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.