1993 Buick Regal Service and Repair Manual

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Factory-Grade Data

1993 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

  • Gran Sport Sedan 4-Door
  • Custom Coupe 2-Door
  • Limited Coupe 2-Door
  • Custom Sedan 4-Door
  • Limited Sedan 4-Door
  • Gran Sport Coupe 2-Door

Engines covered

  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
  • 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

1993 Buick Regal Recalls & Complaints

NHTSA #95V15200008/08/1995Component: EXTERIOR LIGHTING

INCORRECT CLEAR FRONT SIDE MARKER BULBS WERE INSTALLED RATHER THAN AMBER BULBS. THIS DOES NOT CONFORM TO THE REQUIREMENTS OF FMVSS NO. 108, "LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT."

Consequence

CONSEQUENCE OF NON-COMPLIANCE: DURING ILLUMINATION, THE BULBS WILL SHOW CLEAR RATHER THAN AMBER AND

Remedy

DEALERS WILL REPLACE THE CLEAR BULBS WITH THE CORRECT AMBER BULBS.

TSB #10246631

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

TSB #619370

OWNERS OF SOME VEHICLES EQUIPPED WITH HYDRA-MATIC 3T40, 4T60, 4T60-E OR 4T65-E TRANSAXLES MAY COMMENT ON A GRINDING AND / OR GROWLING NOISE THAT IS NOTICEABLE WHEN STANDING IN PARK ON A HILL OR SLOPE WITH THE ENGINE RUNNING AND THE PARKING

TSB #615100

VOLUNTARY EMISSION CAMPAIGN INVOLVING THE EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VALVE REPLACEMENT AND, CONVERTIBLE ONLY, PROM REPLACEMENT. *TT

TSB #615073

SOME V6 ENGINES MAY, ON A VERY INFREQUENT BASIS, HAVE AN OIL ODOR CONDITION THAT IS GENERALLY ENCOUNTERED AFTER THE ENGINE'S OIL HAS BEEN CHANGED.TYPICALLY THE ODOR LASTS APPROXIMATELY 1000 MILES AFTER THE CHANGE OF OIL AND THEN DOES NOT RE

TSB #6089996

SOME VEHICLES EQUIPPED WITH HYDRA-MATIC 3T40, 4T60 OR 4T60-E TRANSXALES MAY COMMENT ON A GRINDING AND / OR GROWLING NOISE THAT IS NOTICEABLE WHEN IN PARK ON INCLINE. *TT

TSB #6088680

CUSTOMERS MAY COMPLAIN OF GRINDING / SCRAPING / GROANING NOISE FROM REAR SUSPENSION. *TT

TSB #603002

EVAPORATIVE EMISSION CANISTER PURGE SOLENOID VLAVE REPLACEMENT AND CONVERTIBLE ONLY, PROM REPLACEMENT. *YC

TSB #602746

VOLUNTARY EMISSION RECALL CAMPAIGN - EVAPORATIVE EMISSION CONISTER PURGE SOLENOID VALVE REPLACEMENT AND, CONVERTIBLE ONLY, PROM REPLACEMENT. *YC

Showing the 8 most recent of 22 technical service bulletins on file with NHTSA.

19960416Component: SEATS:FRONT ASSEMBLY:RECLINERCrash reported3 injured

DURING REAR END COLLISION, DRIVER'S SEATBACK REST COLLAPSED. *AK

19961112Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported2 injured

POOR ABS BRAKE PERFORMANCE, THE PEDAL WENT TO THE FLOOR AND COMPLETE BRAKE FAILURE WAS EXPERIENCED WHICH RESULTED IN AN ACCIDENT. *AK CONSUMER TESTED BRAKES AT HOME AND BRAKES WNET ALMOST TO THE FL

19961204Component: VEHICLE SPEED CONTROLCrash reported

UPON PLACING TRANSMISSION INTO DRIVE WITH FOOT ON BRAKE PEDAL, SUDDENLY ENGINE SURGE THEN ACCELERATED OUT OF CONTROL, RESULTING IN A 4 CAR ACCIDENT,

19960719Component: VEHICLE SPEED CONTROLCrash reported

UPON PLACING TRANSMISSION INTO DRIVE WITH FOOT ON BRAKE PEDAL, SUDDENLY ENGINE SURGED THEN ACCELERATED OUT OF CONTROL, RESULTING IN MULTI CAR ACCIDENT. *AK

19960719Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported

UPON PLACING TRANSMISSION INTO DRIVE WITH FOOT ON BRAKE PEDAL, SUDDENLY ENGINE SURGED THEN ACCELERATED OUT OF CONTROL, RESULTING IN MULTI CAR ACCIDENT. *AK

Showing the 5 most serious of 118 complaints filed with NHTSA.

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