2008 Buick Lucerne Service and Repair Manual

This factory service and repair manual for the 2008 Buick Lucerne takes in four trims, CX, CXL, CXS and Super, on the 4-door sedan. Two naturally aspirated gasoline engines are listed: a 3.8L V6 with overhead valves and a 4.6L V8 with dual overhead camshafts. The manual provides procedures, specifications and torque values for both engines, the fuel system, ignition and cooling, and wiring diagrams and diagnostics for the electrical system that runs through the sedan.

Engines covered

• 3.8L V6 (231 cu in) — OHV, naturally aspirated, gasoline
• 4.6L V8 (281 cu in) — DOHC, naturally aspirated, gasoline

Body styles covered

• 4-door sedan

Trims covered

• CX
• CXL
• CXS
• Super

Known issues on the 2008 Lucerne. On the 2008 Lucerne, the federal record lists 3 recalls, and most involve certain cars fitted with heated washer fluid. A short on the heater's circuit board could overheat a ground wire, fixed with a fused harness; when modules still overheated or melted and could ignite, a later campaign had them disabled and removed. The third recalled certain 2008 Lucerne vehicles over ignition keys that a weighty key ring could jar out of run. Owners logged 218 complaints, led by the electrical system (121), fuel and propulsion (50) and engine (24); a fire was reported in 26, a crash in 13 and an injury in 6. The manual supplies wiring diagrams, diagnostics, procedures and specifications for the electrical, fuel and ignition systems.