2006 BUICK LACROSSE engine

Sensors
The solar sensor on the vehicle monitors the solar
heat and the air inside of the vehicle. This information is
used to maintain the selected temperature by initiating
needed adjustments to the temperature, the fan speed,
and the air delivery system. The system may also supply
cooler air to the side of the vehicle facing the sun. The
recirculation mode will also be activated, as necessary.
Do not cover the solar sensor located in the center of the
instrument panel, near the windshield, or the system will
not work properly.
Rear Window Defogger
The rear window defogger uses a warming grid to
remove fog or frost from the rear window. The rear
window defogger will only work when the engine
is running.
=(Rear Window Defogger):Press this button to
turn the rear window defogger on and off. Be sure
to clear as much snow from the rear window as possible.
The rear window defogger will turn off approximately
20 minutes after the button is pressed. If turned on again,
the defogger will only run for approximately 20 minutes
before turning off. The defogger can also be turned off by
pressing the button again or by turning off the engine.
Do not drive the vehicle until all the windows are clear.Notice:Do not use a razor blade or sharp object to
clear the inside rear window. Do not adhere anything
to the defogger grid lines in the rear glass. These
actions may damage the rear defogger. Repairs
would not be covered by your warranty.
Outlet Adjustment
Use the thumbwheels located between the center
outlets to open and close the outlets. Move the lever in
the center of each air outlet to adjust the direction of
the airow.
Operation Tips
Clear away any ice, snow or leaves from the air inlets
at the base of the windshield that may block the ow
of air into the vehicle.
Use of non-GM approved hood deectors may
adversely affect the performance of the system.
Keep the path under the front seats clear of objects
to help circulate the air inside of the vehicle more
effectively.
If the vehicle has a passenger compartment air lter
and the airow seems low when the fan is at the
highest setting it may need to be replaced. For more
information, seePassenger Compartment Air Filter
on page 3-30.
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Passenger Compartment Air Filter
The passenger compartment air lter is located
below the air inlet grille, near the passenger’s side
windshield wiper arm. SeeEngine Compartment
Overview on page 5-12.
The lter traps most of the pollen from the air entering
the air conditioning module. Like the engine’s air
cleaner lter, it may need to be changed periodically.
For information on how often to change the passenger
compartment air lter, seeScheduled Maintenance
on page 6-4.
To change the passenger compartment air lter, use the
following steps:
1. Turn the ignition to ACCESSORY and turn the
windshield wipers on.
2. Turn the ignition to OFF when the windshield
wipers are in the upright position.
3. Raise the hood.
4. Disconnect the windshield washer pump hose from
the fender rail and air inlet grille.
5. Peel back the hood weather-strip from the
passenger’s side of the vehicle halfway to the center
of the hood.6. Remove the three air inlet grille retainers.
7. Remove the air inlet grille.
8. Remove the old
air lter by pulling
up on its tab.
9. Install a new passenger compartment air lter.
SeeNormal Maintenance Replacement Parts on
page 6-13for the type of lter to use. Make sure it
slides under the compartment retainers.
10. Reverse Steps 1 through 7.
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Steering Wheel Climate Controls
If your vehicle has this
feature, you can control
the driver’s temperature
setting by using the
control located on your
steering wheel.
yz(Temperature):Press the up arrow to increase
or the down arrow decrease the temperature inside
your vehicle.
Warning Lights, Gages, and
Indicators
This part describes the warning lights and gages that may
be on the vehicle. The pictures will help you locate them.
Warning lights and gages can signal that something is
wrong before it becomes serious enough to cause an
expensive repair or replacement. Paying attention to the
warning lights and gages could also save you or others
from injury.
Warning lights come on when there may be or is a
problem with one of the vehicle’s functions. As you will
see in the details on the next few pages, some warning
lights come on briey when you start the engine just to let
you know they are working. If you are familiar with this
section, you should not be alarmed when this happens.
Gages can indicate when there may be or is a problem
with one of your vehicle’s functions. Often gages and
warning lights work together to let you know when there
is a problem with your vehicle.
When one of the warning lights comes on and stays
on when you are driving, or when one of the gages
shows there may be a problem, check the section that
tells you what to do about it. Please follow this manual’s
advice. Waiting to do repairs can be costly – and even
dangerous. So please get to know the warning lights and
gages. They are a big help.
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Speedometer and Odometer
Your speedometer lets you see your speed in both
miles per hour (mph) and kilometers per hour (km/h).
Your vehicle’s odometer works together with the
driver information center. You can set a Trip A and
Trip B odometer. See “Trip Information” underDIC
Operation and Displays on page 3-51.
The odometer mileage can be checked without the
vehicle running. Simply press the odometer/trip switch
on the instrument panel cluster.
If your vehicle ever needs a new odometer installed, the
new one will be set to the correct mileage total of the old
odometer.
Tachometer
The tachometer displays
the engine speed in
thousands of revolutions
per minute (rpm).
Safety Belt Reminder Light
When the key is turned to RUN or START, a chime
will sound for several seconds to remind you and your
passengers to buckle your safety belts. The driver
safety belt light will also come on and stay on for several
seconds, then it will ash for several more. You should
buckle your seat belt.
If the driver’s belt is
buckled, neither the chime
nor the light will come on.
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Anti-Lock Brake System
Warning Light
Your vehicle may have the
anti-lock brake system, this
light will come on when
your engine is started and
may stay on for several
seconds. That is normal.
If the ABS warning light comes on and stays on, there
may be a problem with the anti-lock portion of the brake
system. If the brake system warning light is not on, you
still have brakes, but you do not have anti-lock brakes.
SeeBrake System Warning Light on page 3-38.If the light stays on, turn the ignition to OFF. If the light
comes on when you are driving, stop as soon as possible
and turn the ignition off. Then start the engine again to
reset the system. If the light still stays on, or comes on
again while you are driving, your vehicle needs service.
If the regular brake system warning light is not on, you
still have brakes, but you do not have anti-lock brakes.
If the regular brake system warning light is also on, you
do not have anti-lock brakes and there is a problem with
your regular brakes. SeeBrake System Warning Light on
page 3-38.
The anti-lock brake system warning light should come on
briey when you turn the ignition key to RUN. If the light
does not come on then, have it xed so it will be ready to
warn you if there is a problem.
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Traction Control System (TCS)
Warning Light
Your vehicle may be
equipped with the Traction
Control System (TCS), if
this warning light comes
on and stays on, there
may be a problem with the
TCS and, if equipped, the
StabiliTrak
®system.
The TCS warning light will come on briey when you turn
the ignition to RUN. If it does not come on then, have it
xed so it will be ready to warn you if there is a problem.
The light will also come on if you turn the TCS off using
the TCS on/off button located near the shift lever.
If the TCS warning light stays on or comes on while
you are driving, pull off the road as soon as possible and
stop carefully. Try resetting the system by turning the
ignition off then back on. If the light still stays on
or comes back on again while you are driving, your
vehicle needs service. Have the traction control system
and, if equipped, the StabiliTrak
®system inspected
as soon as possible. SeeTraction Control System (TCS)
on page 4-10andStabiliTrak
®System on page 4-11
for more information.
Engine Coolant Temperature
Warning Light
This light tells you that
your engine is very hot.
This light will come on when you rst start the vehicle as
a check to let you know that the light is working. It will go
out after a few seconds. If the light does not come on, the
bulb may be burned out. See your GM dealer to have it
corrected.
If the light does not go out or if the light comes on and
stays on while you are driving, your vehicle may have a
problem with the cooling system. You should stop the
vehicle and turn off the engine as soon as possible to
avoid damage to the engine. A warning chime will sound
when this light is on, also.
SeeEngine Overheating on page 5-27.
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Engine Coolant Temperature Gage
The vehicle has a gage
that shows the engine
coolant temperature.
If the gage pointer moves towards the H, the engine is
too hot.
This reading indicates the same thing as the warning
light. It means that the engine coolant has overheated.
If the vehicle has been operating under normal driving
conditions, pull off the road, stop the vehicle, and turn off
the engine as soon as possible. SeeEngine Overheating
on page 5-27.
Low Coolant Warning Light
If equipped, this light
comes on briey when
you turn your ignition on
as a bulb check only.
Malfunction Indicator Lamp
Check Engine Light
Your vehicle has a
computer which monitors
operation of the fuel,
ignition, and emission
control systems.
This system is called OBD II (On-Board
Diagnostics-Second Generation) and is intended to
assure that emissions are at acceptable levels for the life
of the vehicle, helping to produce a cleaner environment.
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The check engine light comes on to indicate that there
is a problem and service is required. Malfunctions often
will be indicated by the system before any problem is
apparent. This may prevent more serious damage to your
vehicle. This system is also designed to assist your
service technician in correctly diagnosing any
malfunction.
Notice:If you keep driving your vehicle with this
light on, after awhile, your emission controls may not
work as well, your fuel economy may not be as good,
and your engine may not run as smoothly. This could
lead to costly repairs that may not be covered by
your warranty.
Notice:Modications made to the engine,
transaxle, exhaust, intake, or fuel system of your
vehicle or the replacement of the original tires with
other than those of the same Tire Performance
Criteria (TPC) can affect your vehicle’s emission
controls and may cause this light to come on.
Modications to these systems could lead to costly
repairs not covered by your warranty. This may
also result in a failure to pass a required Emission
Inspection/Maintenance test. SeeAccessories
and Modifications on page 5-3.This light should come on, as a check to show you it
is working, when the ignition is on and the engine is not
running. If the light does not come on, have it repaired.
This light will also come on during a malfunction in
one of two ways:
Light Flashing— A misre condition has been
detected. A misre increases vehicle emissions
and may damage the emission control system
on your vehicle. Diagnosis and service may
be required.
Light On Steady— An emission control system
malfunction has been detected on your vehicle.
Diagnosis and service may be required.
If the Light is Flashing
The following may prevent more serious damage to
your vehicle:
Reducing vehicle speed
Avoiding hard accelerations
Avoiding steep uphill grades
If you are towing a trailer, reduce the amount of
cargo being hauled as soon as it is possible
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