🏷️ Basic Information Identification Make: Citroën Model: GS Model Generation: GS/A Production Years: 1971-1985 Chassis Codes: GS, GSA 👋 Introduction Market Position Vehicle Segment: Compact family car, known for its innovative design and ride comfort. Competitive Analysis Key Competitors: Renault 12, Peugeot 304, Ford Escort, Opel Kadett. Key Features 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. Manual Value Proposition Affordability: Provides an inexpensive way to maintain and repair the vehicle, saving costs compared to dealership servicing. Manual Target Audience Intended Users: Do-it-yourself enthusiasts, classic car owners, professional mechanics, and restoration specialists. 📋 Manual Details Coverage Applicable Years: 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985 Manual Type: Workshop Service Repair Manual Language: English Format File Format: PDF Printability: Fully Printable Interactivity: Zoom IN/OUT enabled Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader & WinZip Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered 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). Procedures Included 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). Technical Depth 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. 📊 Manual Specifications File Characteristics File Type: PDF (Portable Document Format) Searchability: Likely text-searchable, enhancing user experience for finding specific information quickly. Print Quality Print Readability: Designed for high-quality printing, ensuring clarity of text and diagrams. Binding Type Digital Binding: N/A (Digital Format) Paper Type Digital Paper: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Gs 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). Primary Engine Gsa 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). 🔧 Transmission Drivetrain Layout: Front-wheel drive (FWD) Standard Type: 4-speed manual transaxle Optional Type: 3-speed automatic transaxle (available on some models) Features Gear Ratios: Detailed ratios for each gear and final drive are provided in the manual. Fluid Type: Specific gearbox oil specification (e.g., GL-4 75W-90 or equivalent) detailed in the manual. 📐 Dimensions Exterior Length: Approx. 4000-4150 mm (depending on variant and year) Width: Approx. 1600-1640 mm Height: Approx. 1350-1370 mm Wheelbase: Approx. 2640 mm Weights Curb Weight: Approx. 970-1050 kg Gross Vehicle Weight: Approx. 1400-1500 kg 🛡️ Safety Features Ratings 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. Active Features 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. Passive Features 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....