2011 BUICK LACROSSE turn signal bulb

Black plate (4,1)Buick LaCrosse Owner Manual - 2011
6-4 Lighting
Adaptive Forward
Lighting (AFL)
The Adaptive Forward Lighting
System (AFL) pivots the headlamps
horizontally to provide greater
road illumination while turning.
To enable AFL, set the exterior
lamp switch to the AUTO position.
Moving the switch out of the AUTO
position deactivates the system.
AFL operates when the vehicle
speed is greater than 3 km/h
(2 mph). AFL does not operate
when the transmission is in
R (Reverse). AFL is not immediately
operable after starting the vehicle;
driving a short distance is required
to calibrate the AFL. SeeExterior
Lamp Controls on page 6‑1.
Hazard Warning Flashers
|
Hazard Warning Flasher:
Press this button located on the
instrument panel below the climate
control system, to make the front
and rear turn signal lamps flash
on and off. Press again to turn the
flashers off.
The hazard warning flashers turn on
automatically if the airbags deploy.
Turn and Lane-Change
Signals
Move the lever all the way up or
down to signal a turn. An arrow on the instrument panel
cluster flashes in the direction of the
turn or lane change.
Raise or lower the lever until the
arrow starts to flash to signal a lane
change. Hold it there until the lane
change is completed. If the lever is
briefly pressed and released, the
turn signal flashes three times.
The turn and lane‐change signal
can be turned off manually by
moving the lever back to its
original position.
If after signaling a turn or lane
change the arrow flashes rapidly
or does not come on, a signal bulb
might be burned out.
Have the bulbs replaced. If the bulb
is not burned out, check the fuse.
See
Fuses and Circuit Breakers on
page 10‑39.

Black plate (58,1)Buick LaCrosse Owner Manual - 2011
9-58 Driving and Operating
Making Turns
Notice:Making very sharp turns
while trailering could cause the
trailer to come in contact with
the vehicle. The vehicle could
be damaged. Avoid making very
sharp turns while trailering.
When turning with a trailer, make
wider turns than normal so the
trailer will not strike soft shoulders,
curbs, road signs, trees or other
objects. Use the turn signal well in
advance and avoid jerky or sudden
maneuvers.
Turn Signals when Towing a
Trailer
The turn signal indicators on the
instrument panel flash whenever
signaling a turn or lane change.
Properly hooked up, the trailer
lamps also flash, telling other
drivers the vehicle is turning,
changing lanes or stopping.
When towing a trailer, the arrows on
the instrument panel flash for turns
even if the bulbs on the trailer are
burned out. Check occasionally to
be sure the trailer bulbs are still
working.
Driving on Grades
Reduce speed and shift to a
lower gear before starting down
a long or steep downgrade. If the
transmission is not shifted down,
the brakes might have to be used
so much that they would get hot
and no longer work well. The vehicle can tow in D (Drive).
Use a lower gear if the transmission
shifts too often.
When towing at high altitude on
steep uphill grades, engine coolant
boils at a lower temperature than
at normal altitudes. If the engine is
turned off immediately after towing
at high altitude on steep uphill
grades, the vehicle could show
signs similar to engine overheating.
To avoid this, let the engine run
while parked, preferably on level
ground, with the transmission in
P (Park) for a few minutes before
turning the engine off. If the
overheat warning comes on, see
Engine Overheating on page 10‑21.

Black plate (1,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-1
Vehicle Care
General Information
General Information . . . . . . . . . . 10-2
California Proposition65 Warning . . . . . . . . . . . . . . . . . 10-3
California Perchlorate Materials Requirements . . . . 10-3
Accessories and Modifications . . . . . . . . . . . . . . . 10-3
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 10-4
Hood . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Engine Compartment Overview . . . . . . . . . . . . . . . . . . . 10-6
Engine Oil . . . . . . . . . . . . . . . . . . . 10-9
Engine Oil Life System . . . . . 10-13
Automatic Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 10-15
Engine Air Cleaner/Filter . . . . 10-15 Cooling System . . . . . . . . . . . . 10-17
Engine Coolant . . . . . . . . . . . . . 10-18
Engine Overheating . . . . . . . . 10-21
Overheated Engine
Protection
Operating Mode . . . . . . . . . . . 10-22
Power Steering Fluid . . . . . . . 10-23
Washer Fluid . . . . . . . . . . . . . . . 10-24
Brakes . . . . . . . . . . . . . . . . . . . . . 10-24
Brake Fluid . . . . . . . . . . . . . . . . . 10-25
Battery . . . . . . . . . . . . . . . . . . . . . 10-27
Starter Switch Check . . . . . . . 10-27
Automatic Transmission Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . 10-28
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . 10-28
Park Brake and P (Park) Mechanism Check . . . . . . . . 10-29
Wiper Blade Replacement . . . . . . . . . . . . . . 10-29
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . 10-30
Bulb Replacement
Bulb Replacement . . . . . . . . . . 10-33
Halogen Bulbs . . . . . . . . . . . . . . 10-33
High Intensity Discharge(HID) Lighting . . . . . . . . . . . . . 10-33
Headlamps, Front Turn
Signal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-34
Taillamps, Turn Signal, Stoplamps, and Back-Up
Lamps . . . . . . . . . . . . . . . . . . . . 10-35
License Plate Lamp . . . . . . . . 10-36
Replacement Bulbs . . . . . . . . . 10-37
Electrical System
Electrical System Overload . . . . . . . . . . . . . . . . . . 10-38
Fuses and Circuit
Breakers . . . . . . . . . . . . . . . . . . 10-39
Engine Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-39
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-42
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . 10-44

Black plate (34,1)Buick LaCrosse Owner Manual - 2011
10-34 Vehicle Care
Headlamps, Front Turn
Signal and Parking
Lamps
Base Headlamp Assembly
The base model vehicle has a
halogen high-beam headlamp,
a low-beam/Daytime Running
Lamp (DRL) headlamp, and a
turn signal/parking lamp on the
headlamp assembly.
To replace one of these bulbs:
1. Open the hood. SeeHood on
page 10‑5.
A. Low-Beam Headlamp/DRL
B. High-Beam Headlamp
C. Parking/Turn Signal Lamp
2. If replacing a headlamp bulb, remove the dust cover from the
back of the headlamp housing
by turning counterclockwise
one‐quarter turn. 3. Remove the bulb socket
from the headlamp by
turning counterclockwise
one‐quarter turn.
4. Remove the bulb from the socket. If replacing the
high/low‐beam bulb, pry the
two clips on either end of the
bulb and pull straight out.
5. Install the new bulb in the socket.

Black plate (35,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-35
6. Install the bulb socket by turningclockwise one‐quarter turn.
7. If a headlamp bulb was replaced, install the dust cover
in the back of the headlamp
housing by turning clockwise
one‐quarter turn.
Uplevel Headlamp Assembly
The uplevel model vehicle has
a high intensity discharge (HID)
high/low beam, a dedicated DRL
and a parking/turn signal lamp on
the headlamp assembly. See High
Intensity Discharge (HID) Lighting
on page 10‑33 for more information.
To replace one of these bulbs:
1. Open the hood. See Hood on
page 10‑5.
A. DRL Lamp
B. Parking/Turn Signal Lamp
2. Turn the bulb socket counterclockwise to remove it
from the headlamp assembly.
3. Pull the bulb straight out from the socket.
4. Push the new bulb into the socket and reinstall the socket
into the headlamp assembly by
turning it clockwise.
Taillamps, Turn Signal,
Stoplamps, and Back-Up
Lamps
A. Turn Signal Lamp
B. Back–Up Lamp
To replace one of these lamps:
1. Open the trunk. See Trunk on
page 2‑12.
2. Remove fasteners and pull back the trunk trim.

Black plate (36,1)Buick LaCrosse Owner Manual - 2011
10-36 Vehicle Care
3. Remove the four plastic wingnuts retaining the taillamp
assembly in place.
4. Pull out the taillamp assembly and disconnect the wiring
harness.
A. Back-Up Lamp
B. Turn Signal Lamp 5. Turn the bulb socket
counterclockwise to remove it.
6. Pull the old bulb straight out of the bulb socket.
7. Push the new bulb straight into the bulb socket until it clicks.
8. Turn the bulb socket clockwise to reinstall.
9. Reconnect the wiring harness.
10. Push the taillamp assembly back into place on the vehicle.
11. Turn the four wing nuts clockwise to reinstall them.
12. Place the trunk trim to its original location.
License Plate Lamp
The license plate lamps for this
vehicle are on the trunk lid.
To replace one of these bulbs:
1. Open the trunk. See Trunk on
page 2‑12 for more information.
2. Push the end on either of the
lamp assemblies (passenger
side shown) and then move the
lamp assembly down to remove
it from the trunk lid.

Black plate (37,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-37
A. Bulb Socket
B. Bulb
C. Lamp Assembly3. Turn the bulb socket (A)
counterclockwise to remove it
from the lamp assembly (C).
4. Pull the bulb (B) straight out of the bulb socket.
5. Push the replacement bulb straight into the bulb socket and
turn the bulb socket clockwise to
install it into the lamp assembly.
6. Move the lamp assembly into the trunk lid engaging the clip
side first.
7. Push on the lamp side opposite the clip until the lamp assembly
snaps into place.
Replacement Bulbs
Exterior Lamp Bulb
Number
Back-Up Lamp W16WLL
Daytime Running
Lamp (Uplevel) 3157K LCP
Front Turn Signal/
Parking Lamp 3757NAK
LCP
Headlamp High
Beam (Base) H9
Headlamp Low
Beam (Base) H11LL
License Plate Lamp W5WLL
Rear Turn Signal 3757AK
LCP
For replacement bulbs not listed
here, contact your dealer.

Black plate (2,1)Buick LaCrosse Owner Manual - 2011
i-2 INDEX
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-27Jump Starting . . . . . . . . . . . . . . . 10-86
Load Management . . . . . . . . . . . . . 6-6
Power Protection . . . . . . . . . . . . . . 6-7
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-33
Blade Replacement, Wiper . . . 10-29
Bluetooth . . . . . . . . . . 7-46, 7-48, 7-53
Brake System Warning Light . . . 5-19
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-24 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-32
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-35
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-25
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-33
System Messages . . . . . . . . . . . . 5-33
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3 Break-In, New Vehicle . . . . . . . . . 9-16
Bulb Replacement . . . . . . . . . . . . 10-37
Fog Lamps . . . . . . . . . . . . . . . . . . . . 6-5
Halogen Bulbs . . . . . . . . . . . . . . 10-33
Headlamp Aiming . . . . . . . . . . . 10-30
Headlamps . . . . . . . . . . . . . . . . . 10-33
Headlamps, Front TurnSignal and Parking
Lamps . . . . . . . . . . . . . . . . . . . . 10-34
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . 10-33
License Plate Lamps . . . . . . . 10-36
Taillamps, Turn Signal, Stoplamps, and
Back-Up Lamps . . . . . . . . . . . 10-35
Buying New Tires . . . . . . . . . . . . . 10-64
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-5
California
Fuel Requirements . . . . . . . . . . . 9-51
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-3
Camera, Rear Vision . . . . . . . . . . 9-46
Canadian Vehicle Owners . . . . . . . . iv
Capacities and Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 9-27
Trunk . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Winter Driving . . . . . . . . . . . . . . . . . 9-9
Cautions, Danger, and
Warnings . . . . . . . . . . . . . . . . . . . . . . . . .v