1999 BUICK CENTURY engine

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6-26
Windshield Washer Fluid
What to Use
When you need windshield washer fluid, be sure to read
the manufacturer's instructions before use. If you will be
operating your vehicle in an area where the temperature
may fall below freezing, use a fluid that has sufficient
protection against freezing.
Adding Washer Fluid
Open the cap labeled WASHER FLUID ONLY. Add
washer fluid until the tank is full.
NOTICE:

When using concentrated washer fluid,
follow the manufacturer's instructions for
adding water.

Don't mix water with ready
-to-use washer
fluid. Water can cause the solution to freeze
and damage your washer fluid tank and
other parts of the washer system. Also,
water doesn't clean as well as washer fluid.

Fill your washer fluid tank only
three
-quarters full when it's very cold. This
allows for expansion if freezing occurs,
which could damage the tank if it is
completely full.

Don't use engine coolant (antifreeze) in
your windshield washer. It can damage
your washer system and paint.

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6-27
Brakes
Brake Fluid
Your brake master cylinder reservoir is on the driver's
side of the engine compartment. It is filled with DOT
-3
brake fluid.
There are only two reasons why the brake fluid level in the
reservoir might go down. The first is that the brake fluid
goes down to an acceptable level during normal brake
lining wear. When new linings are put in, the fluid level
goes back up. The other reason is that fluid is leaking outof the brake system. If it is, you should have your brake
system fixed, since a leak means that sooner or later your
brakes won't work well, or won't work at all.
So, it isn't a good idea to ªtop offº your brake fluid.
Adding brake fluid won't correct a leak. If you add fluid
when your linings are worn, then you'll have too much
fluid when you get new brake linings. You should add
(or remove) brake fluid, as necessary, only when work is
done on the brake hydraulic system.
CAUTION:
If you have too much brake fluid, it can spill on
the engine. The fluid will burn if the engine is
hot enough. You or others could be burned,
and your vehicle could be damaged. Add brake
fluid only when work is done on the brake
hydraulic system.
When your brake fluid falls to a low level, your brake
warning light will come on. See ªBrake System Warning
Lightº in the Index.

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6-28
What to Add
When you do need brake fluid, use only DOT
-3 brake
fluid. Use new brake fluid from a sealed container only.
Refer to ªRecommended Fluids and Lubricantsº in the
Maintenance Schedule.
Always clean the brake fluid reservoir cap and the area
around the cap before removing it. This will help keep
dirt from entering the reservoir.
CAUTION:
With the wrong kind of fluid in your brake
system, your brakes may not work well, or they
may not even work at all. This could cause a
crash. Always use the proper brake fluid.
NOTICE:

Using the wrong fluid can badly damage
brake system parts. For example, just a few
drops of mineral
-based oil, such as engine
oil, in your brake system can damage brake
system parts so badly that they'll have to be
replaced. Don't let someone put in the
wrong kind of fluid.

If you spill brake fluid on your vehicle's
painted surfaces, the paint finish can be
damaged. Be careful not to spill brake fluid
on your vehicle. If you do, wash it off
immediately. See ªAppearance Careº in
the Index.

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6-58
Vehicle Identification Number (VIN)
This is the legal identifier for your vehicle. It appears on
a plate in the front corner of the instrument panel, on the
driver's side. You can see it if you look through the
windshield from outside your vehicle. The VIN also
appears on the Vehicle Certification and Service Parts
labels and the certificates of title and registration.
Engine Identification
The 8th character in your VIN is the engine code. This
code will help you identify your engine, specifications
and replacement parts.
Service Parts Identification Label
You'll find this label on the inside of the trunk lid. It's
very helpful if you ever need to order parts. On this
label is:

your VIN,
the model designation,

paint information and

a list of all production options and
special equipment.
Be sure that this label is not removed from the vehicle.
Electrical System
Add-On Electrical Equipment
NOTICE:
Don't add anything electrical to your vehicle
unless you check with your dealer first. Some
electrical equipment can damage your vehicle
and the damage wouldn't be covered by your
warranty. Some add
-on electrical equipment
can keep other components from working as
they should.
Your vehicle has an air bag system. Before attempting to
add anything electrical to your vehicle, see ªServicing
Your Air Bag
-Equipped Vehicleº in the Index.

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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.Fuse Description
1 ABS
2 Starter Solenoid
3 Power Seats, Rear Defog
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

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

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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
4T60E:
Automatic Transaxle
Pan Removal and Replacement 7.0 quarts (6.7 L). . .
After Complete Overhaul 9.6 quarts (9.2 L). . . . . .
* When draining/replacing converter, more fluid will
be needed.
Cooling System Including
Reservoir 11.6 quarts (10.9 L) . . . . . . . . . . . . . . . . .
Refrigerant (R
-134a),
Air Conditioning*1.88 lbs. (0.85 kg) . . . . . . . . . . .
*See ªAir Conditioning Refrigerantsº later in
this section.
Engine Crankcase
Oil and Filter Change 4.5 quarts (4.3 L). . . . . . . . .
Wheel Nut Torque100 lb
-ft (140 N´m) . . . . . . . . . .
Fuel Tank17.5 gallons (66.2 L) . . . . . . . . . . . . . . . . .
*Note: 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.

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6-65 Engine Specifications
Type V6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement 191 CID. . . . . . . . . . . . . . . . . . . . . . . .
Firing Order 1
-2-3-4-5-6 . . . . . . . . . . . . . . . . . . . . . .
Thermostat Temperature 195
F (91
C) . . . . . . . . . . .
Horsepower 160 @ 5200. . . . . . . . . . . . . . . . . . . . . . .
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the
air conditioning system in your vehicle needs
refrigerant, be sure the proper refrigerant is used. If
you're not sure, ask your dealer.
Normal Maintenance
Replacement Parts
Engine/Air Cleaner Filter AC Type A1208C . . . . .
Passenger Compartment Air Filter 10406026 . . . .
Battery AC Type 600 CCA . . . . . . . . . . . . . . . . . . . .
Engine Oil Filter AC Type PF47 . . . . . . . . . . . . . . . PCV Valve AC Type CV892C . . . . . . . . . . . . . . . . . .
Radiator Cap AC Type RC27 . . . . . . . . . . . . . . . . . .
RKE Batteries Type CR2032 (2) or equivalent . . . .
Spark Plugs
3100 (Code M) V6 AC Type 41
-940 . . . . . . . . . . . .
Gap: 0.060 inches (1.52 mm) . . . . . . . . . . . . . . . . . .
Wiper Blade
Type Hook. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Length 22 inches (56 cm). . . . . . . . . . . . . . . . . . . . .
Vehicle Dimensions
Wheelbase 109.0 inches (276.9 cm). . . . . . . . . . . . . .
Tread (Front) 62.0 inches (157.6 cm). . . . . . . . . . . . .
Tread (Rear) 61.1 inches (155.3 cm). . . . . . . . . . . . . .
Overall Length 194.6 inches (494.2 cm). . . . . . . . . . .
Overall Width 72.7 inches (184.5 cm). . . . . . . . . . . . .
Overall Height 56.6 inches (143.8 cm). . . . . . . . . . . .