1991 Buick Park Avenue Service and Repair Manual

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Covers all 1991 Park Avenue trims — Base Sedan 4-Door, Ultra Sedan 4-Door ·
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1991 Buick Park Avenue 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

  • Base Sedan 4-Door
  • Ultra Sedan 4-Door

Engines covered

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

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 #91V16700023/09/1991Component: PARKING BRAKE:CONVENTIONAL:MECHANICAL

WHEN APPLIED, THE PARKING BRAKE LEVER ASSEMBLY MAY RELEASE ONE OR MORE TEETH, REDUCING THE CABLE LOAD TO THE REAR BRAKES.

Consequence

DEPENDING ON THE EXTENT OF THE LEVER RELEASE AND ROADLEVEL. THE PARKING BRAKE MAY NOT HOLD THE VEHIC

Remedy

REPLACE PARKING BRAKE LEVER ASSEMBLY.

TSB #10246631

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

TSB #603085

SOME CUSTOMERS MAY COMMENT THAT THERE IS CORROSION ( RUST ) APPEARING ON THE LEFT AND /OR RIGHT ROCKER PANEL(S). *YC

TSB #602751

SOME CUSTOMERS MAY COMMENT THAT THE VEHICLE

TSB #601769

INFORMATION ON GROWLING NOISE IN TRANSAXLE DURING FIRST FOUR MINUTES AFTER START UP. *YC

TSB #54065

COMMENTS ON INOPERATIVE POWER DOOR LOCKS (FRONT AND/OR REAR DOORS).

TSB #52564

EXCESSIVE VIBRATION OF ELECTROCHROMIC INSIDE REARVIEW MIRROR. *TW

TSB #51497

COLD START RATTLE NOISE (DIAGNOSIS/SERVICE PROCEDURE). *TW

TSB #50571

COLD START RATTLE NOISE. *TW

Showing the 8 most recent of 11 technical service bulletins on file with NHTSA.

19980508Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported1 injured

WHEN COMING OUT OF A RAMP IN THE WAY DOWN, TRIED TO APPLY BRAKES AND STOP VEHICLE, BUT THE BRAKES DID NOT RESPOND, REAR ENDING ANOTHER VEHICLE IN FRONT. DEALER NOR MANUFACTURER WERE CONTACTED. *AK

19991230Component: AIR BAGS:FRONTALCrash reported

DRIVER HIT A DEER HEAD-ON. BOTH AIRBAG'S EXPERIENCED NO DEPLOYMENT WHICH COULD HAVE RESULTED IN INJURY. NO INJURIES WERE SUSTAINED. *AK *YC

19980303Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported

ABS BRAKES; WHEN APPLYING THE BRAKES IN NORMAL CONDITIONS PEDAL WENT TO THE FLOOR, AND THE BRAKES FAILED TO STOP THE VEHICLE, CAUSING AN ACCIDENT. *AK

19970830Component: SERVICE BRAKES, HYDRAULICCrash reported

BRAKE FAILURE.

19970401Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported

FAILURE OF ABS BRAKE SYSTEM; ALSO, MASTER CYLINDER FAILED, APPLIED BRAKES AND VEHICLE EXPERIENCED EXTENDED STOPPING DISTANCE, IMPACT 6:00 POSITION. *AK

Showing the 5 most serious of 134 complaints filed with NHTSA.

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