Vehicle Segment:
Full-size luxury sedan.
Target Audience:
Consumers seeking comfortable, spacious, and well-equipped American luxury sedans. Also appealing to DIY enthusiasts and independent repair shops.
Key Competitors:
Ford Five Hundred/Taurus, Chrysler 300, Toyota Avalon, Lincoln Town Car.
Dealer Quality Info:
Officially licensed and derived from OE (Original Equipment) materials, ensuring factory-level accuracy and completeness.
Convenience:
Instant online access, eliminating the need for physical manuals and offering superior searchability.
Cost Savings:
Empowers owners to perform DIY repairs and maintenance, significantly reducing labor costs associated with dealership or independent shop visits.
Engine Mechanical:
Detailed diagnosis, repair, and overhaul procedures for all powertrain components, including engine assembly, cylinder head, valvetrain, crankshaft, pistons, connecting rods, lubrication system, cooling system.
Engine Performance:
Fuel system diagnostics and repair (injection, fuel pump, pressure regulator), ignition system service (coils, spark plugs, sensors), emissions control systems (catalytic converter, O2 sensors, EVAP).
Transmission Powertrain:
Service and repair for automatic transmissions (e.g., 4T80-E), including fluid changes, seal replacement, clutch pack servicing, torque converter, valve body diagnostics.
Drivetrain Axles:
Front-wheel drive axle shaft inspection, replacement, and boot repair; differential service (if applicable to specific powertrain configurations).
Suspension Steering:
Detailed procedures for front and rear suspension components (struts, springs, control arms, ball joints, bushings), steering system (rack and pinion, power steering pump, tie rods), alignment specifications.
Brakes:
Front and rear brake system service (disc brakes), including rotor and pad replacement, caliper service, brake fluid flush and bleeding, ABS system diagnostics and component testing.
Electrical Lighting:
Comprehensive wiring diagrams, fuse and relay identification and testing, lighting system repair (headlights, taillights, interior), bulb replacement, diagnostics for electrical faults.
Body Chassis:
Body panel repair, door mechanisms, glass replacement, bumper service, chassis lubrication points, rust prevention.
Heating Ventilation Ac:
HVAC system diagnosis, refrigerant handling and recharge, compressor, evaporator, condenser service, blower motor, climate control module diagnostics.
Maintenance:
Scheduled maintenance intervals, oil changes, filter replacements, fluid checks and top-offs, tire rotation, spark plug replacement, battery maintenance.
Troubleshooting:
Diagnostic flowcharts, common fault identification, step-by-step troubleshooting guides for various systems and symptoms, error code interpretation.
Repair Rebuild:
Complete disassembly and reassembly instructions for all major components and systems, including engine rebuild, transmission overhaul, brake caliper rebuild, power steering rack replacement.
Diagnostics:
On-Board Diagnostics (OBD-II) system information, scan tool usage, diagnostic trouble code (DTC) retrieval and interpretation, sensor testing, module programming and relearning procedures.
Wiring Diagrams:
Detailed, system-specific wiring diagrams for all electrical circuits, including power distribution, grounds, control modules, and sensor connections.
Level Of Detail:
Factory-level diagnostic and repair procedures, including detailed specifications, tolerances, torque values, special tool requirements, and component identification.
Engine Name 1:
3.8L V6 (L26)
Displacement 1:
3800 cc / 230.5 cubic inches
Configuration 1:
Naturally Aspirated, Overhead Valve (OHV), 90-degree V-angle
Horsepower 1:
205 hp @ 5200 rpm
Torque 1:
230 lb-ft @ 4000 rpm
Fuel System 1:
Sequential Fuel Injection (SFI), Electronic Throttle Control (ETC)
Bore X Stroke 1:
3.80 in x 3.39 in (96.5 mm x 86.0 mm)
Compression Ratio 1:
9.4:1
Engine Name 2:
3.6L V6 (LY7) - 'High Feature V6'
Displacement 2:
3564 cc / 217.5 cubic inches
Configuration 2:
Naturally Aspirated, Dual Overhead Camshaft (DOHC), 4 valves per cylinder, 90-degree V-angle
Horsepower 2:
233 hp @ 6000 rpm
Torque 2:
247 lb-ft @ 4400 rpm
Fuel System 2:
Sequential Fuel Injection (SFI), Electronic Throttle Control (ETC)
Bore X Stroke 2:
3.70 in x 3.39 in (94.0 mm x 85.6 mm)
Compression Ratio 2:
10.0:1
Oil Change Interval:
Every 7,500 miles or 12 months, using synthetic oil (consult manual for specific oil type/viscosity).
Engine Air Filter:
Inspect every 7,500 miles; replace as needed or every 30,000 miles.
Cabin Air Filter:
Inspect every 15,000 miles; replace as needed or every 30,000 miles.
Spark Plugs 3.8L:
Replace at 100,000 miles (typically iridium-tipped).
Spark Plugs 3.6L:
Replace at 100,000 miles (typically iridium-tipped).
Transmission Fluid Flush:
Replace fluid and filter every 60,000 to 100,000 miles (consult manual based on driving conditions).
Coolant Flush:
Replace coolant every 5 years or 100,000 miles.
Engine Oil 3.8L:
API Certified SAE 3.8W-30 Synthetic (GM recommends Dexos or equivalent)
Engine Oil 3.6L:
API Certified SAE 3.5W-30 Synthetic (GM recommends Dexos or equivalent)
Transmission Fluid:
Dexron VI Automatic Transmission Fluid
Coolant:
Dex-Cool® (Orange silicate-free antifreeze/coolant)
Power Steering Fluid:
GM Power Steering Fluid (or equivalent)
Engine Mounts:
Premature failure of engine mounts, particularly on the 3.8L, leading to vibrations and noise.
Transmission Hard Shifts:
Some instances of hard shifting or transmission slippage, often related to TCM software updates or solenoid issues.
ABS Wheel Speed Sensors:
Failure of ABS wheel speed sensors can lead to ABS, Traction Control, and StabiliTrak warning lights.
Power Steering Leaks:
Leaks from the power steering system, often at the pump or rack seals.
Heater Core Leaks:
Some models may experience heater core leaks, leading to coolant loss and a sweet smell in the cabin.
Buick Legacy:
Buick, founded in 1899, is one of the oldest American automotive brands, historically associated with a focus on comfort, quietness, and dignified styling.
Lucerne Introduction:
The Buick Lucerne debuted for the 2006 model year, succeeding the Buick LeSabre and Park Avenue. It was based on the GM Epsilon platform (though later models utilized the GMX335 platform shared with large RWD platforms for a period) and offered a blend of traditional Buick comfort with updated styling and technology.
2007 Updates:
For 2007, minor refinements were made, including package updates and potentially slight revisions to available features. The core mechanicals and styling remained largely consistent with the inaugural year.
Assembly Location:
Detroit-Hamtramck Assembly Plant, Hamtramck, Michigan, USA.
Production Span:
2006-2011
