Target Audience:
Professional technicians and experienced DIY mechanics with basic electrical and mechanical knowledge.
Manual Type Comparison:
Equivalent to or surpasses factory service manuals; offers a comprehensive resource comparable to paper manuals but with the convenience of digital access.
Content Features:
Step-by-step repair procedures, critical specifications, illustrations/pictures, maintenance schedules, disassembly/assembly instructions, cleaning and reinstallation procedures, troubleshooting guides.
Practical Application:
Empowers owners to make informed maintenance and repair decisions, enabling them to perform tasks that factory-trained technicians undertake.
Main Coverage Areas:
Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, Bodywork, Climate Control, Fuel System, Cooling System, Lubrication System, Exhaust System, Interior Trim, Exterior Trim, Troubleshooting, Maintenance, Repair Procedures
Estimated Page Count:
High (Typical factory service manuals of this era range from 500-1000+ pages)
Manual Type:
Repair and Service Manual
Engine Systems:
Engine mechanicals, lubrication, cooling, fuel delivery, ignition, emissions control, engine diagnostics, disassembly, assembly, overhaul
Transmission Drivetrain Systems:
Manual transmission, Hydropneumatic transmission (Citroën's semi-automatic system), clutch, driveshafts, differential, general maintenance and repair
Suspension Steering Systems:
Hydropneumatic suspension system (front and rear), spheres, suspension arms, anti-roll bars, steering rack, power steering (if applicable), geometry adjustments
Brake Systems:
Front disc brakes, rear drum brakes, brake system bleeding, hydraulic components, parking brake
Electrical Systems:
Wiring diagrams, lighting, ignition system, starter, alternator, battery, dashboard instruments, fuses, relays, diagnostic procedures for electrical faults
Bodywork Chassis Systems:
Body panel removal and installation, interior trim, exterior trim, doors, windows, seats, safety features, underbody corrosion prevention
Maintenance Procedures:
Scheduled maintenance, fluid changes (oil, coolant, brake fluid, hydropneumatic fluid), filter replacements, lubrication points, tune-ups, belt adjustments
Repair Procedures:
Step-by-step instructions for component removal, disassembly, cleaning, inspection, repair, assembly, and reinstallation
Troubleshooting Diagnostics:
Identification of common problems, diagnostic charts, fault finding for engine, transmission, electrical, and hydropneumatic systems
Depth Of Coverage:
Comprehensive. Covers routine maintenance to major overhauls and rebuilds, including detailed diagnostic information for professional technicians and advanced DIYers.
Engine Type:
Flat-four (Boxer) engine
Engine Displacement Variants:
1015cc, 1124cc, 1216cc, 1299cc (later models)
Horsepower Range:
Approx. 50-70 hp (depending on engine variant)
Torque Range:
Approx. 70-90 Nm (depending on engine variant)
Fuel Delivery:
Carburetor (e.g., Solex, Weber)
Oil Type Specification:
Refer to manual for specific API service classifications and viscosity grades (e.g., SAE 10W-40, 15W-50 typical for the era).
Engine Code System:
Citroën used specific engine identification codes which can be found within the manual for precise identification of engine variants.
Transmission Type:
Hydropneumatic semi-automatic transmission (Citroën's 'CC' transmission - Citroën Connecté)
Optional Transmission Type:
4-speed Manual Transmission (less common, often on base models or specific markets)
Clutch Operation:
Automated clutch operation for the hydropneumatic system, operated by a vacuum servo.
Transmission Fluid Type:
Refer to manual for specific LHM (Liquide Hydraulique Minéral) or equivalent fluid for the hydropneumatic system. Manual transmissions require specific gear oil.
Crash Test Ratings:
Information on early crash test performance is limited for this era; manual will detail structural integrity and safety features as designed.
Active Safety Features:
Disc brakes (front), powerful hydraulic braking system, stable hydropneumatic suspension providing excellent road holding.
Passive Safety Features:
Lap and diagonal seat belts (front and rear depending on trim), reinforced body structure, impact-absorbing steering column (typical for the era).
Infotainment System:
Basic for its era; typically AM/FM radio, often with manual tuning and speaker controls. GSA may have slightly more integrated radio systems.
Driver Assistance Features:
Limited by modern standards. The primary 'assistance' was the self-levelling hydropneumatic suspension offering a smooth ride and consistent handling.
Connectivity Features:
None by modern definition; features were purely mechanical and electrical systems of the vehicle itself.
Oil Change Interval:
Typically every 5,000-10,000 km or 6-12 months, refer to manual for specific recommendations.
Hydropneumatic Fluid Change:
Regular inspection and potential flushing/replacement, typically recommended every 40,000-60,000 km or as specified by Citroën.
Coolant Type:
Water/Glycol mix, specific ratio and type to be confirmed in manual.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid, refer to manual for precise specification.
Common Engine Issues:
Oil leaks from boxer engine seals, potential for carburettor tuning issues, air-cooling system efficiency under extreme conditions.
Common Hydropneumatic Issues:
Leaking suspension spheres, malfunctioning pressure regulator, loss of ride height, potential for fluid contamination.
Common Electrical Issues:
Corrosion in wiring connectors, aging electrical components, intermittent faults due to wiring loom wear.
Spark Plug Specification:
Specific spark plug type and gap (e.g., Champion, NGK) will be detailed in the manual.
Air Filter Part Number Example:
Refer to manual for specific part numbers (e.g., potentially Mann-Filter, Purflux).
Citroen Innovation:
Citroën is renowned for its pioneering engineering, particularly in suspension systems (like the 2CV and DS) and front-wheel drive technology, all of which influence the GS.
Gs Development:
Developed as a more affordable, compact alternative to the iconic DS, featuring innovative styling, hydropneumatic suspension, and a unique boxer engine layout.
Gsa Update:
The GSA (introduced in 1980) received significant updates, including a revised dashboard with a single-spoke steering wheel and improved interior ergonomics.
Production Period:
1970-1986 (GS/GSA)
Manufacturing Location:
France (primarily Rennes-sur-Vilaine) and other international plants.
European Car Of The Year:
While not a direct winner, the GS was a strong contender and highly regarded for its engineering and comfort.
Industry Reputation:
Recognized for its innovative hydropneumatic suspension, aerodynamic styling, and comfortable ride, making it a unique offering in its segment.
