1994 BUICK CENTURY lock

Halogen Bulbs
Headlamp Bulb Replacement
For the type of bulb, see the Index under "Replacement
Bulbs."
1. Turn the bulb assembly counterclockwise 1/6 turn,
pressing in firmly, until the flanges align with the
slots in
the retainer ring.
2. Pull out the bulb assembly.
3. Disconnect the bulb base from the wiring harness by
lifting the plastic locking tab.
To replace the bulb
assembly:
1.
2.
Snap a new bulb into
the wiring harness
(A).
Make sure the locking
tab
(B) is over the lock
(C).
Install the bulb
assembly by putting the
small tab
(D) in the
small notch in the
retainer ring
(E).
3. Turn the bulb assembly 1/6 turn clockwise to lock it
in place.
232
ProCarManuals.com

Front Turn and Parking Bulb and/or Side
Marker Bulb Replacement
1. Raise the hood.
2. Insert a screwdriver into the loop of the spring,
which can be seen just behind the bulb assembly.
3. Pull the spring to the rear and slightly toward the
outside
of the car until the detent releases from the
notch in the headlight mounting frame.
,I'
4. The bulb assembly is now loose. Pull it forward until
the bulb assembly can be reached.
To replace the turn/park bulb:
1. Rotate the bulb socket housing 1/4 turn
counterclockwise.
2. Push in and turn the bulb counterclockwise to
remove
it.
3. Put in the new bulb and turn it clockwise.
4. Snap the wire connector onto the bulb assembly.
233
ProCarManuals.com

. ..‘
To replace the side marker bulb:
1. Remove the socket by turning it counterclockwise
2. Remove the bulb by pulling it straight out of the
and
pulling it straight out.
socket.
3. Insert the new bulb by pressing it straight into the
socket.
4. Insert the socket by pressing it straight into the bulb
hole and turning it clockwise.
I
To reinstall the lamp:
1. Guide the latch spring
through the opening in
the metal inner panel.
2. Engage the two blades on the lamp into the slots on
the headlamp while engaging the two pins at the rear
of the lamp openings into the sockets on the rear of
the lamp. The lamp is now in place.
3. Insert a screwdriver into the loop on the latch spring.
Pull the spring to the rear and slightly center
of the
vehicle until the detent engages into the notch.
Taillight Bulb Replacement (Sedan)
For the type of bulb, see the Index under “Replacement
Bulbs.”
Replacing bulbs in the taillight housing is very difficult,
and we recommend that you see your dealer when you
need a bulb replaced.
ProCarManuals.com

Taillight Bulb Replacement (Wagon)
For the type of bulb, see the Index under “Replacement
Bulbs.”
1. Open the liftgate.
2. Remove the three Phillips head screws.
3. Pull the taillight housing away from the body of the
vehicle.
4. Press the bulb housing release lever and turn the
housing
1/6 turn counterclockwise to remove it.
5. To remove the bulb, push in and rotate it
counterclockwise.
6. Reverse all steps to reassemble the taillight.
235
ProCarManuals.com

r Fuse Usage
I
Fuse Amp Circuitry
1 15 ECM, MAF Sensor (3 100 Engine only)
2 20 ECM Injectors/Coil
3
4
5
6
7
8
9
10
11
12
13
14
15
I 16
5
15
10
20
20
10
20 20
30"
5
10
30"
25
20
Automatic Door LockAJnlock
Turn Signal Flasher, Back-up Lights, Trunkbiftgate Release
Supplemental Inflatable Restraint (Air Bag)
Tail, Park, Side Marker, License Plate, Stop/Turn Signal Heater/Air Conditioner
Gages, Warning Indicators, Torque Convert Clutch, Audible Warning\
System, Computer Command
Control, Trunk Release, Brake Warning Indicator, Rear Defog Swit\
ch, Speedometer
Stop Lights, Hazard Flashers
Interior, Underhood, Courtesy,
I/P, Trunk Lights, Door Locks, Horn Relay, Passive Restraint System, \
Deck
Lid Release, Power Antenna
Liftgate Release, Power Windows
Illumination for:
I/P, Radio, Pod Lights, Ashtray, Console Light, Heater-A/C Control, D\
efog Switch,
Headlight Switch
Radio, Cruise Control
Seats, Door Locks, Rear Defog
Windshield WipefWash
Cigarette Lighter
255
ProCarManuals.com

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.
Headlights
The headlight wiring is protected by a circuit breaker in
the light switch. An electrical overload will cause the
lights
to go on and off or, in some cases, to remain off. If
this happens, have your headlight system checked right
away.
Windshield Wipers
The windshield wiper motor is protected by a circuit
breaker and a fuse.
If the motor overheats due to heavy snow, etc.,
the wiper will stop until the motor cools.
If
the overload is caused by some electrical problem, have
it fixed.
Power Windows and Other Window
Options
Circuit breakers in the fuse panel protect the power
windows and other power accessories. When the current
load is too heavy, the circuit breaker opens and closes,
protecting
the circuit until the problem is fixed.
Cigarette Lighter Fuse and Safety Belt Fuse
These fuses are located behind the glove box. The fuse
holders are taped together with gray tape.
Other Fuses
The Safety Belt/Chime (ICAM) Module fuse and the
Remote Lock Control fuse are located behind the fuse
block, above the hush panel.
The Fuel Pump and
ECM fuses are located under the
hood.
256
ProCarManuals.com

At Least Once a Month
WHAT TO DO
Check tire inflation. Make sure they are
inflated
to the pressures specified on the
Tire-Loading Information label located
on the rear edge of the driver’s door. See
“Tires”
in the Index for further details.
Cassette Deck Clean
cassette deck. Cleaning should
be done every
15 hours of tape play. See
“Audio Systems”
in the Index for
further details.
At Least Once a Year
CHECK OR
SERVICE
Key Lock
Cylinders
L
Body Lubrication
WHAT TO DO
Lubricate the key lock cylinders with
the lubricant specified in Section D.
Lubricate all body door hinges. Also
lubricate all hinges and latches,
including those for the hood, rear
compartment, glove box door, console
door and any folding seat hardware.
Section
D tells you what to use.
CHECK OR
SERVICE
Starter Switch
WHAT TO DO
CAUTION: When you are doing this
check, the
vehicle could move
suddenly. If it does, you or others
could
be injured. Follow the steps
below.
1. Before you start, be sure you have
enough room around the vehicle.
2. Firmly apply both the parking brake
(see “Parking Brake”
in the index if
necessary) and the regular brake.
NOTE: Do
not use the accelerator
pedal, and be ready
to turn off the
engine immediately
if it starts.
3. Try to start the engine in each gear.
The starter should work
only in “P”
(Park) or
“N” (Neutral). If the starter
works
in any other position, your
vehicle needs service.
273
ProCarManuals.com

WHAT TO DO
Steering Column brake set,
try to turn the key to “LOCK”
Lock While parked,
and with the parking
in each shift lever position.
0 The key should turn to “LOCK”
only when the shift lever is
in “P’
(Park).
The key should come out only in
“LOCK.”
CHECK OR
SERVICE
Parking Brake and
Automatic
Transaxle
“P’
(Park) Mechanism
Check
WHAT TO DO
CAUTION: When you are doing this
check, your vehicle could begin to
move. You or others could be injure&
and property could be damaged.
Make sure there is room in front of
your vehide in case it begins to roll.
Be ready to apply the regular brake
at once should the vehicle begin to
move.
Park on a fairly steep hill, with the
vehicle facing downhill. Keeping your
foot on
the regular brake, set the
parking brake.
0 To check the parking brake: With the
engine running and transaxle
in “N”
(Neutral), slowly remove foot
pressure from the regular brake
pedal.
Do this until the vehicle is
held by the parking brake only.
0 To check the “P’ (Park) mechanism’s
holding ability:
Shift to “P” (Park).
Then release all brakes.
274
ProCarManuals.com