2004 Buick Century Service and Repair Manual

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This factory service and repair manual for the 2004 Buick Century documents a 4-door sedan offered as the Custom or the Limited. Whichever trim is on the driveway, the engine is the 3.1L V6: overhead valves, no turbocharger or supercharger, gasoline fuel. For the V6 there are torque values and specifications; for the chassis, brake, suspension and steering procedures; for the electrical system, wiring diagrams and diagnostics.

Engines covered

  • 3.1L V6 (189 cu in) — OHV, naturally aspirated, gasoline

Body styles covered

  • 4-door sedan

Trims covered

  • Custom
  • Limited

Known issues on the 2004 Century. NHTSA has recorded 39 owner complaints for the 2004 Century. Exterior lighting leads with 11, air bags account for 6, the electrical system 5, the engine 4 and the fuel and propulsion system 3. Four of those complaints reported a crash and 4 reported an injury. The manual addresses the systems involved, lighting and electrical, the engine and its fuel system, and the air bag system, with procedures, specifications, torque values, wiring diagrams and diagnostics.

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