1984 Buick Regal Service and Repair Manual

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Factory-Grade Data

1984 Buick Regal 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

  • Grand National Coupe 2-Door
  • Base Sedan 4-Door
  • T-Type Coupe 2-Door
  • Limited Coupe 2-Door
  • Limited Sedan 4-Door
  • Base Coupe 2-Door

Engines covered

  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Turbocharged
  • 4.1L 252Cu. In. V6 GAS OHV Naturally Aspirated
  • 5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated
  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
  • 4.3L 260Cu. In. V6 DIESEL 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

1984 Buick Regal Recalls & Complaints

NHTSA #85V04900029/04/1985Component: STRUCTURE:BODY:BUMPERS

THE REAR BUMPER MAY FRACTURE DURING A REAR END COLLISION, PUNCTURE THE FUEL TANK, AND CAUSE A FUEL LEAK.

Remedy

REPLACE THE REAR BUMPER BRACKETS AND THE "L" SHAPED REINFORCEMENT WITH A "U" SHAPED FULL R

NHTSA #84V01100006/02/1984Component: SEATS:FRONT ASSEMBLY:RECLINER

SOME VEHICLES HAVE BUCKET SEAT BACK LOCKS THAT DO NOT CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD 207, ANCHORAGE OF SEATS. IN EVENT OF A CRASH, THE SEAT BACK LOCK MAY NOT FUNCTION.

Remedy

INSPECTION OF SEAT BACK LOCKS WILL BE PERFORMED. LOCKS THAT HAVE BENT, BROKEN OR MISSING HOOKS WILL

NHTSA #85V02400005/03/1985Component: STEERING:GEAR BOX (OTHER THAN RACK AND PINION)

ONE OF THE THREE STEERING GEAR TO FRAME BOLTS MAY NOT HAVE BEEN TIGHTENED TO THE REQUIRED SPECIFICATION.

Remedy

TIGHTEN THE STEERING GEAR TO FRAME BOLTS.

No service bulletins No technical service bulletins on file with NHTSA for the 1984 Buick Regal.
19951018Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINEFire reported

ENGINE COMPARTMENT FIRE. (OHIO STATE POLICE REPORT) *SD

19950207Component: SEATS1 injured

DRIVER' SEAT BACK FAILED TO HOLD DURING ACCIDENT, FORCING DRIVER INTO STEERING WHEEL/WINDSHIELD, RESULTING IN INJURY. *SKDD

20020410Component: STRUCTURE

ENGINE FELL OUT WHILE TRAVELING ON HIGHWAY. CRADDLE BOLTS ATTACHED TO VEHICLE WERE ROTTEN.*AK

20000901Component: ELECTRICAL SYSTEM:12V/24V/48V BATTERY

DELCO BATTERY IS LEAKING ACID. NLM

20000504Component: TIRES:TREAD/BELT

CONSUMER BOUGHT FOUR NEW TIRES FROM A COMPANY. THE TWO FRONT TIRES' TREAD WAS SPLITTING ON THE OUTSIDE OF THE TIRES. *AK

Showing the 5 most serious of 6 complaints filed with NHTSA.

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