Vehicle Segment:
Compact family car, known for its innovative design and ride comfort.
Key Competitors:
Renault 12, Peugeot 304, Ford Escort, Opel Kadett.
Design Innovation:
Aerodynamic body, distinctive 'anti-submarine' seating, and the unique hydropneumatic suspension system offering a supremely comfortable ride.
Practicality:
Hatchback design providing excellent practicality and cargo space for its class.
Affordability:
Provides an inexpensive way to maintain and repair the vehicle, saving costs compared to dealership servicing.
Intended Users:
Do-it-yourself enthusiasts, classic car owners, professional mechanics, and restoration specialists.
Applicable Years:
1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985
Manual Type:
Workshop Service Repair Manual
Printability:
Fully Printable
Interactivity:
Zoom IN/OUT enabled
Delivery Method:
Instant Download
Software Requirements:
Adobe PDF Reader & WinZip
Operating System Compatibility:
All Versions of Windows & Mac
Engine:
Comprehensive engine overhaul, tuning, fuel injection (if applicable), ignition system, cooling system, lubrication system, exhaust system.
Transmission:
Manual gearbox overhaul and repair, clutch system, drive shafts, differential.
Hydraulics:
Citroën's signature hydropneumatic suspension system (LHM), brake hydraulics, power steering hydraulics.
Brakes:
Front disc brakes, rear drum brakes, parking brake system, hydraulic system bleeding and repair.
Electrical System:
Wiring diagrams, lighting system, ignition system, charging system, starter motor, instrument panel, various sensors and actuators.
Suspension Steering:
Front and rear suspension components, shock absorbers, springs (coil), suspension height regulation, steering gear, steering column.
Body And Chassis:
Body panel repair, door mechanisms, window regulators, seals, underbody protection, chassis components, bumpers.
Comfort And Convenience:
HVAC system (heating and ventilation), interior trim, seating, door locks, power windows (if equipped).
Maintenance:
Routine maintenance tasks, oil changes, filter replacements, fluid checks and top-offs, lubrication points, tune-ups.
Troubleshooting:
Diagnostic charts, fault finding procedures for common and uncommon issues across all major systems.
Repair:
Detailed step-by-step repair instructions for all major components and systems, including component removal, overhaul, and reinstallation.
Diagnostics:
Specialized diagnostic procedures, including those related to the hydropneumatic system and electronic components (if applicable).
Specifications Data:
Torque values, clearances, adjustment procedures, fluid capacities, electrical specifications, diagnostic trouble codes (DTCs if applicable).
Depth Of Coverage:
Comprehensive, suitable for both novice DIY enthusiasts and experienced professional mechanics. Covers basic maintenance to complete engine and transmission rebuilds.
Visual Aids:
Detailed illustrations, diagrams, and wiring schematics to aid understanding and execution of repair procedures.
Engine Type:
Flat-four (Boxer) OHV, air-cooled
Displacement:
1222 cc (for early models)
Bore X Stroke:
80.5 mm x 60 mm (for 1222 cc)
Compression Ratio:
8.75:1 (typical)
Horsepower Max:
55-60 hp (DIN) for 1222 cc models
Torque Max:
90-95 Nm (DIN) for 1222 cc models
Fuel System:
Rochester or Solex downdraft carburetor (single or twin barrel depending on variant).
Engine Type:
Flat-four (Boxer) OHV, air-cooled
Displacement:
1299 cc (for GSA models)
Bore X Stroke:
83 mm x 60 mm (for 1299 cc)
Compression Ratio:
8.75:1 or higher (typical)
Horsepower Max:
65 hp (DIN) for 1299 cc models
Torque Max:
98 Nm (DIN) for 1299 cc models
Fuel System:
Rochester or Solex downdraft carburetor, later models may have Bosch LE-Jetronic fuel injection (GSA Club).
Historical Ratings:
As a vehicle from the 1970s-1980s, formal crash test ratings (like modern Euro NCAP or NHTSA) are not directly comparable or widely available in the same format. However, design features aimed at occupant safety were incorporated.
Braking:
Front disc brakes, rear drum brakes. Dual-circuit hydraulic system for improved safety.
Steering:
Rack and pinion steering with power assistance available on some models.
Body Structure:
Integrated safety cage, deformable front and rear crumple zones.
Interior:
'Anti-submarine' seating to prevent occupants from sliding under the seatbelt during a frontal impact, padded dashboard, collapsible steering column.
Restraints:
Standard seatbelts, with optional inertia-reel belts available.
Oil Change Interval:
Typically every 5,000-7,500 km or annually, depending on usage and oil quality. Manual will specify.
Air Filter Replacement:
Every 15,000-20,000 km or as needed, especially in dusty conditions.
Spark Plug Replacement:
Every 20,000-30,000 km, with specific types and gaps detailed in the manual.
Hydropneumatic Fluid Change:
Regular checks and fluid changes (LHM) are critical for suspension longevity. Intervals typically around 30,000-40,000 km. The manual will provide precise guidance.
Engine Oil:
Typically SAE 20W-50 or SAE 15W-40 mineral oil, conforming to API SF or earlier specifications. Manual will confirm exact grade.
Coolant:
Air-cooled engine, no coolant required.
Brake Fluid:
DOT 3 or DOT 4 brake fluid. Crucially, the hydropneumatic system uses LHM (Citroën's specific mineral-based hydraulic fluid, *not* traditional brake fluid for the suspension).
Transmission Fluid:
API GL-4 75W-90 or equivalent gear oil.
Suspension Leaks:
Common issue with older hydropneumatic systems; seals in spheres, pumps, and hydraulic rams can degrade.
Rust:
As with many cars of this era, particularly susceptible to rust in sills, wheel arches, and underbody.
Carburetor Tuning:
Requires regular tuning and cleaning for optimal performance, especially with older carburetors.
Electrical Corrosion:
Connections and grounds can corrode over time, leading to intermittent electrical faults.
Citroen Philosophy:
Citroën has a long history of innovation, often prioritizing comfort, aerodynamics, and unique technical solutions (e.g., Traction Avant, 2CV, DS).
Gs Development:
Developed as a more modern and spacious successor to the Ami 8, aiming to offer advanced features and comfort at a more accessible price point than the larger DS.
Gsa Introduction:
The GSA was a facelifted and improved version of the GS, introduced in 1979. It featured a revised dashboard (often with toggle switches), a new front-end design with integrated bumpers, and mechanical refinements.
Manufacturing Locations:
Primarily manufactured in France, with some production or assembly occurring in other countries.
Total Production Figures:
Over 1.8 million GS and GSA models were produced during its lifespan.
