The 2018 Buick LaCrosse is a premium sedan designed for comfort, quietness, and a refined driving experience. Built on the G2XX platform, this model emphasizes advanced technology, including active noise cancellation and available eAssist mild-hybrid technology, positioning it competitively against other large sedans. The LaCrosse offers a choice between a 2.5L Inline-4 eAssist powertrain and a more powerful 3.6L V6 engine, both paired with sophisticated automatic transmissions. Its engineering prioritizes a smooth ride and a quiet interior, making it an excellent choice for discerning drivers seeking both luxury and performance. This comprehensive Factory Workshop Service Repair Manual provides in-depth information for the 2018 Buick LaCrosse. It covers all essential systems, including powertrain, chassis, electrical, body, interior, HVAC, driver assistance, infotainment, and emissions. Detailed procedures for scheduled maintenance, diagnostics, component overhaul, and repair are included, along with complete system wiring diagrams and special tool identification. With over 10,000 pages of factory-level detail, high-resolution illustrations, and searchable content, this manual is an indispensable resource for owners, mechanics, and technicians to ensure the proper maintenance and repair of the vehicle.