2005 BUICK CENTURY tire pressure

The system normally takes 15 to 20 minutes of driving
time in each of three speed ranges to determine
tire pressures. The speed ranges are 15 to 40 mph
(25 to 65 km/h), 40 to 65 mph (65 to 105 km/h)
and above 65 mph (105 km/h). When the storage of the
tire ination information is complete, the LOW TIRE
light will come on the instrument panel after two to
eight minutes if one tire is inated 12 psi (83 kPa) less
than the other three tires. Detection thresholds may
be higher and detection times may be longer on rough
roads, curves and at high speeds. The system is
not capable of ination differences at speeds greater
than 70 mph (110 km/h).
The tire ination monitor system will not alert you if the
pressure in more than one tire is low, if the system
is not properly calibrated, or if the vehicle is moving
faster than 70 mph (110 km/h).
The LOW TIRE light will stay on while the ignition is on,
until the system is reset.Do not reset the tire ination monitor system without
rst correcting the cause of the problem and checking
and adjusting the pressure in all four tires. If the
system is reset when the tire pressures are incorrect,
it will not function properly and may not alert you when a
tire is low.
Any time a tire’s pressure is adjusted, the tires are
rotated, or one or more tires is repaired or replaced,
the tire ination monitor system will need to be
reset. The system also needs to be reset when new
tires are purchased and if the vehicle’s battery has
been disconnected.
To reset the system, do the following:
1. Turn the ignition to RUN.
2. Remove the passenger’s side instrument panel
cover to access the fuse block.
3. Press and hold the RESET button in the fuse block
for about ve seconds.
The LOW TIRE light will come on and ash three
times. Then it will go off. If the light does not go off,
see your dealer for service.
5-62

Tire Inspection and Rotation
Tires should be rotated every 5,000 to 8,000 miles
(8 000 to 13 000 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. SeeWhen It Is Time
for New Tires on page 5-64andWheel Replacement
on page 5-67for 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. SeeScheduled Maintenance
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 ination pressures as shown on the Tire and
Loading Information label.
Reset the Tire Ination Monitor System. SeeTire
Pressure Monitor System on page 5-61.
Make certain that all wheel nuts are properly tightened.
See “Wheel Nut Torque” underCapacities and
Specications on page 5-96.
{CAUTION:
Rust or dirt on a wheel, or on the parts to
which it is fastened, can make wheel nuts
become loose after a time. The wheel could
come off and cause an accident. When you
change a wheel, remove any rust or dirt from
places where the wheel attaches to the vehicle.
In an emergency, you can use a cloth or a
paper towel to do this; but be sure to use a
scraper or wire brush later, if you need to,
to get all the rust or dirt off. SeeChanging a
Flat Tire on page 5-70.
5-63

The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon
as you can. SeeCompact Spare Tire on page 5-81.
See the storage instructions label to return the compact
spare to the trunk properly.
Be sure to calibrate low tire ination system after you
replace the compact spare tire with a full-sized tire.
SeeInation - Tire Pressure on page 5-60.A. Retainer
B. Cover
C. Compact Spare Tire
D. Nut
E. Jack
F. Wheel Wrench
G. Extension and Protector
H. Bolt Screw
I. Foam Holder
5-80

Compact Spare Tire
Although the compact spare tire was fully inated when
the 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 the vehicle, check
to make sure it 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).
However, It is best to replace the compact spare with
a full-size tire as soon as possible. The spare will
last longer and be in good shape in case it is needed
again. The tire ination monitor system must be
reset after installing or removing the compact spare.
SeeTire Pressure Monitor System on page 5-61.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 the compact spare on other vehicles.
Do not mix the compact spare tire or wheel with other
wheels or tires. They will not t. Keep the 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.
5-81

Scheduled Maintenance
Service MaintenanceIMaintenanceII
Change engine oil and lter. SeeEngine Oil on page 5-13. Reset oil life system.
SeeEngine Oil Life System on page 5-16.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 5-18.An Emission Control Service. See footnote †.••
Rotate tires and check ination pressures and wear. SeeTires on page 5-53.••
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 transaxle uid level and add uid as needed.•
Replace passenger compartment air lter.See footnote (g).•
Inspect throttle system.See footnote (j).•
6-5

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 tires and make sure tires are
inated to the correct pressures. Do not forget to check
your spare tire. SeeTires on page 5-53for further
details. Check to make sure the spare tire is stored
securely. Push, pull and then try to rotate or turn
the spare tire. If it moves, tighten it. SeeChanging a
Flat Tire on page 5-70.
At Least Once a Year
Starter Switch Check
{CAUTION:
When you are doing this inspection, the
vehicle could move suddenly. If the vehicle
moves, you or others could be injured.
1. Before you start, be sure you have enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular
brake. SeeParking Brake on page 2-24if necessary.
Do not use the accelerator pedal, and be ready to
turn off the engine immediately if it starts.
3. Try to start the engine in each gear. The starter
should work only in PARK (P) or NEUTRAL (N).
If the starter works in any other position, contact
your GM Goodwrench dealer for service.
6-10

Headlamp Wiring............................................5-91
Headlamps....................................................5-47
Bulb Replacement.......................................5-47
Daytime Running Lamps/Automatic
Headlamp System....................................3-14
Delayed.....................................................3-13
Flash-to-Pass............................................... 3-8
Front Turn Signal and Parking Lamps.............5-48
Halogen Bulbs............................................5-47
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-13
Heater...........................................................3-18
Heater...........................................................3-21
Highway Hypnosis...........................................4-23
Hill and Mountain Roads..................................4-24
Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn............................................................... 3-6
How to Use This Manual...................................... ii
How to Wear Safety Belts Properly...................1-12
I
If You Are Stuck in Sand, Mud, Ice or Snow.......4-30
Ignition Positions.............................................2-18
Infants and Young Children, Restraints...............1-30
Ination -- Tire Pressure..................................5-60Instrument Panel
Brightness..................................................3-15
Cluster.......................................................3-29
Overview..................................................... 3-4
Interior Lamps................................................3-15
J
Jump Starting.................................................5-40
K
Keyless Entry System....................................... 2-4
Keys............................................................... 2-2
L
Labelling, Tire Sidewall....................................5-54
Lamps
Battery Run-Down Protection.........................3-17
Cornering...................................................3-15
Courtesy....................................................3-15
Dome........................................................3-16
Exterior......................................................3-13
Interior.......................................................3-15
Reading.....................................................3-17
6

LATCH System
Child Restraints...........................................1-40
Securing a Child Restraint Designed for
the LATCH System...................................1-42
Leaving Your Vehicle.......................................2-12
Light
Airbag Readiness........................................3-31
Anti-Lock Brake System Warning...................3-33
Brake System Warning.................................3-32
Change Engine Oil......................................3-40
Charging System.........................................3-32
Cruise Control.............................................3-41
Door/Trunk Ajar Warning...............................3-42
Engine Coolant Temperature Warning.............3-35
Enhanced Traction System (ETS)
Warning Light..........................................3-34
Low Fuel Warning.......................................3-43
Low Traction...............................................3-34
Low Washer Fluid Warning...........................3-41
Malfunction Indicator....................................3-36
Oil Pressure...............................................3-40
Safety Belt Reminder...................................3-30
Security.....................................................3-41
Service Vehicle Soon...................................3-42
Tire Pressure..............................................3-36
Lighting
Delayed Entry.............................................3-16
Delayed Exit...............................................3-17
Entry.........................................................3-16Lockout Protection..........................................2-12
Locks
Door..........................................................2-10
Leaving Your Vehicle....................................2-12
Lockout Protection.......................................2-12
Power Door................................................2-11
Programmable Automatic Door Locks.............2-11
Loss of Control...............................................4-15
Low Fuel Warning Light...................................3-43
Low Traction Light..........................................3-34
Low Washer Fluid Warning Light.......................3-41
M
Maintenance Schedule
Additional Required Services........................... 6-6
At Each Fuel Fill........................................... 6-9
At Least Once a Month................................6-10
At Least Once a Year..................................6-10
Introduction.................................................. 6-2
Maintenance Footnotes.................................. 6-8
Maintenance Record....................................6-16
Maintenance Requirements............................. 6-2
Normal Maintenance Replacement Parts.........6-14
Owner Checks and Services........................... 6-9
Recommended Fluids and Lubricants.............6-13
Scheduled Maintenance................................. 6-4
Using Your................................................... 6-2
Your Vehicle and the Environment................... 6-2
7