Market Segment:
Full-size luxury sedan, positioned as a comfortable and spacious American cruiser.
Key Competitors:
Chrysler 300, Ford Five Hundred/Taurus, Toyota Avalon, Mercury Grand Marquis.
Comfort And Quietness:
Emphasized a quiet, smooth ride and comfortable interior, often with optional Magnetic Ride Control.
Powertrain Options:
Offered powerful V6 and V8 engine options, providing strong acceleration.
Diy Repair Benefit:
Empowers owners to perform their own maintenance and repairs, saving significant costs.
Engine:
Comprehensive diagnosis, repair, and overhaul of all gasoline engines offered.
Transmission:
Service, repair, and overhaul of automatic transmissions.
Drivetrain:
Front-wheel drive (FWD) systems, axles, and related components.
Brakes:
Hydraulic system, ABS, EBD, brake pad/rotor replacement, caliper service, parking brake.
Suspension:
Front and rear suspension, struts, shocks, control arms, bushings, wheel alignment specifications.
Steering:
Power steering system, rack and pinion, steering column, linkages.
Electrical:
Charging system, starting system, ignition system, lighting, power windows, locks, mirrors, wipers, horns, instrument cluster, diagnostic connectors.
HVAC:
Heating, ventilation, air conditioning system diagnosis, refrigerant handling, component replacement.
Body:
Body panel repair, door mechanisms, glass replacement, interior trim, bumpers, exterior trim.
Chassis:
Frame, subframes, and related structural components.
Fuel System:
Fuel pump, fuel injectors, fuel filter, fuel tank, evaporative emissions control (EVAP) system.
Exhaust System:
Exhaust manifolds, catalytic converters, mufflers, pipes, hangers.
Cooling System:
Radiator, coolant, water pump, thermostat, hoses, cooling fans.
Safety Systems:
Airbag system diagnosis and repair, seat belt mechanisms.
Routine Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, tire rotations.
Troubleshooting:
Diagnostic procedures, symptom-based troubleshooting guides, fault code interpretation.
Repair Procedures:
Step-by-step instructions for component removal, installation, and repair for all covered systems.
Diagnostic Procedures:
Detailed guides for diagnosing electrical, mechanical, and performance issues.
Torque Specifications:
Precise torque values for all fasteners critical to safety and component integrity.
Wiring Diagrams:
Comprehensive electrical wiring schematics for all vehicle circuits.
Component Replacement:
Detailed instructions for replacing all major and minor components.
Rebuilding Procedures:
Guidelines for rebuilding specific components if applicable.
Depth:
Complete, from basic maintenance to advanced diagnostics and component overhaul. Designed for professional technicians and advanced DIY enthusiasts.
Engine Options:
3.8L V6, 3.9L V6 (LZ9), 4.6L V8 (Northstar - LH2, L37)
3.8L V6 Horsepower:
~200 hp
3.8L V6 Torque:
~230 lb-ft
3.9L V6 Horsepower:
~240 hp
3.9L V6 Torque:
~240 lb-ft
4.6L V8 Horsepower:
~275 hp (LH2) / ~292 hp (L37)
4.6L V8 Torque:
~272 lb-ft (LH2) / ~288 lb-ft (L37)
Fuel Delivery:
Multi-point fuel injection (MPFI)
Engine Codes Examples:
3.8L (L26), 3.9L (LZ9), 4.6L V8 (LH2, L37)
NHTSA Front Impact Driver:
Good (for most model years).
NHTSA Front Impact Passenger:
Good (for most model years).
IIHS Front Offset Score:
Good (for most model years).
ABS:
Standard Anti-lock Braking System.
Traction Control:
Standard Traction Control System (TCS).
Stability Control:
Available StabiliTrak (Electronic Stability Control).
Airbags:
Frontal airbags, side-impact airbags, available head curtain airbags.
Seatbelts:
Front and rear seat belts with pretensioners.
Oil Change Interval:
Every 7,500 miles (12,000 km) or 12 months, with synthetic oil. Check manual for specific recommendations based on driving conditions.
Tire Rotation Interval:
Every 7,500 miles (12,000 km).
Engine Air Filter Replacement:
Recommended every 30,000 miles (48,000 km) or as needed based on inspection.
Cabin Air Filter Replacement:
Recommended every 15,000 miles (24,000 km) or annually.
Engine Oil Type:
SAE 5W-30 (synthetic recommended).
Coolant Type:
GM P/N 1052886 or 12378395 (Orange/Pink Long-Life OAT Coolant).
Common Issues Engine:
Northstar V8 engines can be prone to intake manifold gasket leaks and potential head gasket issues if not properly maintained; 3.8L V6 generally reliable.
Common Issues Suspension:
Front suspension components (ball joints, control arm bushings) can wear over time, leading to clunking noises and alignment issues.
Common Issues Electrical:
Occasional issues with power window regulators, door lock actuators, and infotainment system glitches.
Common Issues Hv Ac:
Blend door actuator failures leading to incorrect HVAC temperature output.
Engine Oil Capacity 3.8L V6:
Approx. 4.5 quarts (4.3 liters) with filter change.
Engine Oil Capacity 4.6L V8:
Approx. 4.5 quarts (4.3 liters) with filter change.
Transmission Fluid Capacity:
Approx. 5.5 quarts (5.2 liters) for a pan drop and refill (4T65-E).
Buick Legacy:
Buick, established in 1899, has a long history of producing comfortable, refined, and durable American vehicles.
Lucerne Predecessor:
Replaced the Buick LeSabre and Park Avenue, consolidating Buick's large sedan offerings.
Platform:
Based on the GM Epsilon platform (shared with Cadillac DTS), later adapted from the Holden Caprice platform for some components. Generally considered a derivative of the C-Body platform.
Manufacturing Location:
Hamtramck, Michigan, USA.
Production Period:
2006-2011.
