cooling BUICK CENTURY 2001 Owner's Guide

6-24
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
enough. Don't spill coolant on a hot engine.
Occasionally check the coolant level in the radiator.
For information on how to add coolant to the radiator,
see ªCooling Systemº in the Index.
Radiator Pressure Cap
NOTICE:
Your radiator cap is a 15 psi (105 kPa)
pressure
-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap
line up with the overflow tube on the radiator
filler neck.
See ªEngine Compartment Overviewº in the Index for
more information on location.
Power Steering Fluid
The power steering fluid reservoir is located on the
passenger's side of the vehicle at the back of the engine
compartment. See ªEngine Compartment Overviewº in
the Index for more information on location.

6-49
NOTICE:
The wrong wheel can also cause problems with
bearing life, brake cooling, speedometer or
odometer calibration, headlamp aim, bumper
height, vehicle ground clearance and tire or tire
chain clearance to the body and chassis.
See ªChanging a Flat Tireº in the Index for
more information.
Used Replacement Wheels
CAUTION:
Putting a used wheel on your vehicle is
dangerous. You can't know how it's been used or
how far it's been driven. It could fail suddenly
and cause an accident. If you have to replace a
wheel, use a new GM original equipment wheel.
Tire Chains
NOTICE:
Use tire chains only where legal and only when
you must. Use only SAE Class ªSº type chains
that are the proper size for your tires. Install
them on the front tires and tighten them as
tightly as possible with the ends securely
fastened. Drive slowly and follow the chain
manufacturer's instructions. If you can hear the
chains contacting your vehicle, stop and retighten
them. If the contact continues, slow down until
it stops. Driving too fast or spinning the wheels
with chains on will damage your vehicle.

6-62
Underhood Electrical Center -- Passenger's Side
Some fuses and relays are located in the underhood
electrical center on the passenger's side of the engine
compartment. See ªEngine Compartment Overviewº
in the Index for more information on location.Maxi fuse Description
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 Interior Lamps, Retained
Accessory Power, Keyless Entry,
Data Link, HVAC Head, Cluster,
Radio, AUX Power (Power Drop),
Cigarette Lighter
8 Ignition Switch, Wipers, Radio,
Steering Wheel Controls, Body
Control Module, AUX Power
(Power Drop), Power Windows,
Sunroof, HVAC Controls, DRL,
Rear Defog Relay

6-63
Mini relay Description
9 Cooling Fan 2
10 Cooling Fan 3
11 Starter Solenoid
12 Cooling Fan 1
13 Ignition Main
14 Air Pump (Optional)
Micro relay Description
15 A/C Clutch
16 Horn
17 Not Used
18 Not Used
19 Fuel Pump
Mini fuse Description
20 Air Pump (Optional)
21 Generator
22 ECM
23 A/C Compressor Clutch
24 Cooling Fan
25 Electronic Ignition
26 TransaxleMini relay Description
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

6-64
Replacement Bulbs
Exterior Lamps Bulb Number
Back
-up 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
Interior Lamps Bulb Number
Dome Lamp 9425542
For service information on these bulbs, contact your
dealer service department.
Capacities and Specifications
Automatic Transaxle
Pan Removal and Replacement 7.4 quarts (7.0 L). . .
After Complete Overhaul 10 quarts (9.5 L). . . . . . .
When draining/replacing converter, more fluid will
be needed.
Cooling System
Including Reservoir11.3 quarts (10.7 L) . . . . . . . .
Refrigerant,
Air ConditioningSee the refrigerant . . . . . . . . . . .
label under the hood.
Engine Crankcase
Oil and Filter Change 4.5 quarts (4.3 L). . . . . . . . .
Wheel Nut Torque100 lb
-ft (140 N´m) . . . . . . . . . .
Fuel Tank17 U.S. gallons (64 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.

Scheduled Maintenance
7-14
100,000 Miles (166 000 km)

Inspect spark plug wires.
An Emission Control Service.

Replace spark plugs.
An Emission Control Service.

Change automatic transaxle fluid and filter if the vehicle is mainly driven
under one or more of these conditions:
± In heavy city traffic where the outside temperature regularly reaches
90
F (32
C) or higher.
± In hilly or mountainous terrain.
± When doing frequent trailer towing.
± Uses such as found in taxi, police or delivery service.
If you haven't used your vehicle under severe service conditions listed
previously and, therefore, haven't changed your automatic transaxle fluid,
change both the fluid and filter.
150,000 Miles (240 000 km)
Drain, flush and refill cooling system (or every 60 months since last service,
whichever occurs first). See ªEngine Coolantº in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test
the cooling system and pressure cap.
An Emission Control Service.
ACTUAL
SERVICED BY:MILEAGE
DATE
ACTUAL
SERVICED BY:MILEAGE
DATE

7-20 Engine Cooling System Inspection
Inspect the hoses and have them replaced if they
are cracked, swollen or deteriorated. Inspect all pipes,
fittings and clamps; replace as needed. Clean the outside
of the radiator and air conditioning condenser. To help
ensure proper operation, a pressure test of the cooling
system and pressure cap is recommended at least
once a year.
Throttle System Inspection
Inspect the throttle system for interference or binding,
and for damaged or missing parts. Replace parts as
needed. Replace any components that have high effort
or excessive wear. Do not lubricate accelerator and
cruise control cables.
Brake System Inspection
Inspect the complete system. Inspect brake lines and
hoses for proper hook
-up, binding, leaks, cracks,
chafing, etc. Inspect disc brake pads for wear and rotors
for surface condition. Also inspect drum brake linings
for wear and cracks. Inspect other brake parts, including
drums, wheel cylinders, calipers, parking brake, etc.
Check parking brake adjustment. You may need to have
your brakes inspected more often if your driving habits
or conditions result in frequent braking.