The 2005 Buick Park Avenue is a full-size luxury sedan renowned for its spacious interior, comfortable ride, and quiet cabin, offering smooth V6 and V8 engine options. Built on the GM G platform, this vehicle exemplifies Buick's legacy of producing well-equipped American sedans, providing a refined driving experience. Its design emphasizes upscale features and a focus on passenger comfort, positioning it as a strong competitor in its segment. The 2005 model represents the final iteration of the Park Avenue, a nameplate with a long history of evolution in the automotive market. This comprehensive Workshop Service Repair Manual provides detailed information for the 2005 Buick Park Avenue, covering all applicable engines, trims, and transmissions. It is designed to assist owners, mechanics, and technicians with every aspect of vehicle maintenance and repair. The manual includes step-by-step instructions for diagnostics, preventative maintenance, component replacement, and rebuild procedures for major systems such as the engine, transmission, brakes, electrical systems, suspension, steering, HVAC, and more. With extensive coverage and clear, user-friendly instructions, this manual aims to facilitate efficient and accurate service, ensuring the longevity and optimal performance of your vehicle.