1998 Buick Century Service and Repair Manual

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Covers all 1998 Century trims — Custom Sedan 4-Door, Limited Sedan 4-Door ·
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1998 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

  • 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
NHTSA #99V35600017/12/1999Component: EXTERIOR LIGHTING:HEADLIGHTS

VEHICLE DESCRIPTION: PASSENGER VEHICLES. THESE VEHICLES DO NOT CONFORM TO THE REQUIREMENTS OF FMVSS NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT." THE VERTICAL HEAD LAMP ADJUSTING

Consequence

DRIVER VISIBILITY MAY BE IMPAIRED INCREASING THE RISK OF A CRASH.

Remedy

OWNERS WILL BE PROVIDED WITH AN OWNER'S MANUAL INSERT CONTAINING INSTRUCTIONS FOR OPTICALLY AIMING T

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

NHTSA #98V10200015/05/1998Component: EXTERIOR LIGHTING:HEADLIGHTS

VEHICLE DESCRIPTION: PASSENGER VEHICLES. THE OWNER MANUALS DO NOT CONTAIN THE REQUIREMENT INFORMATION PERTAINING TO THE VEHICLE HEADLAMP AIMING DEVICE. THIS DOES NOT COMPLY WITH REQUIREMENTS OF FMV

Consequence

IF THE HEADLAMP ASSEMBLIES ARE REPLACED, CUSTOMERS MAY NOT BE ABLE TO PROPERLY AIM THE HEADLIGHTS.

Remedy

OWNERS WILL BE MAILED AN OWNER MANUAL'S INSERT WHICH CONTAINS THE APPROPRIATE INFORMATION.

TSB #10208027

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 #10171318

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 #10246631

Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules

TSB #10023171

ABS PUMP RUNNING WHEN NOT NEEDED. *NJ

TSB #10018133

TIE ROD SPECIFICATIONS REVISED. GM TECH LINK. *TT

TSB #10017568

INTERMITTENT CHUGGLE OR FISHBITE ON LIGHT ACCELERATION OR A HIGHWAY SPEEDS WITH NO DIAGNOSTIC TROUBLE CODES (DTCS). *TT

TSB #10017515

REVISED OUTER TIE ROD END NUT TIGHTENING SPECIFICATION/TIE ROD END JAM NUT TIGHTENING SPECIFICATION ADDED. *TT

TSB #10016464

WIRE HARNESS MAY BE STRETCHED, OR THE PCS MAY NOT BE ORIENTED IN THE SAME POSITION, AFTER INSTALLING A SERVICE REPLACEMENT VALVE BODY ASSEMBLY. GM TECH LINK. *TT

Showing the 8 most recent of 76 technical service bulletins on file with NHTSA.

19980630Component: AIR BAGS:FRONTALCrash reported2 injured

CONSUMER WAS INVOLVED IN A REAR END COLLISION AND WAS FORCED INTO ANOTHER VEHICLE IN WHICH NEITHER DRIVER OR PASSENGER SIDE AIR BAGS DEPLOYED, CAUSING INJURIES TO BOTH DRIVER AND PASSENGER. CONSUMER H

20161004Component: SERVICE BRAKESCrash reported1 injured

TL* THE CONTACT OWNED A 1998 BUICK CENTURY. WHILE THE VEHICLE WAS BEING OPERATED, THE BRAKES AND STEERING COLUMN SEIZED. AS A RESULT, THE VEHICLE WAS INVOLVED IN A FRONT END CRASH. THE VEHICLE WAS TOW

20161004Component: STEERINGCrash reported1 injured

TL* THE CONTACT OWNED A 1998 BUICK CENTURY. WHILE THE VEHICLE WAS BEING OPERATED, THE BRAKES AND STEERING COLUMN SEIZED. AS A RESULT, THE VEHICLE WAS INVOLVED IN A FRONT END CRASH. THE VEHICLE WAS TOW

20091214Component: AIR BAGSCrash reported1 injured

TL* THE CONTACT OWNS A 1998 BUICK CENTURY. WHILE ATTEMPTING TO MERGE ONTO A HIGHWAY SHE CRASHED INTO ANOTHER VEHICLE. SHE WAS HOSPITALIZED FOR INJURIES. NONE OF THE AIR BAG DEPLOYED. THE FAILURE AND C

20040520Component: AIR BAGS:FRONTALCrash reported1 injured

WHILE DRIVING 60 MPH, THE VEHICLE WAS HIT BY ANOTHER VEHICLE ON THE FRONT PASSENGER SIDE. THE CONSUMER STATED THAT BOTH FRONTAL AIR BAGS DID NOT DEPLOY UPON IMPACT. THE DRIVER SUSTAINED MINOR INJURIE

Showing the 5 most serious of 278 complaints filed with NHTSA.

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