2007 BUICK LUCERNE 3.8L engine

Cooling System (3.8L V6 Engine)
When you decide it is safe to lift the hood, here is
what you will see:
A. Radiator Pressure Cap
B. Coolant Recovery Tank
C. Electric Engine Cooling Fans{CAUTION:
An electric engine cooling fan under the
hood can start up even when the engine
is not running and can injure you. Keep
hands, clothing, and tools away from any
underhood electric fan.
If the coolant inside the coolant recovery tank is
boiling, do not do anything else until it cools down.
The vehicle should be parked on a level surface.
The coolant level should be at or above the
FULL COLD mark when the engine is cold. The
coolant level should be above the FULL COLD
mark under normal operating conditions. If it is not,
you may have a leak at the pressure cap or in
the radiator hoses, heater hoses, radiator, water
pump or somewhere else in the cooling system.
354

Capacities and Specications
The following approximate capacities are given in English and metric conversions. SeeRecommended
Fluids and Lubricants on page 452for more information.
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134aFor the air conditioning system refrigerant charge
amount, see the refrigerant caution label located
under the hood. See your dealer for more
information.
Automatic Transaxle- Drain and Rell
3.8L V6 Engine 7.4 qt 7.0L
4.6L V8 Engine 7.0 qt 6.6 L
Engine Cooling System
3.8L V6 Engine 11.8 qt 11.2 L
4.6L V8 Engine 12.7 qt 12.0 L
Engine Oil with Filter
3.8L V6 Engine 4.5 qt 4.3 L
4.6L V8 Engine 7.5 qt 7.1 L
436

ApplicationCapacities
English Metric
Fuel Tank
3.8L Engine (with NU6 emissions) sold new in CA, ME, VT,
NY, MA (see your dealer for bordering states)18.0 gal 68.1 L
3.8L Engine (without NU6 emissions) sold new in all other
states (see your dealer for more information)18.5 gal 70.0 L
4.6L Engines sold new in all states 18.5 gal 70.0 L
Wheel Nut Torque 100 lb ft
140Y
All capacities are approximate. When adding, be sure to ll to the appropriate level, as recommended in this
manual. Recheck uid level after lling.
Engine Specications
Engine VIN Code Transaxle Spark Plug Gap
3.8L V6 2 Automatic 0.060 in (1.52 mm)
4.6L V8 Y Automatic 0.050 in (1.27 mm)
437

Scheduled Maintenance (cont’d)
Service MaintenanceIMaintenanceII
Perform any needed additional services. See “Additional Required Services” in
this section.••
Inspect suspension and steering components.See footnote (b).•
Inspect engine cooling system.See footnote (c).•
Inspect wiper blades.See footnote (d).•
Inspect restraint system components.See footnote (e).•
Lubricate body components.See footnote (f).•
3.8L Engine Only: Check transaxle uid level and add uid as needed.•
Replace passenger compartment air lter.See footnote (g).•
Additional Required Services
The following services should be performed at the rst maintenance service (IorII) after the indicated
miles (kilometers) shown for each item.
Additional Required Services
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
Inspect fuel system for damage or
leaks.• •••••
Inspect exhaust system for loose or
damaged components.• •••••
444

Normal Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your
dealer.
Normal Maintenance Replacement Parts
Part GM Part NumberACDelco®Part
Number
Engine Air Cleaner/Filter 22676970 A1627C
Engine Oil Filter
3.8L V6 Engine 25010792 PF47
4.6L V8 Engine 89017342 PF61
Passenger Compartment Air Filter 15811562 CF138
Spark Plugs
3.8L V6 12568387 41-101
4.6L V8 12571535 41-987
Windshield Wiper Blades
Driver’s Side – 23.6 inches (60.0 cm) 15788730 —
Passenger’s Side – 20.8 inches (53.0 cm) 15788731 —
453

Engine Drive Belt Routing
3.8L V6 Engine
4.6L V8 Engine
454