Page 401 of 450
Black plate (115,1)Buick Lucerne Owner Manual - 2011
Fuses Usage
47Electronic Leveling Control
Compressor (J-Case)
48 Blower (J-Case)
49 Not Used
Resistor Usage
50 Terminating Resistor
Relays Usage
51 Not Used
52 Rear Defogger
53 Electronic Leveling Control
Compressor
58 Park Lamps
59 Fuel Pump
60 Not Used
61 Not Used
Relays Usage
62 Unlock
63 Lock
64 Run
65 Daytime Running Lamps
66 Not Used
67 Trunk Release
68 Not Used
69 Not Used
70 Retained Accessory Power (RAP)
Circuit
Breakers Usage
54 Right Front Seat
55 Left Front Power Seat
56 Power Windows
57 Power Tilt Steering Wheel
6-115
Page 402 of 450
Black plate (116,1)Buick Lucerne Owner Manual - 2011
Capacities and Specifications
The following approximate capacities are given in English and metric conversions. SeeRecommended Fluids and
Lubricantson page 7‑8for more information.
Application Capacities
English Metric
Air Conditioning Refrigerant R134a For the air conditioning system refrigerant charge
amount, see the refrigerant label located under the hood. See your dealer for more information.
Engine Cooling System 3.9L V6 Engine 9.7 qt9.2 L
4.6L V8 Engine 12.7 qt12.0 L
Engine Oil with Filter
3.9L V6 Engine 4.0 qt3.8 L
4.6L V8 Engine 7.4 qt7.0 L
Fuel Tank 18.5 gal70.0 L
Transmission Fluid - Bottom Pan Removal 3.9L V6 Engine 7.4 qt7.0 L
4.6L V8 Engine 7.4 qt7.0 L
Wheel Nut Torque 100 lb ft140Y
All capacities are approximate. When adding, be sure to fill to the approximate level, as recommended in this manual.
Recheck fluid level after filling.
6-116
Page 403 of 450
Black plate (117,1)Buick Lucerne Owner Manual - 2011
Engine Specifications
EngineVIN CodeTransmissions Spark Plug Gap
3.9L V6 Engine MAutomatic0.040 in (1.01 mm)
4.6L V8 Engine SAutomatic0.050 in (1.27 mm)
6-117
Page 404 of 450
Black plate (118,1)Buick Lucerne Owner Manual - 2011
2NOTES
6-118
Page 405 of 450
Black plate (1,1)Buick Lucerne Owner Manual - 2011
Section 7 Maintenance Schedule
Maintenance Schedule. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Owner Checks and Services . . . . . . . . . . . . . . . . . . . . 7-6 Recommended Fluids and Lubricants . . . . . . . . . . . 7-8
Maintenance Replacement Parts . . . . . . . . . . . . . . 7-10
Engine Drive Belt Routing . . . . . . . . . . . . . . . . . . . . . . 7-11
Maintenance Record . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
7-1
Page 406 of 450

Black plate (2,1)Buick Lucerne Owner Manual - 2011
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 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.
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 5‑18.
.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, you can be certain that you will receive
the highest level of service available. Your dealer 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 7‑8andMaintenance Replacement Partson
page 7‑10. We recommend the use of genuine parts
from your dealer.
7-2
Page 407 of 450

Black plate (3,1)Buick Lucerne Owner Manual - 2011
Rotation of New Tires
To maintain ride, handling, and performance of the
vehicle, it is important that the first rotation service for
new tires be performed. Tires should be rotated every
12 000 km/7,500 miles. SeeTire Inspection and
Rotation on page 6‑70.
Scheduled Maintenance
When the Change Engine Oil Soon
Message Displays
Change engine oil and filter. See Engine Oilon
page 6‑18. An Emission Control Service.
When the CHANGE ENGINE OIL SOON message
displays, service is required for the vehicle as soon as
possible, within the next 1 000 km/600 miles. If driving
under the best conditions, the engine oil life system
might not indicate the need for vehicle service for more
than a year. The engine oil and filter must be changed
at least once a year and the oil life system must be
reset. Your dealer has trained service technicians who
will perform this work and reset the system. If the
engine oil life system is reset accidentally, service the
vehicle within 5 000 km/3,000 miles since the last
service. Reset the oil life system whenever the oil is
changed. See Engine Oil Life System on page 6‑22.
Every Engine Oil Change
.Change engine oil and filter. Reset oil life system.
SeeEngine Oilon page 6‑18andEngine Oil Life
Systemon page 6‑22. An Emission Control
Service.
.Engine coolant level check. See Engine Coolant
(4.6L Engine)on page 6‑28or Engine Coolant
(3.9L Engine) on page 6‑31.
.Engine cooling system inspection. Visual
inspection of hoses, pipes, fittings, and clamps
and replacement, if needed.
.Windshield washer fluid level check. See
Windshield Washer Fluid on page 6‑38.
.Windshield wiper blade inspection for wear,
cracking, or contamination and windshield and
wiper blade cleaning, if contaminated. See
Windshield and Wiper Blades
on page 6‑103.
Worn or damaged wiper blade replacement.
See Windshield Wiper Blade Replacement
on
page 6‑55.
.Tire inflation pressures check. See Inflation - Tire
Pressure on page 6‑64.
.Tire wear inspection. See Tire Inspection and
Rotation on page 6‑70.
.Rotate tires if necessary. See Tire Inspection and
Rotation on page 6‑70.
7-3
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Black plate (4,1)Buick Lucerne Owner Manual - 2011
.Fluids visual leak check (or every 12 months,
whichever occurs first). A leak in any system must
be repaired and the fluid level checked.
.Engine air cleaner filter inspection. SeeEngine Air
Cleaner/Filter on page 6‑23.
.Brake system inspection (or every 12 months,
whichever occurs first).
.Steering and suspension inspection. Visual
inspection for damaged, loose, or missing parts or
signs of wear.
.Body hinges and latches, key lock cylinders, and
rear compartment, hood, glove box door, and
console door hinges and latches lubrication.
See Recommended Fluids and Lubricants
on
page 7‑8. More frequent lubrication may be
required when the vehicle is exposed to a
corrosive environment. Applying silicone grease on
weatherstrips with a clean cloth makes them last
longer, seal better, and not stick or squeak.
.Restraint system component check. See Checking
the Restraint Systems on page 2‑70.
.Fuel system inspection for damage or leaks.
.Exhaust system and nearby heat shields
inspection for loose or damaged components.
Additional Required Services
Every 12 000 km/7,500 Miles
.Rotate tires. Tires should be rotated every
12 000 km/7,500 miles. See Tire Inspection and
Rotation on page 6‑70.
At Each Fuel Stop
.Engine oil level check. See Engine Oilon
page 6‑18.
.Engine coolant level check. See Engine Coolant
(4.6L Engine)on page 6‑28or Engine Coolant
(3.9L Engine) on page 6‑31.
.Windshield washer fluid level check. See
Windshield Washer Fluid on page 6‑38.
Once a Month
.Tire inflation pressures check. See Inflation - Tire
Pressure on page 6‑64.
.Tire wear inspection. See Tire Inspection and
Rotation on page 6‑70.
.Sunroof track and seal inspection, if equipped. See
Sunroof on page 3‑51.
7-4