🏷️ Basic Information Identification Make: Citroën Model: GS / GSA Year: 1979 Generation Generation Name: Series 2 / GSA Introduction Codes Vehicle Code: Likely internal Citroën codes such as Y3 or similar, specific to GS/GSA range. 👋 Introduction Market Position Positioning: The Citroën GS/GSA was positioned as a distinctive, technologically advanced compact/medium family car, renowned for its aerodynamic design, unique hydropneumatic suspension, and comfortable ride. Competitive Analysis Competitors: Competed against cars like the Volkswagen Golf, Ford Escort, Renault 12, and Fiat 128, offering a more sophisticated engineering package. Key Features Design Elements: Aerodynamic 'breadvan' styling, distinctive Kamm-tail, twin-spoke steering wheel (GSA), and innovative dashboard layout. Manual Purpose Target Audience: Primarily professional technicians, but also suitable for DIY mechanics with basic mechanical and electrical knowledge. Manual Utility Benefit: Provides factory-level information for accurate and efficient maintenance and repair, enabling owners to make informed decisions and perform tasks themselves. 📋 Manual Details Coverage Areas Coverage Years: Primarily 1979, but often includes related preceding or succeeding model year information due to shared components and evolution. Regions Covered: Primarily European specifications, reflecting the primary market for the GS/GSA. Page Count Estimated Page Count: Estimated 500-800+ pages, typical for comprehensive factory-level repair manuals. Manual Type Type: Repair Service Manual / Workshop Manual Language Language: English Format File Format: PDF Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinZip (or equivalent decompression software) Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Powertrain: Engine (all variants), Fuel System, Ignition System, Cooling System, Exhaust System, Transmission (manual and automatic if applicable). Chassis: Suspension System (including hydropneumatic system), Steering System, Braking System (including parking brake). Electrical: Wiring Diagrams, Lighting System, Ignition, Starting System, Charging System, Instrumentation, Accessories. Bodywork: Body Panels, Doors, Windows, Bumpers, Interior Trim, HVAC (Heating, Ventilation, and Air Conditioning if equipped). Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, lubrication, adjustments. Repair: Detailed step-by-step repair procedures for all major components, including disassembly, cleaning, inspection, repair, and reassembly. Troubleshooting: Diagnostic charts, common problems, symptom-based troubleshooting guides. Technical Data: Specifications, tolerances, torque values, electrical resistance, component testing procedures. Technical Depth Depth: Comprehensive, covering basic maintenance to advanced component rebuilds. Suitable for professional technicians and experienced DIYers. 📊 Manual Specifications File Format Print Quality: Full Printable (high-resolution, suitable for printing individual pages or the entire manual). Zoom Capability: YES (allows for detailed viewing of diagrams and text). Binding Type Binding: N/A (Digital PDF - no physical binding). Paper Type Paper: N/A (Digital PDF - no physical paper). ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled flat-four (boxer) engine. Displacement Gs: 1015 cc (1.0L) and 1220 cc (1.2L) initially. Displacement Gsa: 1220 cc (1.2L) and 1299 cc (1.3L) (introduced with GSA). Performance Gs Power Output: Varies by engine size: ~54-60 hp for 1.0L, ~56-65 hp for 1.2L. Gsa Power Output: Varies by engine size: ~65 hp for 1.2L, ~60-70 hp for 1.3L. Fuel System Induction: Single or twin-choke downdraft carburettors (e.g., Solex, Weber). Engine Management Ignition System: Contact breaker points (early models) or electronic ignition (later models/upgrades). 🔧 Transmission Standard Transmission Type: 4-speed manual transmission (standard on most models). Optional Transmission Type: 3-speed automatic transmission (less common, often referred to as 'Citroën-matic' or similar). Features Clutch Type: Single dry plate clutch. 📐 Dimensions Exterior Length: Approx. 4090 mm (GS) / 4120 mm (GSA). Width: Approx. 1620 mm. Height: Approx. 1370 mm. Weights Kerb Weight: Approx. 970 - 1050 kg, depending on variant. 🛡️ Safety Features Ratings Crash Safety: Limited formal crash test data available by modern standards; designed with a crumple zone philosophy and integrated safety cage. Active Features Braking System: Disc brakes front, drum brakes rear. Often featured a brake pressure regulator and potentially front brake bias adjustment. Passive Features Seatbelts: Provision for seatbelts, likely lap belts in front and rear as standard, with optional three-point belts. Steering Column: Collapsible steering column. 💡 Technology Features Infotainment Audio System: Typically a basic analogue radio and cassette player, often with a single speaker or optional dashboard speaker. Driver Assistance Braking Assistance: The hydropneumatic system provided self-levelling and a unique 'brake feel' through its integration with the braking circuit. Connectivity Connectivity Features: None by modern standards. Focus was on mechanical and ride comfort technology. Interior Tech Dashboard Design: The GSA featured a distinctive 'satellite' control stalk system and a unique dashboard layout with prominent instrumentation, moving away from the GS's more conventional (but still unique) design. 🔧 Maintenance Service Intervals Oil Change: Typically every 5,000 - 7,500 km or 6 months, depending on driving conditions and oil type used. Tune Up: Spark plugs, ignition points (if applicable), and air filter replacement typically around 15,000 - 20,000 km. Fluid Specifications Engine Oil: Multi-grade oils such as SAE 10W-40 or 15W-50 were common, with specific viscosity recommendations depending on ambient temperature. API SG or equivalent service classification recommended....