🏷️ Basic Information Identification Make: Buick Model: Reatta Year: 1991 Codes Platform Code: GM29 👋 Introduction Market Position Vehicle Segment: Personal luxury coupe, positioned as a sporty and stylish offering from Buick. Competitive Analysis Key Competitors: Ford Thunderbird, Mercury Cougar, Chevrolet Camaro, Pontiac Firebird, Chrysler LeBaron Coupe. Key Features Design Philosophy: Sleek, aerodynamic styling, driver-focused cockpit, and premium interior appointments, emphasizing a European-inspired design aesthetic. Unique Selling Points: Power-retractable hardtop convertible option, extensive use of plastic body panels for weight reduction and dent resistance, advanced (for its time) electronic features. 📋 Manual Details Coverage Areas Manual Coverage Scope: Complete Workshop Service Repair Manual covering all aspects of vehicle service and repair. Page Count Estimated Page Count: Approximately 1200-1500 pages (typical for a comprehensive GM service manual of this era). Manual Type Manual Format Type: Downloadable Workshop Service Repair Manual. Language Language: English Format Digital Format: PDF (Portable Document Format), compatible with PC, MAC, tablets, and smartphones. Print Quality Document Quality: High quality, sharp text and clear, detailed illustrations and diagrams. Binding Type Digital Binding: N/A (Downloadable PDF format allows for printing of individual chapters or the entire document). Paper Type Digital Paper Type: N/A (Digital format, user can choose paper type for printing). 📖 Manual Coverage Systems Covered Powertrain: Engine (3.8L V6), transmission (automatic), fuel system, exhaust system, cooling system, lubrication system. Chassis: Suspension (front and rear), steering system, brakes (front disc, rear disc, ABS), wheels, tires. Electrical: Wiring diagrams, battery, charging system, starting system, lighting, instrumentation, body control modules, power accessories, anti-theft system. Body: Body structure, exterior trim, interior trim, doors, windows (including power windows and convertible top if applicable), seats, climate control system, airbags. Body Control Module: Coverage of the Body Control Module (BCM) and related functions (e.g., power locks, windows, mirrors). Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, tune-ups, lubrication. Repair: Engine overhaul, transmission repair, brake caliper replacement, suspension component replacement, electrical diagnostics and repair, body panel repair. Diagnostics: Troubleshooting guides, diagnostic trouble codes (DTCs) for OBD-I system, symptom-based troubleshooting. Installation Replacement: Component removal and installation, accessory installation, interior and exterior trim replacement. Torque Specifications: Detailed torque specifications for all fasteners, crucial for engine, transmission, and chassis assembly. Technical Depth Diagnostic Capabilities: Advanced diagnostics, including flowcharts, schematics, and specifications for diagnosing complex issues. Rebuild Procedures: Detailed rebuild instructions for major components like the engine and transmission, including torque specifications and clearances. Wiring Diagrams: Comprehensive, section-specific wiring diagrams for all electrical systems. 📊 Manual Specifications File Format PDF Searchability: Likely OCR'd text, allowing for keyword searching within the document. Print Quality Illustration Clarity: Diagrams and illustrations are typically clear and detailed, essential for complex repair procedures. Binding Type Digital Access: Instant email delivery allows for immediate access upon purchase. ⚙️ Engine Specifications Primary Engine Engine Code: 3800 Series I (L27) Displacement: 3.8 Liters (231 cubic inches) Configuration: Naturally Aspirated V6 Performance Horsepower: 170 hp @ 4800 rpm Torque: 220 lb-ft @ 2400 rpm Fuel System Fuel Delivery: Multi-Port Fuel Injection (MPFI) Fuel Type: Unleaded Gasoline (87 octane recommended) Cooling System Coolant Capacity: Approximately 13.2 quarts (12.5 liters) with heater. Lubrication System Oil Capacity: Approximately 4.5 quarts (4.3 liters) with filter change. Recommended Oil Viscosity: SAE 5W-30 (API Service SG or SH) 🔧 Transmission Standard Transmission Transmission Type: 4-speed automatic overdrive (4T60-E) Optional Transmission Optional Transmission Type: N/A (Only automatic offered) Features Transmission Control: Electronic control with torque converter lock-up in higher gears. Fluid Specifications Transmission Fluid Type: Dexron-III (or equivalent) automatic transmission fluid. Fluid Capacity Transmission Fluid Capacity: Approximately 9.5 quarts (9.0 liters) for initial fill, check dipstick for correct level. 📐 Dimensions Exterior Length: 187.6 inches (4765 mm) Width: 70.2 inches (1783 mm) Height: 52.6 inches (1336 mm) Wheelbase: 104.1 inches (2644 mm) Weights Curb Weight: Approximately 3300 - 3500 lbs (1497 - 1588 kg), varies by configuration. 🛡️ Safety Features Ratings NHTSA Crash Test Ratings: Specific NHTSA ratings for 1991 are not readily available in a consolidated format, but the Reatta was designed with safety in mind for its era. Active Features Anti Lock Brakes: Standard Anti-lock Braking System (ABS) on all models. Passive Features Airbags: Driver-side airbag as standard equipment. Seatbelts: Three-point automatic front seat belts and rear lap belts. 💡 Technology Features Infotainment Audio System: Premium AM/FM stereo with cassette player and optional CD player. Many models featured steering wheel-mounted audio controls. Climate Control: Automatic climate control with electronic adjustments was a prominent feature. Driver Assistance Cruise Control: Standard cruise control. Trip Computer: Optional trip computer with various vehicle status readouts. Connectivity OBD System: OBD-I (On-Board Diagnostics - First Generation) compliant. 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000 miles or 6 months, whichever comes first (under normal driving conditions). Transmission Fluid Service: Inspect fluid every 30,000 miles. Replace fluid and filter every 60,000 miles or as...