panel BUICK LUCERNE 2009 Service Manual

SERVICE STABILITRAK
If your vehicle has StabiliTrak®, this message displays
if there has been a problem detected with StabiliTrak.
A warning light also appears on the instrument panel
cluster. SeeTraction Control System (TCS) Warning
Light on page 3-40. SeeStabiliTrak
®System on page 4-6
for more information.
If this message turns 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 and
then back on. If this message still stays on or turns back
on again while you are driving, your vehicle needs
service. Have the StabiliTrak System inspected by
your dealer/retailer as soon as possible.
SERVICE SUSPENSION SYSTEM
This message displays to indicate that the suspension
system is not operating properly. See your dealer/retailer
for service.
SERVICE THEFT SYSTEM
This message displays when there is a problem with
the theft-deterrent system programmed in the key. A fault
has been detected in the system which means that the
system is disabled and it is not protecting the vehicle.
The vehicle usually restarts; however, you may want to
take the vehicle to your dealer/retailer before turning off
the engine. SeePASS-Key
®III+ Electronic Immobilizer
on page 2-18for more information.
SERVICE TIRE MONITOR SYSTEM
On vehicles with the Tire Pressure Monitor System
(TPMS), this message displays if a part on the TPMS is
not working properly. The tire pressure light also ashes
and then remains on during the same ignition cycle.
SeeTire Pressure Light on page 3-43. Several conditions
may cause this message to appear. SeeTire Pressure
Monitor Operation on page 5-69for more information.
If the warning comes on and stays on, there may be
a problem with the TPMS. See your dealer/retailer.
SERVICE TRACTION CONTROL
This message displays when the Traction Control
System (TCS) is not functioning properly. A warning
light also appears on the instrument panel cluster.
SeeTraction Control System (TCS) Warning Light
on page 3-40. SeeTraction Control System (TCS) on
page 4-7for more information. Have the TCS serviced
by your dealer/retailer as soon as possible.
SERVICE TRANSMISSION
This message displays when there is a problem with the
transmission. See your dealer/retailer for service.
SERVICE VEHICLE SOON
This message displays when a non-emissions related
malfunction occurs. Have the vehicle serviced by
your dealer/retailer as soon as possible.
3-63

SIDE BLIND ZONE ALERT
SYSTEM OFF
If your vehicle has the Side Blind Zone Alert (SBZA)
system, this message displays when the SBZA system
has been turned off. SeeSide Blind Zone Alert (SBZA) on
page 2-40andDIC Operation and Displays on page 3-49
for more information.
SIDE BLIND ZONE SYS. UNAVAILABLE
If your vehicle has the Side Blind Zone Alert (SBZA)
system, this message displays when the SBZA system
is disabled because the sensor is blocked and cannot
detect vehicles in your blind zone. The sensor may be
blocked by mud, dirt, snow, ice, or slush. This message
may also display during heavy rain or due to road spray.
It may also come on when driving in isolated areas with
no guardrails, trees, or road signs and light traffic. Your
vehicle does not need service. For cleaning instructions,
seeWashing Your Vehicle on page 5-96. SeeSide Blind
Zone Alert (SBZA) on page 2-40for more information.
SPEED LIMITED TO XXX MPH (km/h)
This message displays when your vehicle speed is
limited to 80 mph (128 km/h) because the vehicle detects
a problem in the speed variable assist steering, magnetic
ride control, or automatic leveling control systems. Have
your vehicle serviced by your dealer/retailer.
STABILITRAK NOT READY
If your vehicle has StabiliTrak, this message may
display and the Traction Control System and StabiliTrak
Warning Light on the instrument panel cluster may be
on after rst driving the vehicle and exceeding 19 mph
(30 km/h) for 30 seconds. The StabiliTrak system is not
functional until the light has turned off. SeeStabiliTrak
®
System on page 4-6for more information.
STARTING DISABLED SERVICE
THROTTLE
This message displays if the starting of the engine is
disabled due to the electronic throttle control system.
Have your vehicle serviced by your dealer/retailer
immediately.
This message only appears while the ignition is in
ON/RUN, and will not disappear until the problem is
resolved.
This message cannot be acknowledged.
THEFT ATTEMPTED
This message displays if the content theft-deterrent
system has detected a break-in attempt while you were
away from your vehicle. SeeContent Theft-Deterrent
on page 2-17for more information.
3-64

TIGHTEN GAS CAP
This message may be displayed if the gas cap is not
on, or is not fully tightened. Check the gas cap to ensure
that it is on properly. SeeFilling the Tank on page 5-10
for more information.
TIRE LEARNING ACTIVE
On vehicles with the Tire Pressure Monitor System
(TPMS), this message displays when the TPMS is
re-learning the tire positions on your vehicle. The tire
positions must be re-learned after rotating the tires or
after replacing a tire or sensor. SeeTire Inspection and
Rotation on page 5-72,Tire Pressure Monitor System on
page 5-67, andInflation - Tire Pressure on page 5-66for
more information.
TRACTION CONTROL OFF
This message displays when the Traction Control
System (TCS) is turned off. Adjust your driving
accordingly. SeeTraction Control System (TCS)
on page 4-7for more information.
TRACTION CONTROL ON
This message displays when the Traction Control
System (TCS) is turned on. SeeTraction Control
System (TCS) on page 4-7for more information.
TRANSMISSION HOT IDLE ENGINE
Notice:If you drive your vehicle while the
transmission uid is overheating and the
transmission temperature warning is displayed
on the instrument panel cluster and/or DIC, you
can damage the transmission. This could lead to
costly repairs that would not be covered by your
warranty. Do not drive your vehicle with overheated
transmission uid or while the transmission
temperature warning is displayed.
This message displays when the transmission uid
in your vehicle is too hot. Stop the vehicle and allow
it to idle until it cools down. If the warning message
continues to display, have the vehicle serviced by
your dealer/retailer as soon as possible.
TRUNK OPEN
This message displays when the trunk is not closed
completely. Make sure that the trunk is closed
completely. SeeTrunk on page 2-13.
3-65

Braking in Emergencies
ABS allows the driver to steer and brake at the same
time. In many emergencies, steering can help more than
even the very best braking.
Brake Assist
This vehicle has a Brake Assist feature designed to
assist the driver in stopping or decreasing vehicle speed
in emergency driving conditions. This feature uses the
stability system hydraulic brake control module to
supplement the power brake system under conditions
where the driver has quickly and forcefully applied the
brake pedal in an attempt to quickly stop or slow down
the vehicle. The stability system hydraulic brake control
module increases brake pressure at each corner of the
vehicle until the ABS activates. Minor brake pedal
pulsations or pedal movement during this time is normal
and the driver should continue to apply the brake pedal
as the driving situation dictates The Brake Assist feature
will automatically disengage when the brake pedal is
released or brake pedal pressure is quickly decreased.
StabiliTrak®System
The vehicle may have the StabiliTrak system which
combines antilock brake, traction and stability control
systems and helps the driver maintain directional
control of the vehicle in most driving conditions. This
is accomplished by selectively applying any one of the
vehicle’s brakes and reducing engine power.
The StabiliTrak system comes on automatically whenever
the vehicle is started. The system cannot be turned off.
This light will ash when
the system is operating.
The STABILITRAK NOT READY message may be
displayed in the Driver Information Center (DIC) and the
Traction Control System (TCS)/StabiliTrak warning light
on the instrument panel cluster comes on after rst
driving the vehicle and exceeding 19 mph (30 km/h) for
30 seconds. The StabiliTrak system is off until the light
has turned off. This could take up to 15 minutes.
4-6

The TCS/StabiliTrak warning light on the instrument
panel cluster will ash when the system is operating.
SeeTraction Control System (TCS) Warning Light
on page 3-40andStabiliTrak
®Indicator Light on
page 3-41for more information. The system may be
heard or felt while it is working. This is normal.
The SERVICE STABILITRAK message is displayed and
the TCS/StabiliTrak warning light on the instrument panel
cluster comes on if there is a problem with the system.
When this light and the SERVICE STABILITRAK
message are on, the system is not working. Adjust
your driving accordingly.
Traction Control System (TCS)
The vehicle has a Traction Control System (TCS) that
limits wheel spin. This is especially useful in slippery road
conditions. The system operates only if it senses that the
front wheels are spinning too much or beginning to lose
traction. When this happens, the system works the front
brakes and reduces engine power (by closing the throttle
and managing engine spark) to limit wheel spin.The TCS and StabiliTrak
®
light will ash when the
system is limiting
wheel spin.
The system may be heard or felt while it is working, but
this is normal. SeeTraction Control System (TCS)
Warning Light on page 3-40for more information.
If the vehicle is in cruise control when TCS begins to
limit wheel spin, the cruise control will automatically
disengage. The cruise control may be re-engaged when
road conditions allow. SeeCruise Control on page 3-12.
The SERVICE TRACTION CONTROL message in
the DIC and the TCS/StabiliTrak warning light comes on
if there is a problem with the traction control system.
SeeDIC Warnings and Messages on page 3-56.
When this light and the SERVICE TRACTION
CONTROL message are on, the system will not limit
wheel spin. Adjust your driving accordingly.
4-7

Blizzard Conditions
Being stuck in snow can be in a serious situation. Stay
with the vehicle unless there is help nearby. If possible,
use theRoadside Assistance Program on page 7-7.
To get help and keep everyone in the vehicle safe:
Turn on theHazard Warning Flashers on page 3-6.
Tie a red cloth to an outside mirror.
{CAUTION:
Snow can trap engine exhaust under the vehicle.
This may cause exhaust gases to get inside.
Engine exhaust contains carbon monoxide (CO)
which cannot be seen or smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in the snow:
Clear away snow from around the base of
your vehicle, especially any that is blocking
the exhaust pipe.
Check again from time to time to be sure
snow does not collect there.
CAUTION: (Continued)
CAUTION: (Continued)

Open a window about two inches (5 cm) on
the side of the vehicle that is away from the
wind to bring in fresh air.
Fully open the air outlets on or under the
instrument panel.
Adjust the Climate Control system to a setting
that circulates the air inside the vehicle and
set the fan speed to the highest setting.
See Climate Control System in the Index.
For more information about carbon monoxide, see
Engine Exhaust on page 2-32.
Snow can trap exhaust gases under your vehicle.
This can cause deadly CO (carbon monoxide) gas
to get inside. CO could overcome you and kill you.
You cannot see it or smell it, so you might not
know it is in your vehicle. Clear away snow from
around the base of your vehicle, especially any
that is blocking the exhaust.
Run the engine for short periods only as needed to
keep warm, but be careful.
To save fuel, run the engine for only short periods as
needed to warm the vehicle and then shut the engine off
and close the window most of the way to save heat.
4-16

Turn Signals When Towing a Trailer
The arrows on the instrument panel ash whenever
signaling a turn or lane change. Properly hooked up, the
trailer lamps also ash, telling other drivers the vehicle
is turning, changing lanes or stopping.
When towing a trailer, the arrows on the instrument
panel ash for turns even if the bulbs on the trailer
are burned out. For this reason you may think other
drivers are seeing the signal when they are not.
It is important to check occasionally to be sure the
trailer bulbs are still working.
Driving on Grades
Notice:Do not tow on steep continuous grades
exceeding 6 miles (9.6 km). Extended, higher than
normal engine and transmission temperatures may
result and damage the vehicle. Frequent stops are
very important to allow the engine and transmission
to cool.
Reduce speed and shift to a lower gearbeforestarting
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.
On a long uphill grade, shift down and reduce the
vehicle’s speed to around 45 mph (70 km/h) to reduce
the possibility of the engine and the transmission
overheating. If the engine does overheat, see
Engine Overheating on page 5-35.
Parking on Hills
{CAUTION:
Parking the vehicle on a hill with the trailer
attached can be dangerous. If something goes
wrong, the rig could start to move. People can be
injured, and both the vehicle and the trailer can be
damaged. When possible, always park the rig on a
at surface.
If parking the rig on a hill:
1. Press the brake pedal, but do not shift into P (Park)
yet. Turn the wheels into the curb if facing downhill
or into traffic if facing uphill.
2. Have someone place chocks under the trailer
wheels.
3. When the wheel chocks are in place, release the
brake pedal until the chocks absorb the load.
4. Reapply the brake pedal. Then apply the parking
brake and shift the transmission into P (Park).
5. Release the brake pedal.
4-30

Tire Inspection and Rotation...........................5-72
When It Is Time for New Tires.......................5-73
Buying New Tires.........................................5-74
Different Size Tires and Wheels......................5-76
Uniform Tire Quality Grading..........................5-76
Wheel Alignment and Tire Balance..................5-78
Wheel Replacement......................................5-79
Tire Chains..................................................5-80
If a Tire Goes Flat........................................5-81
Changing a Flat Tire.....................................5-82
Removing the Spare Tire and Tools................5-83
Removing the Flat Tire and Installing the
Spare Tire................................................5-84
Storing a Flat or Spare Tire and Tools............5-89
Compact Spare Tire......................................5-91
Appearance Care............................................5-92
Interior Cleaning...........................................5-92
Fabric/Carpet...............................................5-93
Leather.......................................................5-94
Instrument Panel, Vinyl, and Other
Plastic Surfaces........................................5-95
Care of Safety Belts......................................5-95Weatherstrips...............................................5-95
Washing Your Vehicle...................................5-96
Cleaning Exterior Lamps/Lenses.....................5-96
Finish Care..................................................5-96
Windshield and Wiper Blades.........................5-97
Aluminum or Chrome-Plated Wheels and Trim . . .5-98
Tires...........................................................5-99
Sheet Metal Damage.....................................5-99
Finish Damage.............................................5-99
Underbody Maintenance................................5-99
Chemical Paint Spotting.................................5-99
Vehicle Identication.....................................5-100
Vehicle Identication Number (VIN)................5-100
Service Parts Identication Label...................5-100
Electrical System..........................................5-100
Add-On Electrical Equipment.........................5-100
Power Windows and Other Power Options......5-101
Fuses and Circuit Breakers..........................5-101
Underhood Fuse Block................................5-101
Rear Underseat Fuse Block..........................5-104
Capacities and Specications........................5-109
Section 5 Service and Appearance Care
5-2

This vehicle has an airbag system. Before attempting
to do your own service work, seeServicing Your
Airbag-Equipped Vehicle on page 1-72.
Keep a record with all parts receipts and list the
mileage and the date of any service work performed.
SeeMaintenance Record on page 6-15.
Adding Equipment to the Outside of
the Vehicle
Things added to the outside of the vehicle can affect the
airow around it. This can cause wind noise and can
affect fuel economy and windshield washer performance.
Check with your dealer/retailer before adding equipment
to the outside of the vehicle.
Fuel
Use of the recommended fuel is an important part of the
proper maintenance of this vehicle. To help keep the
engine clean and maintain optimum vehicle performance,
we recommend the use of gasoline advertised as TOP
TIER Detergent Gasoline.
The 8th digit of the Vehicle Identication Number (VIN)
shows the code letter or number that identies the
vehicle’s engine. The VIN is at the top left of the
instrument panel. SeeVehicle Identification Number
(VIN) on page 5-100.
If the vehicle has the 3.9L V6 engine (VIN Code M),
you can use either unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85). SeeFuel E85
(85% Ethanol) on page 5-8. In all other engines, use only
the unleaded gasoline described underGasoline Octane
on page 5-6.
5-5

Fuel E85 (85% Ethanol)
The 8th digit of the Vehicle Identication Number (VIN)
shows the code letter or number that identies the
vehicle’s engine. The VIN is at the top left of the
instrument panel. SeeVehicle Identification Number
(VIN) on page 5-100.
If the vehicle has the 3.9L V6 engine (VIN Code M),
you can use either unleaded gasoline or ethanol
fuel containing up to 85% ethanol (E85). SeeFuel on
page 5-5. In all other engines, use only the unleaded
gasoline described underGasoline Octane on page 5-6.
Only vehicles that have the 3.9L V6 engine
(VIN Code M) can use 85% ethanol fuel (E85).
We encourage the use of E85 in vehicles that are
designed to use it. The ethanol in E85 is a “renewable”
fuel, meaning it is made from renewable sources such
as corn and other crops.Many service stations will not have an 85% ethanol fuel
(E85) pump available. The U. S. Department of Energy
has an alternative fuels website (www.eere.energy.gov/
afdc/infrastructure/locator.html) that can help you nd
E85 fuel. Those stations that do have E85 should have a
label indicating ethanol content. Do not use the fuel if the
ethanol content is greater than 85%.
At a minimum, E85 should meet ASTM Specication
D 5798. By denition, this means that fuel labeled E85
will have an ethanol content between 70% and 85%.
Filling the fuel tank with fuel mixtures that do not meet
ASTM specications can affect driveability and could
cause the malfunction indicator lamp to come on.
5-8