This manual covers the 1991 Chevrolet Lumina APV, a minivan built on the GM U-body platform. Designed for versatile family and cargo transport, this model is characterized by its distinctive aerodynamic styling and spacious interior. Engineered for reliability and practicality, the Lumina APV offered a comfortable ride and a user-friendly driving experience, making it a notable entry in the burgeoning minivan market of its era. Its front-wheel-drive layout and 3.1L V6 engine provided capable performance for daily commuting and longer journeys. This comprehensive service and repair manual provides OE-level detail for the 1991 Chevrolet Lumina APV. It is an invaluable resource for owners, mechanics, and technicians, offering extensive coverage of all major systems, including engine mechanicals, fuel and ignition systems, drivetrain, suspension, brakes, and electrical components. The manual details routine maintenance procedures, troubleshooting guides, diagnostic strategies, and step-by-step instructions for component repair and replacement, ensuring that the vehicle can be maintained and repaired to factory specifications.