🏷️ Basic Information

Make:

Citroën

Model:

GS / GSA

Year:

1977

Chassis Code:

VC (GS), VD (GSA)

Generation Identifier:

First Generation (GS) / Extended (GSA)

👋 Introduction

Target Audience:

Owners seeking to perform their own repairs, independent mechanics, and enthusiasts of classic Citroën vehicles.

Value Proposition:

Empowers owners with the knowledge to save money on repairs and maintain their vehicle to a high standard, offering comprehensive coverage typically found only in professional workshop manuals.

Key Advantage:

Enables independent diagnosis and repair, fostering a deeper understanding and appreciation of the vehicle's unique engineering.

Accessibility:

Instant download format for immediate access to critical repair information.

📋 Manual Details

Primary Coverage:

All aspects of repair, maintenance, and troubleshooting

Specific Systems Covered:

Engine, Transmission, Brakes, Electrical System, Wiring Diagrams, Suspension, Steering, Cooling System, Fuel System, Emission System, Engine Control System, Chassis, Body, Restraint System, Axle, General Maintenance, Troubleshooting, Periodic Lubrication

Estimated Page Count:

Comprehensive (exact count not specified, but implied extensive coverage)

Type:

Service and Repair Manual

Scope:

Comprehensive Workshop Manual / Service Manual.

Language:

English

Format:

PDF Download

Searchability:

Likely searchable text within the PDF, allowing for quick information retrieval.

📖 Manual Coverage

Engine Service Repair:

Detailed procedures for disassembly, assembly, repair, and overhaul of all engine components.

Transmission Service Repair:

Comprehensive guides for manual and Hydragas automatic transmission maintenance and repair.

Brake System:

In-depth coverage of hydraulic system, disc and drum brake components, and hydraulic fluid specifications.

Electrical System:

Complete electrical diagnostics, component testing, and repair procedures.

Wiring Diagrams:

High-quality, detailed wiring diagrams for all vehicle electrical circuits.

Suspension:

Detailed information on the unique Hydropneumatic suspension system, including component replacement and pressure adjustments.

Steering:

Service and repair procedures for the power-assisted steering system.

Cooling System:

Maintenance and repair of the air-cooled or liquid-cooled engine cooling systems.

Fuel Injection Fuel System:

Diagnosis and repair of fuel delivery, carburetion (or early injection systems), and fuel tank components.

Emission System:

Procedures for servicing emission control components and meeting regulatory standards.

Chassis Body:

Information on body panel repairs, structural integrity, and chassis maintenance.

Restraint System:

Details on seat belts and any early forms of passive restraint systems.

Axle:

Service and repair of front and rear axles, including CV joints.

General Maintenance:

Routine checks, fluid changes, filter replacements, and lubrication schedules.

Troubleshooting:

Diagnostic procedures for identifying and resolving common and complex issues.

Disassembly Reassembly:

Step-by-step instructions for taking apart and putting back together vehicle components and systems.

Refurbish Renovate:

Guidance on restoring components and systems to optimal working condition.

Engine Control System:

Diagnostics and repair of ignition system, emission control devices, and any early engine management components.

Periodic Lubrication:

Detailed schedule and specification for lubrication points throughout the vehicle.

Wheel Alignment And Balancing:

Specifications and procedures for ensuring correct wheel alignment and tire balancing.

Chassis Component Replacement:

Instructions for replacing wear items like ball joints, tie rods, and bushings.

Depth:

Comprehensive, suitable for DIY enthusiasts and professional mechanics alike, covering basic to advanced repairs.

Troubleshooting Approach:

Systematic diagnostic trees and symptom-based troubleshooting guides.

📊 Manual Specifications

Format:

PDF

Software Requirements:

Adobe PDF Reader, WinZip

Compatibility:

All versions of Windows & Mac

Quality:

Digital download with clarity suitable for printing and on-screen viewing.

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Air-cooled flat-four (GS/GSA models typically used variations of the 'G' series engine)

Displacement:

Typically 1015cc or 1220cc for GS models; GSA introduced 1299cc variants.

Horsepower:

Varies by engine, e.g., GS 1015cc approx. 56 hp, GS 1220cc approx. 60 hp, GSA 1299cc approx. 65 hp (DIN).

Torque:

Varies by engine, e.g., GS 1220cc approx. 98 Nm @ 3000 rpm.

Fuel Delivery:

Carburetor (e.g., Solex, Weber) for most models; some later GSA variants may have had early fuel injection.

Cooling Method:

Air-cooled (most GS models); some later GSA models may have introduced liquid cooling, but air-cooling is characteristic of the GS era.

🔧 Transmission

Type:

4-speed manual transaxle (typically)

Type:

Hydragas automatic transmission (Citroën's proprietary system, similar in concept to Hydropneumatic suspension but applied to transmission control)

Drive Layout:

Front-wheel drive

📐 Dimensions

Body Styles:

2-door sedan, 4-door sedan, Estate (break)

Curb Weight:

Approx. 970 kg - 1070 kg, depending on body style and engine.

🛡️ Safety Features

Seatbelts:

Standard front seat belts; optional rear seat belts.

💡 Technology Features

Radio:

Optional AM/FM radio, often with basic speaker setup.

Lighting:

Halogen headlamps; aerodynamic headlight fairings on some models.

Interior Features:

Unique dashboard layout with rotary controls and 'planète' style instruments.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000-10,000 km or 6-12 months, depending on usage and oil type. Manual will specify precise intervals.

Spark Plug Replacement:

Recommended every 20,000-40,000 km. Manual will provide specific types and gap settings.

Engine Oil Grade:

Likely 20W-50 or 10W-40, depending on climate. Manual will specify exact API/ACEA ratings.

Brake Fluid:

DOT 3 or DOT 4 hydraulic fluid. Manual will specify type and replacement interval.

Hydropneumatic Fluid:

Citroën LHS 2 or mineral oil based fluid (depending on specific system evolution). Manual critical for correct fluid type.

Hydropneumatic Suspension Leaks:

Common issue for aged seals and hoses in the suspension system.

Rust Perforation:

Can be an issue in certain climates due to the age of the vehicles.

Electrical Gremlins:

Older wiring harnesses and connectors can be prone to issues.

Engine Cooling Efficiency:

Air-cooled engines require proper airflow; maintenance of cooling fins and shrouds is important.

📚 Vehicle History

Citroen Innovation:

Citroën's reputation for avant-garde engineering, evident in the GS/GSA's unique suspension and aerodynamic design.

Gs To Gsa:

The GSA was an evolution of the GS, introduced in 1979, featuring updated styling (notably the front end), improved interior, and often larger engines. The 1977 model year falls within the original GS production run.

Production Period:

Citroën GS: 1970–1986; Citroën GSA: 1979–1986

🏆 Awards & Recognition

European Car Of The Year:

Citroën GS was voted European Car of the Year in 1971.

📄 Vehicle Specs

Engine Configuration:

Horizontally opposed, air-cooled, OHV (Overhead Valve) configuration for most models.

Suspension Type:

Hydropneumatic suspension (front and rear) with self-leveling capability and variable ride height.

Front Brake Type:

Discs

Rear Brake Type:

Drums

Wheel Bolt Pattern:

Typically 3x130mm or 4x130mm, depending on specific model/year.