2011 Buick Lucerne Service and Repair Manual

This factory service and repair manual for the 2011 Buick Lucerne names two naturally aspirated engines. The 3.9L V6 uses overhead valves and is listed as flex-fuel; the 4.6L V8 uses dual overhead camshafts and gasoline. The CX, CXL and Super trims come in one body, a 4-door sedan. The manual gives procedures, specifications and torque values for both engines and the flex-fuel system, ignition, cooling and transmission, plus wiring diagrams and diagnostics for the electrical system and body.

Engines covered

• 3.9L V6 (237 cu in) — OHV, naturally aspirated, flex-fuel
• 4.6L V8 (281 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• CX
• CXL
• Super

Known issues on the 2011 Lucerne. Among the 49 complaints owners submitted on the 2011 Lucerne, the electrical system leads with 23, followed by vehicle speed control at 5 and the fuel and propulsion system and service brakes at 4 apiece; 3 complaints reported a crash, 3 a fire and 3 an injury. The federal record also holds 2 recalls. One affects certain 2011 Lucerne vehicles with the eight-cylinder engine, where a starter or alternator cable resting on the power steering return line could chafe it open and leak fluid, risking lost assist or a fire. The other concerns certain vehicles whose key could be knocked out of the run position. Procedures, specifications, torque values, wiring diagrams and diagnostics address the steering, brakes and electrical system.