1990 Cadillac Brougham Service and Repair Manual

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Factory-Grade Data

1990 Cadillac Brougham 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
  • d'Elegance Sedan 4-Door

Engines covered

  • 5.7L 350Cu. In. V8 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

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Vehicle Safety Data

1990 Cadillac Brougham Recalls & Complaints

NHTSA #90V13400027/07/1990Component: EQUIPMENT:OTHER:LABELS

GROSS VEHICLE WEIGHT RATINGS AND TIRE INFORMATION MAY BE INCORRECT ON LABELS.

Consequence

VEHICLES WOULD NOT COMPLY WITH 49 CFR PART 567.

Remedy

INSTALL REVISED CERTIFICATION LABELS.

NHTSA #90V13300027/07/1990Component: EQUIPMENT:OTHER:LABELS

TIRE PLACARD MAY CONTAIN INCORRECT GROSS VEHICLE WEIGHT RATINGS AND TIRE INFORMATION.

Consequence

LIMOUSINES WOULD NOT COMPLY WITH FMVSS 110 AND CONSUMERMIGHT UNKNOWINGLY OVERLOAD THE VEHICLE BECAUS

Remedy

INSTALL REVISED TIRE PLACARDS.

NHTSA #91V10100014/06/1991Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS
Consequence

STOPPING DISTANCE REQUIREMENTS OF FMVSS 105 ARE NOT METWITH POWER BRAKING ASSIST UNIT INOPERATIVE.

Remedy

REPLACE ORIGINAL 1" REAR WHEEL BRAKE CYLINDER WITH A 1 1/16" CYLINDER.

NHTSA #91V10000014/06/1991Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS
Consequence

STOPPING DISTANCE REQUIREMENTS OF FMVSS 105 ARE NOT METWITH POWER BRAKING ASSIST UNIT INOPERATIVE.

Remedy

REPLACE ORIGINAL 1" REAR WHEEL BRAKE CYLINDER WITH A 1 1/16" CYLINDER.

NHTSA #91V09900014/06/1991Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS

REAR WHEEL BRAKE CYLINDERS ARE TOO SMALL TO ALLOW FOR PROPER BRAKING.

Consequence

STOPPING DISTANCE REQUIREMENTS OF FMVSS 105 ARE NOT METWITH POWER BRAKING ASSIST UNIT INOPERATIVE.

Remedy

REPLACE ORIGINAL 1" REAR WHEEL BRAKE CYLINDER WITH A 1 1/16" CYLINDER.

NHTSA #91V09600014/06/1991Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS

REAR WHEEL BRAKE CYLINDERS ARE TOO SMALL TO ALLOW FOR PROPER BRAKING.

Consequence

STOPPING DISTANCE REQUIREMENTS OF FMVSS 105 ARE NOT METWITH POWER BRAKING ASSIST UNIT INOPERATIVE.

Remedy

REPLACE ORIGINAL 1" REAR WHEEL BRAKE CYLINDER WITH A 1 1/16" CYLINDER.

NHTSA #91V09300014/06/1991Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS

REAR WHEEL BRAKE CYLINDERS ARE TOO SMALL TO ALLOW FOR PROPER BRAKING.

Consequence

STOPPING DISTANCE REQUIREMENTS OF FMVSS 105 ARE NOT METWITH POWER ASSIST BRAKING UNITS INOPERATIVE.

Remedy

REPLACE ORIGINAL 1" REAR WHEEL BRAKE CYLINDER WITH A 1 1/16" CYLINDER.

NHTSA #91V01100011/01/1991Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM

LIMOUSINE FAILED TO MEET STOPPING DISTANCE REQUIREMENTS OF FMVSS 105.

Consequence

INCREASED STOPPING DISTANCE COULD RESULT IN AN ACCIDENT;VEHICLES DO NOT COMPLY WITH FMVSS 105.

Remedy

REPLACE ORIGINAL REAR WHEEL BRAKE CYLINDER WITH A LARGER CYLINDER.

NHTSA #91V09200010/06/1991Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM:WHEEL CYLINDERS

REAR WHEEL BRAKE CYLINDERS TOO SMALL TO ALLOW FOR PROPER BRAKING.

Consequence

STOPPING DISTANCE REQUIREMENTS OF FMVSS 571 ARE NOT METWITH POWER ASSIST BRAKING UNIT INOPERATIVE.

Remedy

REPLACE ORIGINAL 1" REAR WHEEL BRAKE CYLINDER WITH A 1 1/16" CYLINDER.

No service bulletins No technical service bulletins on file with NHTSA for the 1990 Cadillac Brougham.
19951031Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported2 injured

ABS: BRAKES LOCKED UP, CAUSED AN ACCIDENT, HIT GUARDRAIL DURING RAINY WEATHER. TT *JB

19951213Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported1 injured

DURING BRAKE APPLICATION NOTED HESITATION BEFORE COMPUTER ENGAGES CAUSING VEHICLE TO FLOAT. TT UPON IMPACT THE SHOULDER STRAPS SNAPPED CAUSING CONUSMER TO SUFFER INJURIES.*JB

19951213Component: SEAT BELTS:FRONT:ANCHORAGECrash reported1 injured

DURING BRAKE APPLICATION NOTED HESITATION BEFORE COMPUTER ENGAGES CAUSING VEHICLE TO FLOAT. TT UPON IMPACT THE SHOULDER STRAPS SNAPPED CAUSING CONUSMER TO SUFFER INJURIES.*JB

19950822Component: SEAT BELTS:FRONT:ANCHORAGECrash reported1 injured

SEAT BELTS DID NOT WORK WHEN CUSTOMER WAS IN ACCIDENT. TT

19951019Component: SEATS:FRONT ASSEMBLY:POWER ADJUSTFire reported

ELECTRICAL SYSTEM FIRE, POWER SEAT SWITCH CAUGHT FIRE ON TWO OCCASSIONS. TT *SLC

Showing the 5 most serious of 12 complaints filed with NHTSA.

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