1999 BUICK CENTURY turn signal bulb

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2-33
Turn Signal/Multifunction Lever
The lever on the left side of the steering column
includes your:

Turn Signal and Lane Change Indicator

Headlamp High/Low Beam Changer

Windshield Wipers

Windshield Washer

Cruise Control (If Equipped)

Flash
-to-Pass
Turn Signal and Lane Change Indicator
The turn signal has the following positions: two upward
(for right) and two downward (for left). These positions
allow you to signal a turn or a lane change.
To signal a turn, move the lever all the way up or down.
When the turn is finished, the lever will return automatically.
An arrow on the instrument
panel will flash in the
direction of the turn or
lane change.
To signal a lane change, just raise or lower the lever
until the arrow starts to flash. Hold it there until you
complete your lane change. The lever will return by
itself when you release it.
If the arrow flashes faster than normal as you signal a
turn or a lane change, a signal bulb may be burned out
and other drivers won't see your turn signal.
If a bulb is burned out, replace it to help avoid an
accident. If the arrows don't go on at all when you
signal a turn, check for burned
-out bulbs and then check
the fuse (see ªFuses and Circuit Breakersº in the Index).

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4-37 Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a different
turn signal flasher and/or extra wiring. Check with your
dealer. The arrows on your instrument panel will flash
whenever you signal a turn or lane change. Properly
hooked up, the trailer lamps will also flash, telling other
drivers you're about to turn, change lanes or stop.
When towing a trailer, the arrows on your instrument
panel will flash for turns even if the bulbs on the trailer
are burned out. Thus, you may think drivers behind you
are seeing your signal when they are not. It's important
to check occasionally to be sure the trailer bulbs are
still working.
Driving On Grades
Reduce speed and shift to a lower gear before you start
down a long or steep downgrade. If you don't shift
down, you might have to use your brakes so much that
they would get hot and no longer work well.
On a long uphill grade, shift down and reduce your
speed to around 45 mph (70 km/h) to reduce the
possibility of engine and transaxle overheating.
If you are towing a trailer, you may want to drive in
DRIVE (D) instead of AUTOMATIC OVERDRIVE (
)
(or, as you need to, a lower gear).
Parking on Hills
CAUTION:
You really should not park your vehicle, with a
trailer attached, on a hill. If something goes
wrong, your rig could start to move. People can
be injured, and both your vehicle and the trailer
can be damaged.
But if you ever have to park your rig on a hill, here's
how to do it:
1. Apply your regular brakes, but don't shift into
PARK (P) yet.
2. Have someone place chocks under the
trailer's wheels.
3. When the wheel chocks are in place, release the
regular brakes until the chocks absorb the load.
4. Reapply the regular brakes. Then apply your parking
brake, and shift to PARK (P).
5. Release the regular brakes.

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6-34
Passenger's Side Headlamp Shown
B. Horizontal aim adjustment screw
C. Horizontal block index plate
D. Vertical aiming level
Start with the horizontal aim. The adjustment screws can
be turned with an E8 Torx

socket.Once the horizontal aim is adjusted, then adjust the
vertical aim.
1. Turn the horizontal aiming screw until the indicator
is lined up with zero.
2. Turn the vertical aiming screw until the level bubble
is lined up with zero.
Front Parking and Turn Signal Lamp
1. Remove the headlamp assembly. Refer to the
removal procedure earlier in this section.
2. Remove the rubber bulb access cover.
3. Twist and pull the sidemarker lamp socket
counterclockwise from the headlamp assembly.
4. Holding the base of the bulb, pull the bulb from
the socket.
5. Push the new bulb into the socket.
6. Put the socket back into the headlamp assembly and
turn it clockwise until it is secure.
7. Replace the rubber bulb access cover.
8. Replace the headlamp assembly.

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6-36 Tail/Stop/Turn Signal Lamp
1. Remove the plastic wing nuts (A). (Pliers may be
required to remove the wing nuts.)
2. Pull the taillamp housing (B) away from the body of
the vehicle.
3. Squeeze the tab on the socket and turn the
socket counterclockwise.
4. Pull out the socket.
5. Pull the bulb out of the socket. (There are two bulbs
on each taillamp.)
6. Push in a new bulb.
7. Replace the socket into the housing and
turn clockwise.
8. Replace the taillamp housing to the body of
the vehicle.
9. Install and tighten the three plastic wing nuts.

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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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9-5
Flat Tire, Changing 5-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fluids and Lubricants 7-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Foreign Countries, Fuel 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
French Language Manual ii. . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Parking and Turn Signal Lamp Bulb
Replacement 6
-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Storage Armrest 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel 6-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canadian 6-3, 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filling Your Tank 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gage 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In Foreign Countries 6-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuses and Circuit Breakers 6-59 . . . . . . . . . . . . . . . . . . . . . . .
Gages
Engine Coolant Temperature 2-56 . . . . . . . . . . . . . . . . . . . .
Fuel 2-63 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAWR 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Gear Positions, Automatic Transaxle 2-20 . . . . . . . . . . . . . . . .
Glove Box 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GM Mobility Program for Persons with Disabilities 8-5 . . . . .
Gross Axle Weight Rating (GAWR) 4-30 . . . . . . . . . . . . . . . .
Gross Vehicle Weight Rating (GVWR) 4-30 . . . . . . . . . . . . . .
Guide en Fran†ais ii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GVWR 4
-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Halogen Bulbs 6-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hazard Warning Flashers 5-2 . . . . . . . . . . . . . . . . . . . . . . . . . .
Head Restraints 1-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Headlamps
Aiming 6
-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulb Replacement 6-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash-to-Pass 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High/Low Beam Changer 2-34 . . . . . . . . . . . . . . . . . . . . . .
On Reminder 2-39 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wiring 6-59 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hearing Impaired, Customer Assistance 8-4 . . . . . . . . . . . . . .
Heating 3-4, 3-6, 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High-Beam Headlamps 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . .
Highway Hypnosis 4-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hill and Mountain Roads 4-23 . . . . . . . . . . . . . . . . . . . . . . . . .
Hitches, Trailer 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hood
Checking Things Under 6
-8 . . . . . . . . . . . . . . . . . . . . . . . . .
Release 6-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hydroplaning 4-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Positions 2-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ignition Transaxle Lock Check 7-17 . . . . . . . . . . . . . . . . . . . .
Illuminated Entry 2-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation, Tire 6-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspections
Brake System 7
-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Cooling System 7-18 . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust System 7-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle Boot 7-18 . . . . . . . . . . . . . . . . . . . . . . . . .
Front Drive Axle Seal 7-18 . . . . . . . . . . . . . . . . . . . . . . . . .
Steering 7-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Suspension 7-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Throttle System 7-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-10
Service 6-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bulletins, Ordering 8-11, 8-12 . . . . . . . . . . . . . . . . . . . . . . .
Engine Soon Light 2-58 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manuals, Ordering 8-11, 8-12 . . . . . . . . . . . . . . . . . . . . . . .
Parts Identification Label 6-58 . . . . . . . . . . . . . . . . . . . . . . .
Publications, Ordering 8-11, 8-12 . . . . . . . . . . . . . . . . . . . .
Work, Doing Your Own 6-2 . . . . . . . . . . . . . . . . . . . . . . . . .
Service and Appearance Care 6-1 . . . . . . . . . . . . . . . . . . . . . .
Service Vehicle Soon Light 2-63 . . . . . . . . . . . . . . . . . . . . . . .
Servicing Your Air Bag-Equipped Vehicle 1-25 . . . . . . . . . . .
Sheet Metal Damage 6-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shift Lever 2-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shifting
Automatic Transaxle 2
-20 . . . . . . . . . . . . . . . . . . . . . . . . . .
Into Park 2-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Out of Park 2-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Shoulder Belt Height Adjuster 1-13 . . . . . . . . . . . . . . . . . . . . .
Signaling Turns 2-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Six-Way Power Seat 1-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Skidding 4-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sound Equipment, Adding 3-30 . . . . . . . . . . . . . . . . . . . . . . . .
Spare Tire, Compact 5-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications and Capacities 6-64 . . . . . . . . . . . . . . . . . . . . . .
Specifications, Engine 6-64 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speech Impaired, Customer Assistance 8-4 . . . . . . . . . . . . . . .
Speedometer 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stains, Cleaning 6-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Switch Check 7-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting Your V6 Engine 2-18 . . . . . . . . . . . . . . . . . . . . . . . . .
Steam 5-10, 5-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Steering
in Emergencies 4
-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Magnetic Variable Effort4-10 . . . . . . . . . . . . . . . . . . . . .
Power 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TILT-WHEEL2-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tips 4-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Steering Wheel Touch Controls, Audio 3-29 . . . . . . . . . . . . . .
Storage Compartments 2-44 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage, Vehicle 6-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stuck: In Sand, Mud, Ice or Snow 5-33 . . . . . . . . . . . . . . . . . .
Sun Visors 2-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols, Vehicle v. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tail/Stop/Turn Signal Lamp Bulb Replacement 6-36 . . . . . .
Tape Player Care 3-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature Control 3-2, 3-5, 3-7, 3-8 . . . . . . . . . . . . . . . . .
Theft 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent Feature 3-26 . . . . . . . . . . . . . . . . . . . . . . . . . .
Theft-Deterrent System 2-15 . . . . . . . . . . . . . . . . . . . . . . . . . .
THEFTLOCK
3-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermostat 6-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Third Gear, Automatic Transaxle 2-23 . . . . . . . . . . . . . . . . . . .
TILT-WHEEL Adjustable Steering Column 2-32 . . . . . . . .
Time, Setting the 3-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire-Loading Information Label 4-30 . . . . . . . . . . . . . . . . . . .
Tires 6-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Alignment and Balance 6-48 . . . . . . . . . . . . . . . . . . . . . . . .
Buying New 6-46 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Chains 6-49 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing a Flat 5-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cleaning 6-55 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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9-11
Compact Spare 5-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation 6-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inflation Check 7-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection and Rotation 6-43 . . . . . . . . . . . . . . . . . . . . . . . .
Loading 4-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure 6-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Monitor System 6-42 . . . . . . . . . . . . . . . . . . . . . . .
Storing the Flat 5-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storing the Spare 5-31 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature 6-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Traction 6-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Treadwear 6-47 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Uniform Quality Grading 6-47 . . . . . . . . . . . . . . . . . . . . . . .
Wear Indicators 6-45 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wheel Replacement 6-48 . . . . . . . . . . . . . . . . . . . . . . . . . . .
When It's Time for New 6-45 . . . . . . . . . . . . . . . . . . . . . . .
Top Strap 1-42 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Lock 2-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque, Wheel Nut 5-29, 6-44 . . . . . . . . . . . . . . . . . . . . . . . . .
Towing a Trailer 4-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Towing Your Vehicle 5-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trailer
Backing Up 4
-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brakes 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driving on Grades 4-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Driving with 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Cooling When Towing 4-38 . . . . . . . . . . . . . . . . . . .
Following Distance 4-36 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hitches 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
If You Decide to Pull A 4-33 . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance When Towing 4-38 . . . . . . . . . . . . . . . . . . . . . Making Turns 4
-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parking on Hills 4-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Passing 4-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Chains 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tongue Weight 4-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total Weight on Tires 4-35 . . . . . . . . . . . . . . . . . . . . . . . . . .
Towing 4-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signals 4-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Weight 4-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
When You Are Ready to Leave After Parking
on a Hill 4
-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transaxle Fluid 6-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transmitters, Remote Keyless Entry 2-7, 2-12 . . . . . . . . . . . .
Transportation, Courtesy 8-7 . . . . . . . . . . . . . . . . . . . . . . . . . .
Trip, Before Leaving on a Long 4-22 . . . . . . . . . . . . . . . . . . . .
Trip Odometer 2-50 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trunk 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lock 2-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trunk Convenience Net 2-45 . . . . . . . . . . . . . . . . . . . . . . . . . .
Trunk Lid Applique Bulb Replacement 6-37 . . . . . . . . . . . . . .
TTY Users 8-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal and Lane Change Indicator 2-33 . . . . . . . . . . . . .
Turn Signal On Chime 2-34 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn Signal/Multifunction Lever 2-33 . . . . . . . . . . . . . . . . . . .
Turn Signals When Towing a Trailer 4-37 . . . . . . . . . . . . . . . .
Tw o-Way Manual Seat 1-2 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Underbody Flushing Service 7-17 . . . . . . . . . . . . . . . . . . . . .
Underbody Maintenance 6-56 . . . . . . . . . . . . . . . . . . . . . . . . .
Underhood Electrical Center (Passenger's Side) 6-62 . . . . . . .