The 2003 Chrysler 300M is a four-door luxury sedan built on the LH platform, known for its distinctive European-inspired styling and comfortable, powerful driving experience. This model was positioned as a premium offering, competing with established luxury brands by providing a spacious interior, a robust 3.5L V6 EGG engine producing 255 horsepower, and a smooth 42LE automatic transmission. Notable features include standard leather-trimmed seats, available premium audio systems, and a focus on luxury appointments, making it a compelling choice for those seeking a blend of performance and refinement. This comprehensive factory service manual provides in-depth technical information essential for the maintenance, troubleshooting, and repair of all 2003 Chrysler 300M trims. Covering powertrain systems including the 3.5L V6 engine and 42LE automatic transmission, chassis components, and electrical systems, this manual details everything from scheduled maintenance procedures and fluid specifications to complex repair diagnostics and wiring diagrams. With over 1500 pages of detailed instructions, component testing, and torque specifications, this resource is invaluable for owners and technicians alike, ensuring the longevity and optimal performance of the vehicle.