
details.
Engine Coolant Level Check
Check the engine coolant level and add DEX-COOLž
coolant mixture if necessary. SeeEngine Coolant
on page 5-24for 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.
See
Windshield Washer Fluid on page 5-37for further
details.
At Least Once a Month
Tire In¯ation Check
Make sure tires are in¯ated to the correct pressures.
Don't forget to check your spare tire. SeeTires on
page 5-60for further details.
Cassette Tape Player Service
Clean cassette tape player. Cleaning should be done
every 50 hours of tape play. SeeAudio System(s)
on page 3-80for further details.
6-9

Compact Disc Changer Errors.........................3-103
Compact Disc Messages..........................3-88, 3-99
Compact Spare Tire........................................5-83
Compass Calibration.......................................2-41
Compass Operation.........................................2-41
Compass Variance..........................................2-41
Console Shift Lever.........................................2-36
Continuous Variable Road Sensing Suspension
(CVRSS)....................................................4-10
Control of a Vehicle.......................................... 4-5
Convenience Net............................................2-53
Coolant.........................................................3-50
Engine Temperature Gage............................3-50
Engine Temperature Warning Light.................3-49
Heater, Engine............................................2-25
Surge Tank Pressure Cap.............................5-27
Cooling System..............................................5-30
Cornering Lamps............................................3-17
Courtesy Lamps.............................................3-20
Cruise Control Light........................................3-55
Cruise Control................................................3-12
Current and Past Model Order Forms................7-12
Customer Assistance Information........................ 7-8
Courtesy Transportation.................................. 7-8
Customer Assistance for Text Telephone (TTY)
Users....................................................... 7-4
Customer Assistance Offices........................... 7-4
Customer Satisfaction Procedure..................... 7-2
GM Mobility Program for Persons with
Disabilities................................................ 7-6Customer Assistance Information (cont.)
Reporting Safety Defects to General Motors....7-11
Reporting Safety Defects to the Canadian
Government............................................7-10
Reporting Safety Defects to the United States
Government............................................7-10
Roadside Service.......................................... 7-6
Service Publications Ordering Information........7-11
D
Daytime Running Lamps..................................3-16
Defensive Driving............................................. 4-2
Defogging and Defrosting.................................3-32
Digital Cluster.................................................3-41
Dinghy Towing................................................4-31
Display Mode.................................................3-43
Diversity Antenna System...............................3-108
Doing Your Own Service Work........................... 5-3
Dolly Towing..................................................4-32
Door............................................................... 2-9
Central Door Unlocking System....................... 2-9
Locks.......................................................... 2-8
Power Door Locks......................................... 2-9
Programmable Automatic Door Locks............... 2-9
Rear Door Security Locks.............................2-10
Doors Lock in Gear.........................................3-73
Doors Unlock in PARK (P)................................3-75
Doors Unlock Key Off......................................3-76
4

Horn Sounds at Lock......................................3-72
Horn............................................................... 3-7
How the System Works...................................3-26
How to Add Coolant to the Coolant Surge Tank......5-31
How to Add Fluid............................................5-23
How to Check Power Steering Fluid..................5-36
How to Check........................................5-21, 5-62
How to Reset the Transaxle Fluid Indicator.........5-23
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-14
Hydroplaning..................................................4-19
I
If No Steam Is Coming From Your Engine..........5-29
If Steam Is Coming From Your Engine...............5-28
If the Light Is Flashing.....................................3-51
If the Light Is On Steady.................................3-52
If You Are Stuck in Sand, Mud, Ice or Snow.......4-30
If You Do Decide To Pull a Trailer.....................4-35
If You're Caught in a Blizzard...........................4-27
Ignition Positions.............................................2-23
Ignition Transaxle Lock Check..........................6-12
Inadvertent Power Battery Saver.......................3-22
Infants and Young Children, Restraints...............1-32
In¯ation Ð Tire Pressure.................................5-61Inspection......................................................6-14
Brake System.............................................6-14
Engine Cooling System................................6-14
Exhaust System..........................................6-13
Fuel System...............................................6-13
Part C - Periodic Maintenance.......................6-13
Steering, Suspension and Front Drive Axle
Boot and Seal.........................................6-13
Throttle System...........................................6-14
Instrument Panel Brightness.............................3-19
Instrument Panel.............................................3-40
Cluster.......................................................3-40
Overview..................................................... 3-4
Storage Area..............................................2-51
Interior Lamps................................................3-19
J
Jump Starting.................................................5-43
K
Key in Recall Memory.....................................3-68
Key Lock Cylinders Service..............................6-10
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
8