2010 BUICK LUCERNE service schedule

Restraint System Check
Checking the Restraint Systems
Safety Belts
Now and then, check that the safety belt reminder light,
safety belts, buckles, latch plates, retractors, and
anchorages are all working properly.
Look for any other loose or damaged safety belt system
parts that might keep a safety belt system from doing its
job. See your dealer to have it repaired. Torn or frayed
safety belts may not protect you in a crash. They can rip
apart under impact forces. If a belt is torn or frayed, get
a new one right away.
Make sure the safety belt reminder light is working.
SeeSafety Belt Reminders
on page 4‑32for more
information.
Keep safety belts clean and dry. See Care of Safety
Belts
on page 6‑104.
Airbags
The airbag system does not need regularly scheduled
maintenance or replacement. Make sure the airbag
readiness light is working. See Airbag Readiness Light
on page 4‑33for more information.
Notice: If an airbag covering is damaged, opened,
or broken, the airbag may not work properly. Do not
open or break the airbag coverings. If there are any
opened or broken airbag covers, have the airbag
covering and/or airbag module replaced. For the
location of the airbag modules, see What Makes an
Airbag Inflate?
on page 2‑64. See your dealer for
service.
2-74

Emissions Inspection and Maintenance
Programs
Some state/provincial and local governments have
or might begin programs to inspect the emission
control equipment on the vehicle. Failure to pass this
inspection could prevent getting a vehicle registration.
Here are some things to know to help the vehicle pass
an inspection:
.The vehicle will not pass this inspection if the
check engine light is on with the engine running,
or if the key is in ON/RUN and the light is not on.
.The vehicle will not pass this inspection if the
OBD II (on-board diagnostic) system determines
that critical emission control systems have not
been completely diagnosed by the system. The
vehicle would be considered not ready for
inspection. This can happen if the battery has
recently been replaced or if the battery has run
down. The diagnostic system is designed to
evaluate critical emission control systems during
normal driving. This can take several days of
routine driving. If this has been done and the
vehicle still does not pass the inspection for lack of
OBD II system readiness, your dealer can prepare
the vehicle for inspection.
Oil Pressure Light
{WARNING:
Do not keep driving if the oil pressure is low. The
engine can become so hot that it catches fire.
Someone could be burned. Check the oil as soon
as possible and have the vehicle serviced.
Notice: Lack of proper engine oil maintenance can
damage the engine. The repairs would not be
covered by the vehicle warranty. Always follow the
maintenance schedule in this manual for changing
engine oil.
This light comes on briefly while starting the engine. If it
does not, have the vehicle serviced by your dealer.
If the system is working normally the indicator light then
goes off.
4-44

DIC Warnings and Messages
Messages are displayed on the DIC to notify the driver
that the status of the vehicle has changed and that
some action may be needed by the driver to correct the
condition. Multiple messages may appear one after
another. Some messages may not require immediate
action, but you can press the set/reset button to
acknowledge that you received the message and clear
it from the DIC display. Pressing any of the DIC buttons
also acknowledges and clears any messages. Some
messages cannot be cleared from the DIC display
because they are more urgent. These messages require
action before they can be cleared. You should take any
messages that appear on the display seriously and
remember that clearing the messages will only make
the messages disappear, not correct the problem. The
following are the possible messages that can be
displayed and some information about them.
AUTOMATIC LIGHT CONTROL OFF
This message displays when the automatic headlamps
are turned off. SeeExterior Lampson page 4‑12for
more information.
AUTOMATIC LIGHT CONTROL ON
This message displays when the automatic headlamps
are turned on. See Exterior Lampson page 4‑12for
more information.
BATTERY SAVER ACTIVE
This message displays when the system detects that
the battery voltage is dropping beyond a reasonable
level. The battery saver system starts reducing certain
features of the vehicle that you may be able to notice.
At the point that the features are disabled, this message
is displayed. It means that the vehicle is trying to save
the charge in the battery.
Turn off all unnecessary accessories to allow the
battery to recharge.
The normal battery voltage range is 11.5 to 15.5 volts.
CHANGE ENGINE OIL SOON
This message displays when service is required for the
vehicle. See your dealer. See Engine Oilon page 6‑17andScheduled Maintenanceon page 7‑3for more
information.
Acknowledging the CHANGE ENGINE OIL SOON
message will not reset the OIL LIFE REMAINING. That
must be done at the OIL LIFE screen under the vehicle
information menu. See “Oil Life”underDIC Operation
and Displays
on page 4‑47and Engine Oil Life Systemon page 6‑20.
4-55

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.
Leaving After Parking on a Hill
1. Apply and hold the brake pedal while you:
.start the engine,
.shift into a gear, and
.release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
The vehicle needs service more often when pulling a
trailer. See Scheduled Maintenanceon page 7‑3for
more information. Things that are especially important
in trailer operation are automatic transmission fluid,
engine oil, belts, cooling system and brake system. It is
a good idea to inspect these before and during the trip.
Check periodically to see that all hitch nuts and bolts
are tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily overheat during
severe operating conditions. See Engine Overheating
on page 6‑35.
Changing a Tire When Trailer Towing
If the vehicle gets a flat tire while towing a trailer, be
sure to secure the trailer and disconnect it from the
vehicle before changing the tire.
5-33

Automatic Transmission Fluid
When to Check and Change Automatic
Transmission Fluid
A good time to check the automatic transmission fluid
level is when the engine oil is changed.
Change the fluid and filter at the intervals listed in
Scheduled Maintenance
on page 7‑3and be sure to
use the transmission fluid listed in Recommended
Fluids and Lubricants on page 7‑9.
How to Check Automatic Transmission
Fluid (3.9L Engine)
Because this operation can be a little difficult, you
may choose to have this done at the dealer service
department.
If you do it yourself, be sure to follow all the instructions
here, or you could get a false reading on the dipstick.
Notice: Too much or too little fluid can damage the
transmission. Too much can mean that some of the
fluid could come out and fall on hot engine parts
or exhaust system parts, starting a fire. Too little
fluid could cause the transmission to overheat.
Be sure to get an accurate reading if checking the
transmission fluid. Wait at least 30 minutes before checking the
transmission fluid level if you have been driving:
.When outside temperatures are above
90°F (32°C).
.At high speed for quite a while.
.In heavy traffic
—especially in hot weather.
.While pulling a trailer.
To get the right reading, the fluid should be at normal
operating temperature, which is 180°F to 200°F
(82°C to 93°C).
Get the vehicle warmed up by driving about 15 miles
(24 km) when outside temperatures are above 50°F
(10°C). If it is colder than 50°F (10°C), you may have to
drive longer.
Checking the Fluid Level
Prepare the vehicle as follows: 1. Park the vehicle on a level place. Keep the engine running.
2. With the parking brake applied, place the shift lever in P (Park).
3. With your foot on the brake pedal, move the shift lever through each gear range, pausing for about
three seconds in each range. Then, position the
shift lever in P (Park).
4. Let the engine run at idle for three to five minutes.
6-23

How to Add Automatic Transmission
Fluid
Refer to the Maintenance Schedule to determine what
kind of transmission fluid to use. SeeRecommended
Fluids and Lubricants on page 7‑9.
If the fluid level is low, add only enough of the proper
fluid to bring the level into the cross-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough fluid at the dipstick hole to bring it to the proper level.
It does not take much fluid, generally less than
one pint (0.5 L). Do not overfill. Notice:
Use of the incorrect automatic transmission
fluid may damage the vehicle, and the damages may
not be covered by the vehicle's warranty. Always
use the automatic transmission fluid listed in
Recommended Fluids and Lubricants on page 7‑9.
3. After adding fluid, recheck the fluid level as described under “How to Check Automatic
Transmission Fluid” earlier in this section.
4. When the correct fluid level is obtained, push the dipstick back in all the way.
How to Check Automatic Transmission
Fluid (4.6L Engine)
For the 4.6L V8 engine, it is not necessary to check the
transmission fluid level. A transmission fluid leak is the
only reason for fluid loss. If a leak occurs, take the
vehicle to your dealer service department and have it
repaired as soon as possible.
6-25

Section 7 Maintenance Schedule
Maintenance Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Owner Checks and Services . . . . . . . . . . . . . . . . . . . . 7-8 Recommended Fluids and Lubricants . . . . . . . . . . . 7-9
Maintenance Replacement Parts . . . . . . . . . . . . . . . 7-11
Engine Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . 7-12
Maintenance Record . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
7-1

Maintenance Schedule
Introduction
Notice:Maintenance intervals, checks, inspections,
recommended fluids, and lubricants are necessary
to keep this vehicle in good working condition.
Damage caused by failure to follow scheduled
maintenance might not be covered by the vehicle
warranty.
As the vehicle owner, you are responsible for the
scheduled maintenance in this section. We recommend
having your dealer/retailer perform these services.
Proper vehicle maintenance helps to keep the vehicle in
good working condition, improves fuel economy, and
reduces vehicle emissions for better air quality.
Because of all the different ways people use vehicles,
maintenance needs vary. The vehicle might need more
frequent checks and services. Please read the
information under Scheduled Maintenance. To keep the
vehicle in good condition, see your dealer/retailer.
The maintenance schedule is for vehicles that:
.carry passengers and cargo within recommended
limits on the Tire and Loading Information label.
See Loading the Vehicle on page 5‑19.
.are driven on reasonable road surfaces within legal
driving limits.
.use the recommended fuel. See Gasoline Octaneon page 6‑6.
{WARNING:
Performing maintenance work on a vehicle can be
dangerous. In trying to do some jobs, you can be
seriously injured. Do your own maintenance work
only if you have the required know-how and the
proper tools and equipment for the job. If you
have any doubt, see your dealer to have a
qualified technician do the work. See Doing Your
Own Service Work on page 6‑4.
At your dealer/retailer, you can be certain that you will
receive the highest level of service available. Your
dealer/retailer has specially trained service technicians,
uses genuine replacement parts, as well as, up to date
tools and equipment to ensure fast and accurate
diagnostics.
The proper replacement parts, fluids, and lubricants to
use are listed in Recommended Fluids and Lubricants
on page 7‑9andMaintenance Replacement Partson
page 7‑11. We recommend the use of genuine parts
from your dealer/retailer.
7-2