The Buick Lucerne, produced from 2006 to 2009, is a full-size luxury sedan built on the GM Epsilon platform. Designed as a successor to the LeSabre and Park Avenue, it emphasizes a quiet ride, comfort, and a spacious interior, competing with models like the Ford Taurus and Chevrolet Impala. The Lucerne was offered with a choice of V6 and V8 engine options, including the 3.8L V6 and the more powerful 5.3L V8, both paired with a 4-speed automatic transmission. Its engineering prioritizes refinement and a smooth driving experience, making it a capable and comfortable vehicle for daily use and longer journeys.
This comprehensive Factory Service Repair Manual provides detailed information for all Buick Lucerne models and trim levels produced between 2006 and 2009. Covering all engine types, the manual offers step-by-step repair instructions, maintenance schedules, fluid specifications, and diagnostic procedures. Key areas include powertrain servicing, brake systems, suspension and steering, electrical and electronic systems, and climate control. With hundreds of illustrations, wiring diagrams, and diagnostic trouble trees, this manual is an essential resource for owners and technicians to maintain, troubleshoot, and repair the Lucerne effectively, ensuring its continued performance and reliability.
Model Years Covered:
2006, 2007, 2008, 2009
Platform:
GM Epsilon platform (Extended)
Vin Code:
Starts with 1G2
Positioning:
Full-size luxury sedan, successor to the Buick LeSabre and Park Avenue
Competitors:
Ford Taurus, Mercury Sable, Dodge Charger, Chevrolet Impala, Cadillac DTS (platform sibling)
Design Philosophy:
Emphasis on quiet ride, comfort, and spacious interior
Powertrain Options:
Offered with V6 and V8 engine options
Manual Benefit:
Enables DIY repairs, cost savings, and in-depth understanding of vehicle systems
Manual Type:
Factory Service Repair Manual
Engine Coverage:
All engine types included
Model Variant Coverage:
All models and trim levels
Compatibility:
Windows, Mac, iOS (iPhone/iPad), Android
Powertrain:
Engine overhaul and rebuilding, transmission removal/installation, transmission in-car servicing, timing belt service, serpentine belt routing
Brakes:
Brake servicing procedures, specifications
Suspension Steering:
Front end alignment procedures and specifications, suspension systems, U-joint and CV-joint service
Electrical Electronics:
Wiring diagrams, computer diagnostic trouble codes, diagnostic trouble trees, troubleshooting and diagnostics
Body Chassis:
Sunroof service, vacuum diagrams
Climate Control:
Air conditioning service and capacities
Maintenance:
Factory maintenance schedules and charts, fluid capacities, torque specifications
Repair:
Step-by-step instructions for simple to complicated repairs, engine rebuilding, brake servicing, transmission servicing, suspension work
Diagnostics:
Trouble codes, computer diagnostic codes, troubleshooting and diagnostics, engine performance analysis, diagnostic trouble tree charts
Depth:
Comprehensive factory-level information, suitable for professional mechanics and advanced DIY enthusiasts
Illustrations:
Hundreds of detailed illustrations and diagrams
Document Quality:
Original Adobe PDF, perfect quality, perfect printing
Searchability:
Fully indexed, bookmarked by topic, quick search functionality
Print Options:
Print entire manual or select pages
Zoom Capability:
Zoom in on diagrams and pictures
Archiving Requirement:
WinZip (or equivalent) required for extraction
Binding:
N/A (Digital PDF)
Engine 1 Variant:
3.8L V6 (L36/3800 Series III)
Engine 1 Horsepower:
200-205 hp
Engine 1 Torque:
230-235 lb-ft
Engine 2 Variant:
5.3L V8 (LS4 Vortec)
Engine 2 Horsepower:
303 hp
Engine 2 Torque:
323 lb-ft
Fuel Delivery:
Sequential Port Fuel Injection (SFI)
Recommended Fuel:
87 Octane Unleaded Gasoline (V6), 91 Octane Unleaded Gasoline (V8)
Transmission Type:
4-speed automatic (4T65-E)
Transmission Type V8:
4-speed automatic (4T65-E HD)
Shift Control:
Driver Shift Control (with manual mode on some trims)
Transmission Fluid:
Dexron VI Automatic Transmission Fluid
Length:
Approx. 203 inches
Height:
Approx. 58 inches
Wheelbase:
Approx. 116 inches
Trunk Volume:
Approx. 17.1 cubic feet
Curb Weight V6:
Approx. 3600-3700 lbs
Curb Weight V8:
Approx. 3800-3900 lbs
NHTSA Front Impact:
5-star
NHTSA Side Impact:
5-star
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Standard Traction Control System (TCS)
Airbags:
Front airbags, side-impact airbags, available front and rear head curtain airbags
Seatbelts:
Pretensioning seatbelts with load limiters
Audio System:
Available Bose premium audio system, CD player, MP3 capability
Navigation:
Optional touch-screen navigation system
Parking Assist:
Available Ultrasonic Rear Park Assist
Remote Start:
Available Remote Keyless Entry and Remote Start System
Onstar:
Available OnStar system for safety and communication services
Oil Change Interval:
Every 7,500 miles or 6 months (synthetic blend)
Transmission Fluid Service:
Inspect every 30,000 miles, replace as needed or per severe service schedule
Coolant Flush:
Initial flush at 150,000 miles, then every 75,000 miles thereafter
Engine Oil Type:
SAE 5W-30 Synthetic Blend
Engine Coolant:
GM P/N 12346290 (Dex-Cool) or equivalent orange coolant
Torque Converter Shudder:
Common issue with the 4T65-E transmission, often resolved by fluid service or updated torque converter clutch.
Intake Manifold Gaskets:
Leaking intake manifold gaskets on the 3800 Series III V6 can occur, leading to coolant leaks.
Window Regulators:
Power window regulators can be a common failure point.
Buick Legacy:
Long history of producing comfortable, quiet, and refined American sedans
Lucerne Introduction:
Introduced for the 2006 model year, replacing the Buick LeSabre and Park Avenue
Platform Sharing:
Shares its platform with the Cadillac DTS, signaling a focus on luxury and comfort
Manufacturing Location:
Detroit/Hamtramck Assembly Plant, Michigan, USA
Production End Year:
2011 (discontinued)
Jd Power Quality:
Received mixed ratings in initial quality surveys, common for large sedans of its era. Manual addresses all operational aspects.
Consumer Reports:
Varied ratings, often highlighting comfort but sometimes mentioning reliability concerns that this manual helps mitigate through proper maintenance.
