Vehicle Segment:
Compact Family Car
Design Philosophy:
Innovative, aerodynamic, and practical design characteristic of Citroen.
Key Competitors:
Renault 12, Peugeot 304/305, Ford Escort, Fiat 128, Opel Kadett.
Hydropneumatic Suspension:
Self-leveling hydropneumatic suspension providing exceptional ride comfort and handling.
Aerodynamic Styling:
Sleek, low-drag coefficient bodywork for improved fuel efficiency and stability.
Interior Space:
Generous cabin space and a practical hatchback design for its class.
Primary Coverage:
Citroen GS & GSA Models
Specific Model Years:
1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985
Estimated Page Count:
Comprehensive (Exact number not specified, but described as 'very detailed' and 'full')
Manual Classification:
Full Service Repair Manual
Target Audience:
Professional Technicians and DIY Mechanics
Delivery Method:
Instant Download
Engine Overhaul:
Detailed procedures for repair, rebuilding, and refurbishment of all engine variants.
Transmission Service:
Coverage for manual and potentially automatic transmissions (if applicable to the range), including repair and adjustment.
Suspension System:
In-depth explanation of Citroen's hydropneumatic suspension, including maintenance, repairs, and adjustments.
Braking System:
Detailed coverage of hydraulic and brake component servicing, including discs and drums.
Electrical System:
Comprehensive diagnostics, troubleshooting, and repair procedures, integrated with detailed wiring diagrams.
Fuel System:
Repair and maintenance of carburettor (or potentially early injection) systems, fuel lines, and pump.
Cooling System:
Service procedures for the engine cooling system, including radiator and fan operation.
Exhaust System:
Information on exhaust system components, maintenance, and replacement.
Body And Chassis:
Procedures for bodywork, panel repair, and chassis maintenance.
Steering System:
Maintenance and repair of the steering mechanism.
Body Panel Alignment:
Information on door, bonnet, and tailgate fitment and adjustment.
Lighting System:
Headlights, taillights, interior lighting servicing and repair.
Routine Maintenance:
Includes service schedules, fluid changes, filter replacements, and general upkeep.
Diagnostic Procedures:
Detailed fault finding and troubleshooting for mechanical and electrical issues.
Repair Procedures:
Step-by-step guidance for virtually all repair tasks, from minor adjustments to major overhauls.
Rebuilding Procedures:
Comprehensive instructions for engine, transmission, and other component rebuilds.
Refurbishment And Restoration:
Guidance suitable for bringing vehicles back to original or excellent condition.
Electrical Troubleshooting:
Specific focus on diagnosing and repairing electrical faults with integrated wiring diagrams.
Troubleshooting Guides:
Specific sections dedicated to identifying and resolving common problems.
Wiring Diagrams:
Detailed electrical schematics for comprehensive diagnosis and repair of the electrical system.
Component Disassembly Reassembly:
Step-by-step guidance for removing, servicing, and reinstalling individual parts.
Depth Level:
Professional Technician Level
Applicability For Diy:
Suitable for experienced DIY mechanics due to detailed step-by-step instructions.
Engine Type Gs:
Air-cooled, flat-four (boxer) engine
Engine Displacement Gs:
1015 cc (early GS), 1222 cc (later GS), 1299 cc (GS Club/Pallas)
Engine Type Gsa:
Air-cooled, flat-four (boxer) engine
Engine Displacement Gsa:
1299 cc, 1360 cc (GSA X1/X3)
Horsepower Gs 1015Cc:
Approx. 56 hp (DIN)
Horsepower Gs 1222Cc:
Approx. 60 hp (DIN)
Horsepower Gs 1299Cc:
Approx. 65 hp (DIN)
Horsepower Gsa 1299Cc:
Approx. 65 hp (DIN)
Horsepower Gsa 1360Cc:
Approx. 71 hp (DIN)
Fuel Induction Early:
Solex twin-choke carburettor (e.g., 34 PICS)
Fuel Induction Later:
Solex or Zenith twin-choke carburettor
Fuel Type:
Unleaded Petrol (for later models, leaded for earlier)
Crash Test Era:
Vehicles from this era predated standardized modern crash testing (e.g., Euro NCAP).
Braking System Type:
Front disc brakes, rear drum brakes.
Suspension Stability:
Hydropneumatic suspension contributes to stable handling and road holding.
Seatbelts:
Standard fitment (often front only initially, later models with rear).
Oil Change Interval:
Typically every 5,000-7,500 km (3,000-4,500 miles) or annually, depending on usage and oil specification.
Major Service Interval:
Every 20,000-30,000 km (12,000-18,000 miles) covering more in-depth checks and component servicing.
Engine Oil Grade:
Refer to manual for specific grades, typically SAE 20W-50 or similar for air-cooled engines of the era.
Hydropneumatic Fluid:
LHM (Liquide Hydraulique Minéral) - specific Citroen specification.
Brake Fluid:
DOT 3 or DOT 4 (for brake system, distinct from suspension fluid).
Hydropneumatic System Leaks:
Common for seals and hoses in the hydropneumatic system to degrade over time, causing fluid loss and ride height issues.
Carburetor Tuning:
Requires regular adjustment and cleaning due to the nature of twin-choke carburettors.
Rust And Corrosion:
A common concern for vehicles of this age, particularly around wheel arches, sills, and floor pans.
Electrical Connection Corrosion:
Older wiring looms and connectors can corrode, leading to intermittent electrical faults.
Engine Air Cooling Efficiency:
Overheating can occur in prolonged traffic or hot climates if cooling fins are blocked or the fan system is inefficient.
Citroen Innovation:
Citroen's reputation for engineering innovation, particularly in suspension and aerodynamics.
Gs Introduction:
Introduced in 1970 as a replacement for the Ami 8.
Gsa Introduction:
Facelifted GSA introduced in 1980 with revised interior, dashboard, and updated styling including a new tailgate.
Production Location:
France (primarily Rennes-sur-Vilaine)
Total Production Approx:
Over 1.8 million units (GS and GSA combined).
