Target Audience:
Primarily professional technicians, but also suitable for experienced DIY mechanics and owners performing repairs and maintenance.
Value Proposition:
Provides the same in-depth information used by professional mechanics, offering a cost-effective alternative to dealership service or specialized workshops.
Content Scope:
Covers repairs, service schedules, maintenance, wiring diagrams, and diagnostics, offering a complete guide for the vehicle's lifespan.
Download Advantage:
Instant download eliminates shipping costs and waiting times associated with physical manuals.
Engine Systems:
Engine mechanicals, cooling system, lubrication system, fuel system, ignition system, exhaust system, emissions control.
Drivetrain Systems:
Clutch, gearbox (manual and automatic where applicable), final drive, driveshafts.
Suspension Steering:
Hydropneumatic suspension (front and rear), control arms, steering rack, steering column, wheel alignment.
Braking Systems:
Front disc brakes, rear drum brakes, brake fluid, master cylinder, brake lines, parking brake.
Electrical Systems:
12-volt electrical system, battery, alternator, starter motor, lighting system, instrumentation, wiring diagrams, diagnostic procedures.
Body Chassis:
Body construction, panels, doors, windows, interior trim, underbody protection, corrosion prevention.
Maintenance Procedures:
Routine maintenance checks, oil changes, filter replacements, spark plug replacement, fluid level checks, lubrication points.
Repair Procedures:
Detailed step-by-step repair instructions for all major mechanical and electrical components.
Troubleshooting:
Diagnostic charts and procedures for common problems, fault finding for engine, electrical, and mechanical systems.
Rebuilding Refurbishment:
Procedures for engine rebuild, gearbox overhaul, suspension component refurbishment.
Diagnostic Depth:
Advanced diagnostic procedures, including electrical system diagnosis with detailed wiring schematics.
Repair Detail:
Comprehensive repair procedures with detailed sub-steps, notes, cautions, and warnings for critical information.
Illustrations:
Detailed illustrations, drawings, and photos to guide each procedure, with enlarged insets for detailed part examination.
Engine Type:
Air-cooled flat-four (boxer) engine. Specific displacement varied across GS/GSA models and years (e.g., 1015cc, 1222cc).
Horsepower Range:
Typically ranged from 50 HP to 70 HP depending on displacement and tune.
Torque Range:
Varies with engine size, generally in the 50-65 lb-ft range.
Fuel Delivery:
Carbureted (e.g., Solex, Weber). Specific carburetor models vary by engine variant.
Cooling Method:
Forced air cooling via a belt-driven fan.
Ignition Type:
Contact breaker (points) ignition system, later models may feature electronic ignition.
Gearbox Type:
4-speed manual transaxle. Some later models offered a 5-speed manual.
Automatic Option:
Not commonly available or standard for the 1972 model year, though automatic transmissions were introduced on later GSA variants.
Clutch Type:
Dry single-plate clutch.
Transmission Fluid:
GL-4 specification gear oil. Specific viscosity (e.g., 75W-90 or 80W-90) recommended.
Oil Change Interval:
Typically every 3,000-5,000 miles (5,000-8,000 km) or 6-12 months, depending on driving conditions. Consult manual for specific recommendation.
Major Service:
Recommendations for gearbox oil changes, coolant flushes, brake fluid replacement, and ignition system checks at specific mileage intervals.
Engine Oil Spec:
API SE/SF or equivalent. Viscosity typically 10W-40 or 20W-50 depending on climate.
Brake Fluid Spec:
DOT 3 or DOT 4 hydraulic brake fluid.
Coolant Spec:
Ethylene glycol-based antifreeze/coolant. Specific mixture ratio recommended in manual.
Hydropneumatic Suspension:
Potential for hydraulic fluid leaks, failing spheres (accumulators), and worn suspension components. Requires specialized knowledge and tools for maintenance.
Engine Cooling:
Air-cooled engines are generally robust but require proper airflow. Overheating can be an issue if cooling fins are blocked or the fan is not functioning correctly.
Electrical Corrosion:
As with many cars of this era, electrical connections can be prone to corrosion, particularly in damp environments.
Citroen Innovation:
Citroën's reputation for pioneering automotive technology, exemplified by the hydropneumatic suspension and distinctive aerodynamic styling.
Gs Development:
The GS was a significant model for Citroën, designed by Robert Opron, bridging the gap between the smaller Ami 8 and larger DS. The GSA was a facelifted version introduced in 1980 with styling and interior updates.
Production Period:
GS production ran from 1970 to 1986. The GSA facelift was from 1980 to 1986.
Manufacturing Location:
France.
