warning BUICK LACROSSE 2011 Owner's Manual

Black plate (20,1)Buick LaCrosse Owner Manual - 2011
10-20 Vehicle Care
{WARNING
An electric engine cooling fan
under the hood can start up
even when the engine is not
running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{WARNING
Steam and scalding liquids
from a hot cooling system can
blow out and burn you badly.
They are under pressure, and if
you turn the surge tank pressure
cap—even a little —they can
come out at high speed. Never
turn the cap when the cooling
system, including the surge tank
pressure cap, is hot. Wait for the
cooling system and surge tank
pressure cap to cool if you ever
have to turn the pressure cap.
The coolant surge tank pressure
cap can be removed when the
cooling system, including the
surge tank pressure cap and
upper radiator hose, is no
longer hot.
1. Turn the pressure cap slowly counterclockwise. If a hiss is
heard, wait for that to stop.
A hiss means there is still
some pressure left.
2. Then keep turning the cap and remove it.
3. Fill the coolant surge tank withthe proper mixture to the mark
pointed to on the front of the
coolant surge tank.

Black plate (21,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-21
4. With the coolant surge tank capoff, start the engine and let it
run until the upper radiator hose
starts getting hot. Watch out
for the engine cooling fan(s).
By this time, the coolant level
inside the coolant surge tank
may be lower. If the level is
lower, add more of the proper
mixture to the coolant surge
tank until the level reaches the
mark pointed to on the front of
the coolant surge tank.
5. Replace the cap. Be sure the cap is hand–tight and fully
seated.
Notice: If the pressure cap is
not tightly installed, coolant loss
and possible engine damage may
occur. Be sure the cap is properly
and tightly secured.
If coolant is needed, add the proper
DEX-COOL coolant mixture at the
coolant surge tank.Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There is a coolant temperature
gauge and a warning light on
the instrument panel cluster that
indicate an overheated engine
condition. See Engine Coolant
Temperature Gauge on page 5‑13
for more information.
You may decide not to lift the hood
when this warning appears, but
instead get service help right away.
See Roadside Assistance Program
(U.S. and Canada) on page 13‑8
or Roadside Assistance Program
(Mexico) on page 13‑10.
If you do decide to lift the hood,
make sure the vehicle is parked
on a level surface. Then check to see if the engine
cooling fans are running. If the
engine is overheating, the fan(s)
should be running. If not, do not
continue to run the engine and
have the vehicle serviced.
Notice:
Engine damage from
running the engine without
coolant is not covered by the
warranty.
If Steam is Coming from the
Engine Compartment
See Overheated Engine Protection
Operating Mode on page 10‑22 for
information on driving to a safe
place in an emergency.

Black plate (22,1)Buick LaCrosse Owner Manual - 2011
10-22 Vehicle Care
If No Steam is Coming from
the Engine Compartment
If an engine overheat warning is
displayed but no steam can be seen
or heard, the problem might not be
too serious. Sometimes the engine
can get a little too hot when the
vehicle:
.Climbs a long hill on a hot day
.Stops after high-speed driving
.Idles for long periods in traffic
.Tows a trailer
If the overheat warning displays with
no sign of steam:
1. Turn the air conditioning off.
2. Turn the heater on to the highest temperature and to the highest
fan speed. Open the windows
as necessary. 3. In heavy traffic, let the engine
idle in N (Neutral) while stopped.
If it is safe to do so, pull off
the road, shift to P (Park)
or N (Neutral) and let the
engine idle.
If the temperature overheat gauge
is no longer in the overheat zone
or an overheat warning no longer
displays, the vehicle can be driven.
Continue to drive the vehicle slowly
for about 10 minutes. Keep a safe
vehicle distance from the vehicle in
front. If the warning does not come
back on, continue to drive normally.
If the warning continues, pull
over, stop, and park the vehicle
right away.
If there is no sign of steam,
idle the engine for three minutes
while parked. If the warning is still
displayed, turn off the engine until it
cools down. Also, see Overheated
Engine Protection Operating Mode
on page 10‑22.
Overheated Engine
Protection
Operating Mode
This emergency operating mode
allows the vehicle to be driven
to a safe place in an emergency
situation. If an overheated engine
condition exists, an overheat
protection mode which alternates
firing groups of cylinders helps
prevent engine damage. In this
mode, there is significant loss in
power and engine performance.
The engine coolant temperature
warning light comes on the
instrument panel, to indicate the
vehicle has entered overheated
engine protection operating mode.
The temperature gauge also
indicates an overheat condition
exists. Driving extended km (mi)
and/or towing a trailer in the
overheat protection mode should
be avoided.

Black plate (24,1)Buick LaCrosse Owner Manual - 2011
10-24 Vehicle Care
Washer Fluid
What to Use
When windshield washer fluid
is needed, be sure to read the
manufacturer instructions before
use. If operating the vehicle in an
area where the temperature can
fall below freezing, use a fluid that
has sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the washer
symbol on it. Add washer fluid
until the tank is full. SeeEngine
Compartment Overview on
page 10‑6 for reservoir location. Notice:
.When using concentrated
washer fluid, follow the
manufacturer's instructions
for adding water.
.Do not mix water with
ready-to-use washer fluid.
Water can cause the solution
to freeze and damage the
washer fluid tank and other
parts of the washer system.
Also, water does not clean
as well as washer fluid.
.Fill the washer fluid tank
only three-quarters full when
it is very cold. This allows
for fluid expansion if
freezing occurs, which
could damage the tank if
it is completely full.
.Do not use engine coolant
(antifreeze) in the windshield
washer. It can damage the
windshield washer system
and paint.
Brakes
This vehicle has disc brakes.
Disc brake pads have built-in wear
indicators that make a high-pitched
warning sound when the brake pads
are worn and new pads are needed.
The sound can come and go or be
heard all the time the vehicle is
moving, except when applying the
brake pedal firmly.
{WARNING
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
a crash. When the brake wear
warning sound is heard, have the
vehicle serviced.
Notice: Continuing to drive with
worn-out brake pads could result
in costly brake repair.

Black plate (26,1)Buick LaCrosse Owner Manual - 2011
10-26 Vehicle Care
Do not top off the brake fluid.
Adding fluid does not correct a
leak. If fluid is added when the
linings are worn, there will be too
much fluid when new brake linings
are installed. Add or remove brake
fluid, as necessary, only when work
is done on the brake hydraulic
system.
{WARNING
If too much brake fluid is added,
it can spill on the engine
and burn, if the engine is hot
enough. You or others could be
burned, and the vehicle could be
damaged. Add brake fluid only
when work is done on the brake
hydraulic system.
When the brake fluid falls to a low
level, the brake warning light comes
on. See Brake System Warning
Light on page 5‑19. What to Add
Use only new DOT 3 brake
fluid from a sealed container.
See
Recommended Fluids and
Lubricants on page 11‑7.
Always clean the brake fluid
reservoir cap and the area
around the cap before removing it.
This helps keep dirt from entering
the reservoir.{WARNING
With the wrong kind of fluid in
the brake hydraulic system,
the brakes might not work well.
This could cause a crash. Always
use the proper brake fluid. Notice:
.Using the wrong fluid
can badly damage brake
hydraulic system parts.
For example, just a few
drops of mineral-based oil,
such as engine oil, in the
brake hydraulic system can
damage brake hydraulic
system parts so badly that
they will have to be replaced.
Do not let someone put in
the wrong kind of fluid.
.If brake fluid is spilled
on the vehicle's painted
surfaces, the paint finish
can be damaged. Be careful
not to spill brake fluid on the
vehicle. If you do, wash it off
immediately.

Black plate (27,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-27
Battery
Refer to the replacement number
on the original battery label when a
new battery is needed.
{DANGER
Battery posts, terminals, and
related accessories contain lead
and lead compounds, chemicals
known to the State of California
to cause cancer and reproductive
harm. Wash hands after handling.
If the battery has a very low charge
or is dead, it might not be possible
to remove the ignition key from
the ignition switch or shift out of
P (Park). See Shifting Out of Park
on page 9‑26.
Vehicle Storage
{WARNING
Batteries have acid that can burn
you and gas that can explode.
You can be badly hurt if you are
not careful. See Jump Starting on
page 10‑86 for tips on working
around a battery without
getting hurt.
Infrequent Usage: Remove the
black, negative (−) cable from the
battery to keep the battery from
running down.
Extended Storage: Remove the
black, negative (−) cable from the
battery or use a battery trickle
charger.
Starter Switch Check
{WARNING
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle.
2. Firmly apply both the parking brake and the regular brake.
See Parking Brake on
page 9‑33.
Do not use the accelerator
pedal, and be ready to turn
off the engine immediately
if it starts.

Black plate (28,1)Buick LaCrosse Owner Manual - 2011
10-28 Vehicle Care
3. Try to start the engine in eachgear. The vehicle should start
only in P (Park) or N (Neutral).
If the vehicle starts in any other
position, contact your dealer for
service.
Automatic Transmission
Shift Lock Control
Function Check
{WARNING
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. It should
be parked on a level surface. 2. Firmly apply the parking
brake. See Parking Brake on
page 9‑33.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the engine off, turn the ignition on, but do not start the
engine. Without applying the
regular brake, try to move the
shift lever out of P (Park) with
normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.
Ignition Transmission
Lock Check
While parked, and with the parking
brake set, try to turn the ignition
to LOCK/OFF in each shift lever
position.
.The ignition should turn to
LOCK/OFF only when the
shift lever is in P (Park).
.With the key access ignition
system, the ignition key should
come out only in LOCK/OFF.
See Ignition Positions (Key
Access) on page 9‑17 orIgnition
Positions (Keyless Access) on
page 9‑19.
Contact your dealer if service is
required.

Black plate (29,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-29
Park Brake and P (Park)
Mechanism Check
{WARNING
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle 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.
.To check the parking brake's
holding ability: With the engine
running and the transmission in
N (Neutral), slowly remove foot
pressure from the regular brake
pedal. Do this until the vehicle is
held by the parking brake only.
.To check the P (Park)
mechanism's holding ability:
With the engine running, shift
to P (Park). Then release the
parking brake followed by the
regular brake.
Contact your dealer if service is
required.
Wiper Blade Replacement
Windshield wiper blades should be
inspected for wear and cracking.
See Scheduled Maintenance on
page 11‑2 for more information.
Replacement blades come in
different types and are removed
in different ways. For proper type
and length, see Maintenance
Replacement Parts on page 11‑9.
To replace the windshield wiper
blade:
1. Pull the windshield wiper assembly away from the
windshield.

Black plate (33,1)Buick LaCrosse Owner Manual - 2011
Vehicle Care 10-33
9. Make sure that the lightfrom the headlamp is positioned
at the bottom edge of the
horizontal tape line. The lamp
on the left (A) shows the correct
headlamp aim. The lamp on
the right (B) shows the incorrect
headlamp aim.
10. Repeat Steps 7 through 9 for the opposite headlamp.
Bulb Replacement
For the proper type of replacement
bulbs, see Replacement Bulbs on
page 10‑37.
For any bulb changing procedure
not listed in this section, contact
your dealer.
Halogen Bulbs
{WARNING
Halogen bulbs have pressurized
gas inside and can burst if you
drop or scratch the bulb. You or
others could be injured. Be sure
to read and follow the instructions
on the bulb package.
High Intensity Discharge
(HID) Lighting
{WARNING
The low beam high intensity
discharge lighting system
operates at a very high voltage.
If you try to service any of the
system components, you could
be seriously injured. Have your
dealer or a qualified technician
service them.
After an HID headlamp bulb has
been replaced, the beam might be
a slightly different shade than it was
originally. This is normal.

Black plate (46,1)Buick LaCrosse Owner Manual - 2011
10-46 Vehicle Care
Mini Fuses Usage31 Electronic
Suspension Control
32 Rear Seat
Infotainment
33 All‐Wheel Drive
J‐Case Fuses Usage
1 Not Used
2 Not Used
3 Not Used
4 Not Used
9 Not Used
10 Not Used
11 Not Used J‐Case
Fuses Usage
13 Not Used
14 Not Used
34 Not Used
35 PEPS
36 Not Used
37 Not Used
Relays Usage
K1 Not Used
K2 Seat Ventilation,
Sunshade
K3 Heated Steering
Wheel
K4 Not UsedWheels and Tires
Tires
Every new GM vehicle has
high-quality tires made by
a leading tire manufacturer.
See the warranty manual
for information regarding
the tire warranty and where
to get service. For additional
information refer to the tire
manufacturer.
{WARNING
.Poorly maintained and
improperly used tires are
dangerous.
.Overloading the tires can
cause overheating as a
result of too much flexing.
There could be a blowout and
a serious crash. See Vehicle
Load Limits on page 9‑12.
(Continued)