1987 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
- Limited Coupe 2-Door
- GNX Coupe 2-Door
- Base Coupe 2-Door
Engines covered
- 3.8L 3800CC 231Cu. In. V6 GAS OHV Turbocharged
- 5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated
- 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
- 5.0L 307Cu. In. V8 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
MANUAL VALVE LINK IN THE TRANSMISSION MAY HAVE BEEN IMPROPERLY FORMED.
THE VALVE LINK COULD SEPARATE RESULTING IN A GEARSELECTION DIFFERENT FROM WHAT THE DRIVER SELECTS.
REPLACE THE MANUAL VALVE DETENT LEVER LINK.
THE DRIVERS SEAT BELT DID NOT RESTRAIN PASSENGER IN AN ACCIDENT. PLEASE DESCRIBE. *AK
DT: THE CONTACT STATED THERE WAS SUDDEN ACCELERATION WHILE DRIVING WITH THE CRUISE CONTROL ENGAGED. THE VEHICLE SUDDENLY ACCELERATED FORWARD AND STRUCK A TELEPHONE POLE. THERE WAS DAMAGE TO THE D
BRAKES AT TIMES TAKE EXCESSIVE EFFORT TO STOP CAR. HAS HAPPENED SEVERAL TIMES WITHOUT ANY WARNING AND WILL THEN WORK NORMAL AGAIN. THIS IS A TURBO REGAL EQUIPPED WITH A POWER MASTER BRAKE SYSTEM UNI
TL* THE CONTACT OWNS A 1987 BUICK REGAL. WHILE DRIVING APPROXIMATELY 40 MPH, THE BRAKE WARNING LIGHT ILLUMINATED AS THE BRAKES BECAME EXTREMELY RESISTANT AND DIFFICULT TO DEPRESS. THE VEHICLE WAS TOWE
Showing the 4 most serious of 28 complaints filed with NHTSA.
