2009 Buick Lucerne Service and Repair Manual

This factory service and repair manual for the 2009 Buick Lucerne documents a sedan whose V6 can run on flex-fuel or gasoline. That 3.9L engine uses overhead valves and natural aspiration, while the alternative 4.6L V8 pairs dual overhead camshafts with gasoline. The body style is the 4-door sedan, and the trims are CX, CXL and Super. Procedures, specifications and torque values address the engines and their fuel system, including the flex-fuel capability of the V6, along with ignition, cooling and transmission.

Engines covered

• 3.9L V6 (237 cu in) — OHV, naturally aspirated, flex-fuel or gasoline
• 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 2009 Lucerne. Two recalls are on the federal record for the 2009 Lucerne. Certain 2009 Lucerne vehicles fitted with a heated washer fluid system were recalled because the washer heater module could overheat, melt its housing and possibly catch fire; the module was disabled and removed. The other covered certain vehicles whose ignition could be bumped out of run by a heavy key ring or a rough road, cutting engine power and possibly the air bags. The 128 owner complaints center on the electrical system (76) and the fuel and propulsion system (36), and 17 of them reported a fire, 6 a crash and 5 an injury. The manual's procedures, wiring diagrams and diagnostics apply to the electrical, fuel and ignition systems.