2005 Buick Century Service and Repair Manual

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Factory-Grade Data

2005 Buick Century service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Special Edition Sedan 4-Door
  • Custom Sedan 4-Door
  • Limited Sedan 4-Door

Engines covered

  • 3.1L 189Cu. In. V6 GAS OHV Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams

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Vehicle Safety Data

2005 Buick Century Recalls & Complaints

NHTSA #09E00500017/02/2009Component: STEERING

DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONSTM" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEM

Consequence

A BROKEN STEERING KNUCKLE COULD RESULT IN LOSS OF STEERING CONTROL AND A POSSIBLE CRASH WITHOUT WARN

Remedy

DORMAN WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE STEERING KNUCKLES FREE OF CHARGE AND REIMBURSE T

TSB #11020816

This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

TSB #11019074

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

TSB #11019073

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

TSB #11019072

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

TSB #11014455

This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the

TSB #11011782

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking

TSB #11009156

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and

TSB #11008956

This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).

Showing the 8 most recent of 497 technical service bulletins on file with NHTSA.

20071108Component: AIR BAGSCrash reported1 injured

TL*THE CONTACT OWNS A 2005 BUICK CENTURY. WHILE DRIVING 35 MPH, THE FRONT OF THE CONTACT'S VEHICLE CRASHED INTO THE SIDE OF ANOTHER VEHICLE. THE AIR BAGS FAILED TO DEPLOY. THE VEHICLE WAS DESTROYED

20250404Component: ELECTRICAL SYSTEM

No abs light on but they don't work. But also there is hot wire running at all times I don't know where it coming from my o2 sensor keep coming on

20250404Component: FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING

No abs light on but they don't work. But also there is hot wire running at all times I don't know where it coming from my o2 sensor keep coming on

20160616Component: SERVICE BRAKES

TOTAL BRAKE FAILURE, DUE TO BRAKE LINE CORROSION. FORTUNATELY HAPPENED FIRST THING IN THE MORNING WHILE ONLY ABOUT 1000 FEET FROM HOME AND WHILE DRIVING AT LOW SPEED WAS ABLE TO SAFELY STOP.

20160115Component: ELECTRICAL SYSTEM

TL* THE CONTACT OWNS A 2005 BUICK CENTURY. WHILE DRIVING APPROXIMATELY 60 MPH, THE LOW BEAMS STOPPED WORKING AND HINDERED THE CONTACT'S VISIBILITY WHILE THE VEHICLE WAS IN MOTION. THE CONTACT HAD TO H

Showing the 5 most serious of 35 complaints filed with NHTSA.

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