🏷️ Basic Information

Make:

Cadillac

Model:

Brougham

Year:

1991

Platform:

C-Body

👋 Introduction

Positioning:

The 1991 Cadillac Brougham represented the pinnacle of American luxury sedans, targeting affluent buyers who prioritized comfort, a smooth ride, and a prestigious image. It was a car designed for effortless cruising and refined transport.

Competitors:

Competed against other large luxury sedans of the era, including Lincoln Town Car and certain European luxury marques focusing on similar attributes of size and comfort.

Manual Benefits:

Provides vehicle-specific, dealership-level repair information in a convenient, searchable PDF format. Offers complete A-Z coverage for all maintenance, diagnostics, and repair procedures, empowering owners to perform their own servicing or understand their vehicle better.

Manual Type Advantage:

This is not generic repair information; it is vehicle-specific, representing the exact same content used by dealership technicians for maintenance, service, diagnosis, and repair.

📋 Manual Details

Primary Coverage:

All models and all repairs A-Z

Body And Paint:

Includes procedures for body panel alignment, minor dent repair, and painting specifications where applicable within a service manual context.

Estimated Page Count:

Varies by specific OEM manual; this PDF aggregates comprehensive data. Typical factory service manuals for this era are extensive, often exceeding 1500 pages.

Type:

Factory Service and Repair Manual

Source:

Original Equipment Manufacturer (OEM) factory manual data

Language:

English

Digital Format:

PDF

Download Speed:

Fast Download

📖 Manual Coverage

Powertrain:

Engine, Fuel Service Specifications, Emission Control, Intake/Exhaust/Cooling, Lube, Ignition, Starting/Charging, Automatic Transmission, Clutch, Manual Transmission (if applicable for specific variants), Transfer/Propeller Shaft, Drive Shaft, Differential, Axle/Suspension

Chassis:

Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering

Electrical And Accessories:

Air Conditioning, Supplemental Restraint System (SRS), Seat Belt, Engine Immobilizer (if equipped), Cruise Control, Wiper & Washer, Door Lock, Meter/Audio/Visual, Horn, Windshield/Glass/Mirror, Instrument Panel, Exterior & Interior Electrical, Multiplex/CAN Communication

Body And Interior:

Engine Hood/Door, Exterior & Interior trim and components, Seat adjustments and mechanisms, Instrument Panel removal and service, Windshield/Glass/Mirror replacement and adjustment.

Climate Control:

Air Conditioning system (refrigerant, compressor, evaporator, condenser), Heater system (heater core, blower motor, control modules).

Maintenance:

Scheduled maintenance, fluid checks and changes, filter replacements, lubrication

Diagnostics:

Troubleshooting guides, symptom analysis, diagnostic trouble codes (DTCs), testing procedures for all major systems

Repair And Rebuild:

Step-by-step repair instructions for all components, detailed disassembly and reassembly procedures, torque specifications, alignment procedures

Wiring Schematics:

Complete and detailed wiring schematics for all electrical systems, including power distribution, lighting, sensors, actuators, and comfort features.

Component Replacement:

Detailed instructions for replacing all major and minor components, including engine, transmission, suspension parts, brake assemblies, and interior/exterior trim.

Troubleshooting Charts:

Includes diagnostic flowcharts and symptom-based troubleshooting tables to quickly identify and resolve issues.

Depth:

Factory-level, comprehensive from basic maintenance to in-depth engine and transmission rebuilds, including electrical system diagnostics and bodywork repairs.

Electrical Diagnostics:

Advanced electrical diagnostics including testing of sensors, actuators, control modules, and wiring harnesses, supported by detailed schematics.

📊 Manual Specifications

Compatibility:

Windows Vista (32/64-bit), XP, ME, 98, NT, 2000, and Mac OS.

Software Requirements:

Adobe PDF Reader and WinZip (or equivalent decompression software).

Searchability:

Searchable text within the PDF allows for quick access to specific topics and keywords.

Printability:

All pages are printable with high clarity and detail, allowing for enlarged image printing.

Binding:

Digital (PDF) - no physical binding.

Paper Type Simulated:

N/A (Digital format). Printable pages can be printed on any standard paper type.

⚙️ Engine Specifications

Engine Options:

Primarily the 5.0L (305 cu in) V8, often referred to as the 'HT 500' or L03 engine. Some export or specialized models might have featured other V8 variants.

Horsepower:

Approx. 140-165 hp (specific output varies slightly by year and configuration)

Torque:

Approx. 230-255 lb-ft

Fuel Delivery:

Multi-Port Fuel Injection (MPFI)

Emission Control:

Features a catalytic converter, EGR system, and oxygen sensors to meet emission standards of the time. Manual covers diagnosis and repair of these systems.

Engine Architecture:

Overhead Valve (OHV) V8 engine known for its torque and smooth operation, designed for comfortable cruising.

🔧 Transmission

Transmission Type:

4-speed automatic overdrive (THM-200-4R or updated variant)

Optional Transmission Type:

Not commonly offered; automatic was standard for this luxury-oriented model.

Transmission Features:

Designed for smooth shifts and fuel economy, electronically controlled for optimal performance.

📐 Dimensions

Overall Length:

Approx. 214 inches

Wheelbase:

Approx. 115.8 inches

Curb Weight:

Approx. 4000-4300 lbs (depending on options)

🛡️ Safety Features

NHTSA Ratings:

Specific NHTSA ratings for 1991 models are difficult to pinpoint in modern databases, but the Brougham was built to meet all contemporary safety standards of its era.

Active Safety:

Four-wheel disc brakes (standard on most models), Anti-lock Braking System (ABS) available.

Passive Safety:

Seat belts (front and rear), padded interior surfaces, energy-absorbing steering column.

💡 Technology Features

Audio System:

Factory AM/FM stereo with cassette player, often with optional premium sound systems and graphic equalizers. Digital climate control was a premium feature.

Assistance Features:

Anti-lock Braking System (ABS) was an available option. Cruise control was standard or widely available.

Connectivity Features:

Limited by modern standards; primarily focused on analog vehicle systems and basic electrical functions. Some advanced models might have featured early multiplexed wiring systems.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000 to 5,000 miles or 3 to 6 months, depending on driving conditions and oil type used. Refer to specific manual for exact recommendations.

Engine Oil:

API SG, SG/CD, SH, SH/CD or equivalent, SAE 5W-30 or 10W-30 (refer to manual for specific temperature ranges and API classifications).

Transmission Fluid:

Dexron II or Dexron III automatic transmission fluid.

Coolant:

Ethylene glycol-based coolant with a 50/50 mix of antifreeze and distilled water, meeting GM 1825M specifications.

Brake Fluid:

DOT 3 (or specified equivalent) brake fluid.

Power Steering Fluid:

GM Power Steering Fluid (P/N 1050001) or equivalent.

Coolant Capacity:

Approx. 16-18 quarts (varies by engine and cooling system configuration). Consult manual for exact capacity.

Common Problems:

Potential issues include aging suspension components (bushings, ball joints), electronic module failures (e.g., BCM, climate control), fuel injector clogging, exhaust manifold leaks, and minor electrical gremlins typical of vehicles from this era. Power window regulators and door lock actuators can also wear out.

📚 Vehicle History

Cadillac Legacy:

Cadillac, as a luxury division of General Motors, has a long history of producing large, comfortable, and technologically advanced American automobiles. The Brougham nameplate has been used for various flagship models over the decades.

Brougham Lineage:

The 1991 Brougham was part of the last generation of Cadillac's rear-wheel-drive C-Body sedans, a lineage that stretched back to the original Brougham of the 1950s and evolved through models like the Fleetwood Brougham. This generation emphasized classic styling and a traditional luxury car feel.

Cultural Impact:

The 1991 Brougham is remembered as a quintessential example of a large, American luxury sedan, often associated with a more traditional, opulent automotive era. It represented Cadillac's focus on comfort and refinement.

Production Period:

The Brougham model as it existed in this form was produced from 1987 to 1992, with the 1991 model being a late iteration of this design.