BUICK CENTURY 2002 Owner's Manual

6-61 Fuses and Circuit Breakers
The wiring circuits in your vehicle are protected from
short circuits by a combination of fuses, circuit breakers
and in the wiring of the fuse block itself. This greatly
reduces the chance of fires caused by electrical problems.
Look at the silver
-colored band inside the fuse. If the
band is broken or melted, replace the fuse. Be sure you
replace a bad fuse with a new one of the identical size
and rating.
Instrument Panel Fuse Block
Some fuses are located in a
fuse block on the instrument
panel on the passenger's
side of the vehicle. Pull off
the cover labeled FUSES
to expose the fuses.
Circuit Breaker Usage
TIRE RESET Tire Inflation Monitor
Reset Button
PWR WINDOWS,
PWR SUNROOFPower Windows,
Power Sunroof
REAR DEFOG Rear Window Defogger
POWER SEATS Power Seats
Blank Not Used

6-62
Fuse Usage
PARK LOCK Ignition Key Solenoid
Blank Not Used
Blank Not Used
PCM, BCM,
U/H RELAYIgnition Signal: Hot in Run and
Start, Powertrain Control
Module, Body Control Module,
Underhood Relay
RADIO
PREM. SOUNDRemote Radio Premium Sound
POWER MIRRORS Power Mirrors
Blank Not Used
PANEL DIMMING Panel Dimming
Blank Not Used
IGN 0, CLUSTER,
PCM, BCMIgnition Signal: Hot in Run,
Unlock and Start, Cluster,
Powertrain Control Module,
Body Control ModuleFuse Usage
Blank Not Used
Blank Not Used
Blank Not Used
INADV
POWER BUSRetained Accessory Power
DOOR LOCKS Door Locks
TRAP ALERT Trap Alert

TAIL LAMPS,
LIC LAMPSTaillamps, License Lamps
RADIO Radio
HEATED MIRROR Heated Mirrors
CRUISE Cruise Control
Blank Not Used
CLUSTER Instrument Panel Cluster
CIGAR LTR Cigarette Lighter,
Auxiliary Power Connection
(Power Drop)

6-63
Fuse Usage
STOP LAMPS Stoplamps
ONSTAR OnStar


FRT PARK LPS Parking Lamps
POWER DROP Auxiliary Power Connection
(Power Drop): Hot in ACC
and Run
CRANK SIGNAL,
BCM, CLUSTERCrank Signal, Body Control
Module, Cluster, Powertrain
Control Module
HVAC Ignition Signal, Heating
Ventilation Air Conditioning
Control Head
BTSI PARK LOCK Shifter Lock Solenoid
AIR BAG Air Bag
BCM PWR Body Control Module
HAZARD Hazard Flashers
LH HEATED SEAT Driver's Heated SeatFuse Usage
Blank Not Used
BCM ACC Ignition Signal: Hot in ACC
and Run, Body Control Module
Blank Not Used
LOW BLOWER Low Blower
ABS Anti
-Lock Brakes
TURN SIGNALS,
CORN LPSTurn Signals, Cornering Lamps
RADIO, HVAC,
RFA, CLUSTERRadio, HVAC Head, Remote
Keyless Entry, Cluster
HIGH BLOWER High Blower
RH HEATED SEAT Passenger's Heated Seat
STRG WHL CONT Audio Steering Wheel Controls
WIPER Wipers

6-64
Underhood Fuse Block
Some fuses and relays are located in the underhood fuse
block in the engine compartment on the passenger's side
of the vehicle. See ªEngine Compartment Overviewº in
the Index for more information on location.Maxi Fuse Usage
1 ABS
2 Starter Solenoid
3 Power Seats, Rear Defog, Heated Seats
4 High Blower, Hazard Flasher,
Stoplamps, Power Mirror, Door Locks
5 Ignition Switch, BTSI, Stoplamps,
ABS, Turn Signals, Cluster, Air Bag,
DRL Module
6 Cooling Fan
7 Retained Accessory Power, Keyless
Entry, Data Link, Heating Ventilation
Air Conditioning Head, Cluster, Radio,
Auxiliary Power (Power Drop),
Cigarette Lighter
8 Ignition Switch, Wipers, Radio,
Steering Wheel Controls, Body
Control Module, Auxiliary Power
(Power Drop), Power Windows,
Sunroof, Heating Ventilation Air
Conditioning Controls, Daytime
Running Lamps, Rear Defog Relay

6-65
Mini Relay Usage
9 Cooling Fan 2
10 Cooling Fan 3
11 Starter Solenoid
12 Cooling Fan 1
13 Ignition Main
14 Not Used
Micro Relay Usage
15 A/C Clutch
16 Horn
17 Not Used
18 Not Used
19 Fuel Pump
Mini Fuse Usage
20 Not Used
21 Generator
22 ECM
23 A/C Compressor Clutch
24 Cooling Fan
25 Electronic Ignition
26 TransaxleMini Relay Usage
27 Horn
28 Fuel Injector
29 Oxygen Sensor
30 Engine Emissions
31 Not Used
32 Headlamp (Right)
33 Rear Compartment Release
34 Parking Lamps
35 Fuel Pump
36 Headlamp (Left)
37 Spare
38 Spare
39 Spare
40 Spare
41 Spare
42 Spare
43 Fuse Puller
SYMBOL A/C Compressor Clutch Diode

6-66
Replacement Bulbs
Exterior Lamps Bulb Number
Back
-up (Applique) 1156. . . . . . . . . . . . . . . . . . . . . .
Center High
-Mounted Stop 3155. . . . . . . . . . . . . . . .
Front Parking/Turn Signal 4157NAK. . . . . . . . . . . . .
Headlamp, High Beam 9005. . . . . . . . . . . . . . . . . . . .
Headlamp, Low Beam 9006. . . . . . . . . . . . . . . . . . . .
Stop/Tail/Turn Signal 3057. . . . . . . . . . . . . . . . . . . . .
Tail (Applique) 194. . . . . . . . . . . . . . . . . . . . . . . . . . .
For any bulb not listed here, contact your dealer.
Capacities and Specifications
Automatic Transaxle
Pan Removal and Replacement 7.4 quarts (7.0 L). . .
After Complete Overhaul 10.0 quarts (9.5 L). . . . . . .
When draining/replacing converter, more fluid
will be needed.
Cooling System
Including Reservoir 11.3 quarts (10.7 L). . . . . . . . . .
Oil and Filter Change 4.5 quarts (4.3 L). . . . . . . . . . .
Wheel Nut Torque 100 lb
-ft (140 N´m) . . . . . . . . . . .
Fuel Tank 17.0 U.S. gallons (64.0 L). . . . . . . . . . . . .
All capacities are approximate. When adding, be sure to
fill to the approximate level, as recommended in this
manual. See ªRecommended Fluids and Lubricantsº in
the Index.
Engine Specifications
Engine VIN Code J. . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Type 3100 V6. . . . . . . . . . . . . . . . . . . . . . .
Displacement 191 CID. . . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-2-3-4-5-6 . . . . . . . . . . . . . . . . . . . .

6-67
Air Conditioning
Refrigerant Capacity
If you do your own service work, you'll need the proper
service manual. See ªDoing Your Own Service Workº in
the Index for additional information. It is recommended
that service work on your air conditioning system be
performed by a qualified technician.
Air Conditioning
Refrigerant R
-134a 2.3 lbs. (1.0 kg). . . . . . . . . . . . .
Use Refrigerant Oil, R
-134a Systems
Normal Maintenance
Replacement Parts
Engine Air Cleaner/FilterType A1208C* . . . . . . . . .
Passenger Compartment Air Filter 10406026. . . . . .
Engine Oil Filter Type PF47*. . . . . . . . . . . . . . . . . . .
Spark PlugsType 41
-940* . . . . . . . . . . . . . . . . . . . . .
Gap: 0.060 inches (1.52 mm)
Wiper Blade
Type Hook. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Length 22.0 inches (56.0 cm). . . . . . . . . . . . . . . . . . .
*AC Delco

part number.

7-
7-1
Section 7 Maintenance Schedule
This section covers the maintenance required for your vehicle. Your vehicle needs these services to retain its safety,
dependability and emission control performance.
7
-2 Introduction
7
-4 Part A: Scheduled Maintenance Services
7
-15 Part B: Owner Checks and Services7
-19 Part C: Periodic Maintenance Inspections
7
-21 Part D: Recommended Fluids and Lubricants
7
-23 Part E: Maintenance Record

7-2
Have you purchased the GM Protection Plan? The Plan
supplements your new vehicle warranties. See your
Warranty and Owner Assistance booklet or your dealer
for details.
Introduction
Your Vehicle and the Environment
Proper vehicle maintenance not only helps to keep your
vehicle in good working condition, but also helps the
environment. All recommended maintenance procedures
are important. Improper vehicle maintenance can even
affect the quality of the air we breathe. Improper fluid
levels or the wrong tire inflation can increase the level
of emissions from your vehicle. To help protect our
environment, and to keep your vehicle in good
condition, please maintain your vehicle properly.
Maintenance Requirements
Maintenance intervals, checks, inspections and
recommended fluids and lubricants as prescribed in
this manual are necessary to keep your vehicle in good
working condition. Any damage caused by failure to
follow recommended maintenance may not be covered
by warranty.

7-3 How This Section is Organized
This maintenance schedule is divided into five parts:
ªPart A: Scheduled Maintenance Servicesº explains
what to have done and how often. Some of these
services can be complex, so unless you are technically
qualified and have the necessary equipment, you should
let your dealer's service department or another qualified
service center do these jobs.
CAUTION:
Performing maintenance work on a vehicle can
be dangerous. In trying to do some jobs, you can
be seriously injured. Do your own maintenance
work only if you have the required know
-how
and the proper tools and equipment for the job.
If you have any doubt, have a qualified
technician do the work.
If you want to get the service information,
see ªService and Owner Publicationsº in the Index.ªPart B: Owner Checks and Servicesº tells you
what should be checked and when. It also explains
what you can easily do to help keep your vehicle
in good condition.
ªPart C: Periodic Maintenance Inspectionsº explains
important inspections that your dealer's service
department or another qualified service center
should perform.
ªPart D: Recommended Fluids and Lubricantsº lists
some recommended products necessary to help keep
your vehicle properly maintained. These products, or
their equivalents, should be used whether you do the
work yourself or have it done.
ªPart E: Maintenance Recordº is a place for you
to record and keep track of the maintenance performed
on your vehicle. Keep your maintenance receipts.
They may be needed to qualify your vehicle for
warranty repairs.