1999 BUICK CENTURY washer fluid

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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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6-53
Cleaning Glass Surfaces
Glass should be cleaned often. GM Glass Cleaner or a
liquid household glass cleaner will remove normal
tobacco smoke and dust films on interior glass. (See
ªAppearance Care and Materialsº in the Index.)
Don't use abrasive cleaners on glass, because they may
cause scratches. Avoid placing decals on the inside rear
window, since they may have to be scraped off later. If
abrasive cleaners are used on the inside of the rear
window, an electric defogger element may be damaged.
Any temporary license should not be attached across the
defogger grid.
Cleaning the Outside of the
Windshield and Wiper Blades
If the windshield is not clear after using the windshield
washer, or if the wiper blade chatters when running,
wax, sap or other material may be on the blade
or windshield.
Clean the outside of the windshield with GM
Windshield Cleaner, Bon Ami

Powder (non-scratching
glass cleaning powder), GM Part No. 1050011. The
windshield is clean if beads do not form when you rinse
it with water.Grime from the windshield will stick to the wiper blades
and affect their performance. Clean the blade by wiping
vigorously with a cloth soaked in full
-strength
windshield washer solvent. Then rinse the blade
with water.
Check the wiper blades and clean them as necessary;
replace blades that look worn.
Weatherstrips
Silicone grease on weatherstrips will make them last
longer, seal better, and not stick or squeak. Apply
silicone grease with a clean cloth at least every six
months. During very cold, damp weather more frequent
application may be required. (See ªRecommended
Fluids and Lubricantsº in the Index.)
Cleaning the Outside of Your Vehicle
The paint finish on your vehicle provides beauty, depth
of color, gloss retention and durability.
Washing Your Vehicle
The best way to preserve your vehicle's finish is to keep it
clean by washing it often with lukewarm or cold water.

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7-14
Part B: Owner Checks and Services
Listed in this part are owner checks and services which
should be performed at the intervals specified to help
ensure the safety, dependability and emission control
performance of your vehicle.
Be sure any necessary repairs are completed at once.
Whenever any fluids 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 fill.
Engine Oil Level Check
Check the engine oil level and add the proper oil if
necessary. See ªEngine Oilº in the Index for
further details.Engine Coolant Level Check
Check the engine coolant level and add DEX
-COOL

coolant mixture if necessary. See ªEngine Coolantº in
the Index for further details.
Windshield Washer Fluid Level Check
Check the windshield washer fluid level in the
windshield washer tank and add the proper fluid if
necessary. See ªWindshield Washer Fluidº in the Index
for further details.
At Least Once a Month
Tire Inflation Check
Make sure tires are inflated to the correct pressures.
See ªTiresº in the Index for further details.
Cassette Deck Service
Clean cassette deck. Cleaning should be done every
50 hours of tape play. See ªAudio Systemsº in the
Index for further details.

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7-20
Part D: Recommended Fluids
and Lubricants
NOTE: Fluids and lubricants identified below by name,
part number or specification may be obtained from
your dealer.
USAGE
FLUID/LUBRICANT
Engine OilEngine Oil with the American
Petroleum Institute Certified For
Gasoline Engines ªStarburstº
symbol of the proper viscosity. To
determine the preferred viscosity
for your vehicle's engine, see
ªEngine Oilº in the Index.
Engine Coolant50/50 mixture of clean, drinkable
water and use only GM
Goodwrench

DEX-COOL
or
Havoline
DEX-COOL

Coolant. See ªEngine Coolantº in
the Index.
Hydraulic Brake
SystemDelco Supreme 11
Brake Fluid
(GM Part No. 12377967 or
equivalent DOT
-3 Brake Fluid).
USAGEFLUID/LUBRICANT
Windshield
Washer SolventGM Optikleen
Washer Solvent
(GM Part No. 1051515)
or equivalent.
Power Steering
SystemGM Power Steering Fluid (GM
Part No. 1052884
- 1 pint,
1050017
- 1 quart, or equivalent).
Automatic
TransaxleDEXRON
-III Automatic
Transmission Fluid.
Key Lock
CylindersMulti-Purpose Lubricant,
Superlube
(GM Part
No. 12346241 or equivalent).
Hood Latch
Assembly,
Secondary Latch,
Pivots, Spring
Anchor and
Release PawlLubriplate
Lubricant Aerosol
(GM Part No. 12346293 or
equivalent) or lubricant meeting
requirements of NLGI # 2,
Category LB or GC
-LB.
Hood and Door
HingesMulti-Purpose Lubricant,
Superlube
(GM Part
No. 12346241 or equivalent).
Weatherstrip
ConditioningDielectric Silicone Grease (GM
Part No. 12345579 or equivalent).

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9-6
Instrument Panel 2-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cluster 2-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse Block 6-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Instrument Panel Brightness Control 2-40 . . . . . . . . . . . . . . . .
Interior Lamps 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jack, Tire 5-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Jump Starting 5-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key Lock Cylinders Service 7-15 . . . . . . . . . . . . . . . . . . . . .
Key Reminder Warning 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . .
Keys 2-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Labels
Certification 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Parts Identification 6-58 . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information 4-30 . . . . . . . . . . . . . . . . . . . . . .
Vehicle Identification Number 6-58 . . . . . . . . . . . . . . . . . . .
Lamps
Courtesy 2
-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dome 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interior 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reading, Rearview Mirror 2-42 . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle 2-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Leaving Your Vehicle with the Engine Running 2-27 . . . . . . .
Lighter 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lights
Air Bag Readiness 1
-21, 2-51 . . . . . . . . . . . . . . . . . . . . . . .
Anti-Lock Brake System Warning 2-53, 4-7 . . . . . . . . . . . . Brake System Warning 2
-52 . . . . . . . . . . . . . . . . . . . . . . . . .
Change Oil Soon 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging System 2-52 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cruise 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door/Trunk Ajar Warning 2-63 . . . . . . . . . . . . . . . . . . . . . .
Engine Coolant Temperature Light 2-55 . . . . . . . . . . . . . . .
Enhanced Traction System Active 2-54 . . . . . . . . . . . . . . . .
Enhanced Traction System Warning 2-53 . . . . . . . . . . . . . .
Interior 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Coolant Warning 2-56, 6-23 . . . . . . . . . . . . . . . . . . . .
Low Fuel 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Oil Level 2-61, 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Tire 2-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Traction 2-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Washer Fluid Warning 2-35, 2-63 . . . . . . . . . . . . . . . .
Oil Warning 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Belt Reminder 1-5, 2-51 . . . . . . . . . . . . . . . . . . . . . .
Security 2-62 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Engine Soon 2-58 . . . . . . . . . . . . . . . . . . . . . . . . . .
Service Vehicle Soon 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . .
Loading Your Vehicle 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Locks
Cylinders 7
-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delayed Locking 2-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Door 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Transaxle Lock Check 7-17 . . . . . . . . . . . . . . . . . .
Key Lock Cylinder Service 7-15 . . . . . . . . . . . . . . . . . . . . .
Lockout Protection Feature 2-7 . . . . . . . . . . . . . . . . . . . . . .
Manual Door 2-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Door 2-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Programmable Automatic Power Door 2-5 . . . . . . . . . . . . .

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9-7
Rear-Door Child Security 2-6 . . . . . . . . . . . . . . . . . . . . . . .
Trunk 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Control 4-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low
Coolant Warning Light 2
-56, 6-23 . . . . . . . . . . . . . . . . . . . .
Fuel Light 2-64 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Level Light 2-61, 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire Light 2-57 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction Light 2-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washer Fluid Warning Light 2-35, 2-63 . . . . . . . . . . . . . . .
Low-Beam Headlamps 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubricants and Fluids 7-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication Service, Body 7-15 . . . . . . . . . . . . . . . . . . . . . . . .
Magnetic Variable Effort Steering4-10 . . . . . . . . . . . . . . .
Maintenance, Normal Replacement Parts 6-65 . . . . . . . . . . . .
Maintenance Record 7-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Schedule 7-1, 7-5 . . . . . . . . . . . . . . . . . . . . . . . .
How it's Organized 7-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction 7-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Owner Checks and Services 7-14 . . . . . . . . . . . . . . . . . . . . .
Recommended Fluids and Lubricants 7-20 . . . . . . . . . . . . .
Periodic Maintenance Inspections 7-18 . . . . . . . . . . . . . . . .
Scheduled Maintenance Services 7-4 . . . . . . . . . . . . . . . . . .
Your Vehicle and the Environment 7-2 . . . . . . . . . . . . . . . .
Maintenance, Underbody 6-56 . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance When Trailer Towing 4-38 . . . . . . . . . . . . . . . . .
Malfunction Indicator Lamp 2-58 . . . . . . . . . . . . . . . . . . . . . .
Manual
Door Locks 2
-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Seat 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Manual Single Zone Climate Control 3
-2 . . . . . . . . . . . . . . . .
Methanol 6-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mirrors 2-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Dimming/Heated Outside Rearview 2-44 . . . . .
Convex Outside 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrochromic Day/Night Rearview 2-43 . . . . . . . . . . . . . .
Power Outside Foldaway 2-43 . . . . . . . . . . . . . . . . . . . . . . .
Visor Vanity 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MMT 6-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mountain Roads 4-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multifunction Lever 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net, Trunk Convenience 2-45 . . . . . . . . . . . . . . . . . . . . . . . .
Neutral, Automatic Transaxle 2-22 . . . . . . . . . . . . . . . . . . . . .
New Vehicle ªBreak-Inº 2-16 . . . . . . . . . . . . . . . . . . . . . . . . .
Night Vision 4-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer, Trip 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Offices, Customer Assistance 8-4 . . . . . . . . . . . . . . . . . . . . . .
Off-Road Recovery 4-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil, Engine 6-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Warning Light 2-60 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OnStar
2-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overdrive, (
) Automatic 2-23 . . . . . . . . . . . . . . . . . . . . . . . .
Overheated Engine Protection Operating Mode 5-9 . . . . . . . .
Overheating Engine 5-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-12
Vehicle
Control 4-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Damage Warnings iv. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dimensions 6
-65 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identification Number 6-58 . . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage 6-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ventilation System 3
-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visor Vanity Mirrors 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Visors, Sun 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Devices 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Lights, Gages and Indicators 2-50 . . . . . . . . . . . . . . .
Warranty Information 8-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Washing Your Vehicle 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weatherstrip Lubrication 7-15 . . . . . . . . . . . . . . . . . . . . . . . . .
Weatherstrips 6-53 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Wheel
Alignment 6
-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Nut Torque 5-29, 6-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacement 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Used Replacement 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Window Lock 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windows 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto-Down 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power 2-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Washer 2-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid 2-35, 6-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluid Level Check 7-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield Wipers 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Blade Replacement 6-39 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses 6-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Winter Driving 4-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiper Blade Check 7-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring, Headlamp 6-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wrecker Towing 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .