1989 Buick LeSabre Service and Repair Manual

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Factory-Grade Data

1989 Buick LeSabre 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

  • Estate Wagon Wagon 4-Door
  • Custom Coupe 2-Door
  • Limited Coupe 2-Door
  • Custom Sedan 4-Door
  • Limited Sedan 4-Door
  • Base Wagon 4-Door
  • Base Coupe 2-Door

Engines covered

  • 5.0L 307Cu. In. V8 GAS OHV Naturally Aspirated
  • 3.8L 3800CC 231Cu. 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

1989 Buick LeSabre Recalls & Complaints

NHTSA #88V14300029/08/1988Component: FUEL SYSTEM, GASOLINE:STORAGE

FUEL ROLLOVER VALVE ASSEMBLY MAY NOT HAVE BEEN INSTALLED.

Consequence

IN EVENT OF AN ACCIDENT IN WHICH VEHICLE BECOMES INVERTEDMISSING VALVE COULD ALLOW FUEL SPILLAGE IN

Remedy

REPLACE FUEL SENDER AND PUMP ASSEMBLY.

NHTSA #89V18800007/11/1989Component: STRUCTURE:FRAME AND MEMBERS

VEHICLES MAY HAVE DISCREPANT WELDS IN THE LEFT REAR ROCKER PANEL WHICH CAN CAUSE DEFORMATION OF THE PANEL.

Consequence

INCREASED DEFORMATION OF THE LEFT REAR ROCKER PANELCAN CAUSE THE LEFT REAR SEAT BELT ANCHORAGE NOT T

Remedy

INSTALL A REINFORCEMENT KIT.

No service bulletins No technical service bulletins on file with NHTSA for the 1989 Buick LeSabre.
20000412Component: TIRESCrash reported

WHILE TRAVELING AT HIGHWAY SPEED OF 55 MPH, VEHICLE HYDROPLANED, CAME DOWN INTO A CONCRETE PILLAR ONTO GUARDRAIL ON PASSENGER'S SIDE, AND BOUNCED OFF INTO THE MEDIUM STRIP. INSURANCE NOTIFIED. *AK

19960214Component: VEHICLE SPEED CONTROLCrash reported

WHEN VEHICLE WAS STANDING STILL THE ACCELERATOR WENT TO FULL THROTTLE AND CAUSED ACCIDENT. PLEASE DESCRIBE DETAILS. TT

20060428Component: ENGINE AND ENGINE COOLINGFire reported

1989 BUICK LESABRE ENGINE COMPARTMENT CAUGHT ON FIRE. *TS *JB

19960214Component: FUEL SYSTEM, GASOLINEFire reported

WHILE DRIVING, NOTICED SMOKE, THEN FLAMES COMING FROM DASH, RESULT VEHICLE CAUGHT FIRE, FOR NO APPARENT REASON. TT

19951205Component: SEAT BELTS:FRONT:WEBBING1 injured

SHOULDER BELT FAILED TO SECURE DRIVER, CAUSING INJURY DURING ACCIDENT. *SD

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

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