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| Basic Information | |
| Identification | |
| Make: | Buick |
| Model: | Riviera |
| Year: | 1993 |
| Codes | |
| Vin Prefix: | 1G3 |
| Introduction | |
| Market Position | |
| Segment: | Personal Luxury Coupe |
| Positioning: | Offered a blend of performance, comfort, and advanced technology for its era. |
| Competitive Analysis | |
| Competitors: | Ford Thunderbird, Chrysler LeBaron Coupe, Oldsmobile Toronado |
| Key Features | |
| Design: | Sleek, aerodynamic styling with a distinctive front-wheel-drive platform. |
| Comfort: | Spacious interior, comfortable seating, and a quiet ride. |
| Technology: | Early adoption of electronic features and driver-oriented controls. |
| Manual Details | |
| Coverage Areas | |
| Primary Focus: | Owner's Guide and Operation |
| Secondary Focus: | Basic Maintenance and Troubleshooting |
| Page Count | |
| Estimated Pages: | 150-200 |
| Manual Type | |
| Type: | Owner's Manual |
| Language | |
| Language: | English |
| Format | |
| Format: | PDF (Instant Download) |
| Manual Coverage | |
| Systems Covered | |
| Powertrain: | Engine (3.8L V6), Transmission (4-Speed Automatic) |
| Chassis: | Brakes, Steering, Suspension |
| Electrical: | Lighting, Instrumentation, Audio System, Power Accessories |
| Interior Features: | Climate Control, Seating Adjustments, Safety Restraints |
| Exterior Features: | Door Locks, Mirrors, Wipers |
| Procedures Included | |
| Operation: | Starting, Driving, Parking, Instrument Panel Indicators |
| Maintenance: | Fluid Checks (Oil, Coolant, Brake, Power Steering), Tire Pressure, Wiper Blade Replacement |
| Troubleshooting: | Warning Light Interpretation, Basic Issue Diagnosis |
| Safety: | Seat Belt Usage, Airbag System Information |
| Emergency: | Jumper Starting, Tire Changing, Emergency Kit Recommendations |
| Technical Depth | |
| Depth: | Consumer-focused, covers everyday use and basic owner maintenance. |
| Manual Specifications | |
| File Format | |
| File Type: | |
| Searchable Text: | Likely, depending on original scan quality. |
| Print Quality | |
| Quality: | Dependent on original source; typically clear text and diagrams. |
| Binding Type | |
| Binding: | N/A (Digital PDF) |
| Paper Type | |
| Paper Type: | N/A (Digital PDF) |
| Engine Specifications | |
| Primary Engine | |
| Engine Code: | 3800 (Series I) |
| Displacement: | 3.8 L (231 cu in) |
| Configuration: | V6, Naturally Aspirated |
| Bore X Stroke: | 3.80 in x 3.40 in (96.5 mm x 86.4 mm) |
| Compression Ratio: | 8.5:1 |
| Performance | |
| Horsepower: | 170 hp @ 4800 rpm |
| Torque: | 220 lb-ft @ 3200 rpm |
| Fuel System | |
| Fuel Delivery: | Sequential Fuel Injection (SFI) |
| Fuel Type: | Unleaded Gasoline (87 Octane Recommended) |
| Engine Management | |
| Ignition System: | Distributorless Ignition System (DIS) |
| Engine Control Module: | GM ECM-III (or similar) |
| Transmission | |
| Standard | |
| Type: | 4-Speed Automatic (4T60-E) |
| Drive Layout: | Front-Wheel Drive (FWD) |
| Features | |
| Shift Modes: | Normal/Economy and Performance/Sport |
| Fluid Specifications | |
| Transmission Fluid Type: | Dexron III (or equivalent) |
| Transmission Fluid Capacity: | Approx. 7.0 quarts (6.6 liters) for complete refill |
| Dimensions | |
| Exterior | |
| Length: | 199.9 inches (5078 mm) |
| Width: | 72.4 inches (1839 mm) |
| Height: | 54.2 inches (1377 mm) |
| Wheelbase: | 107.0 inches (2718 mm) |
| Front Track: | 61.2 inches (1554 mm) |
| Rear Track: | 60.5 inches (1537 mm) |
| Weights | |
| Curb Weight: | 3500-3700 lbs (1588-1678 kg) approx. |
| Gross Vehicle Weight Rating: | 4500 lbs (2041 kg) approx. |
| Cargo | |
| Trunk Volume: | 16.5 cu ft (467 L) |
| Safety Features | |
| Ratings | |
| NHTSA Frontal Impact: | Not available for this model year from public databases. |
| IIHS Ratings: | Not available for this model year from public databases. |
| Active Features | |
| ABS: | Optional Anti-lock Braking System (ABS) |
| Traction Control: | Not typically available on base models. |
| Passive Features | |
| Airbags: | Driver Side Airbag (Standard) |
| Seatbelts: | Three-point front and rear seat belts |
| Child Seat Anchors: | Not standard; LATCH system not present. |
| Technology Features | |
| Infotainment | |
| Audio System: | AM/FM Stereo with Cassette Player and optional Compact Disc (CD) player. |
| Climate Control: | Optional Automatic Climate Control (ACC) system. |
| Driver Assistance | |
| Cruise Control: | Standard on most models. |
| Keyless Entry: | Optional remote keyless entry system. |
| Comfort Features | |
| Power Seats: | Optional power driver and passenger seats with lumbar support. |
| Power Windows: | Standard power windows with driver's express-down feature. |
| Telescopic Steering Wheel: | Optional tilt and telescopic steering wheel. |
| Maintenance | |
| Service Intervals | |
| Oil Change Interval: | Every 3,000-5,000 miles (4,800-8,000 km) or 3-6 months, depending on driving conditions. |
| Transmission Fluid Service: | Every 30,000-60,000 miles (48,000-96,000 km) or as per manual recommendations. |
| Coolant Flush: | Every 30,000-50,000 miles (48,000-80,000 km) or 2-3 years. |
| Spark Plug Replacement: | Typically every 30,000-60,000 miles (48,000-96,000 km) for platinum plugs. |
| Fluid Specifications | |
| Engine Oil Type: | API SG, SJ, or SL; SAE 5W-30 or 10W-30 recommended (check manual for specific viscosity) |
| Engine Oil Capacity: | 4.5 quarts (4.3 liters) with filter |
| Coolant Type: | GM Gen I (Green) Antifreeze/Coolant |
| Coolant Capacity: | Approx. 11.0 quarts (10.4 liters) |
| Brake Fluid Type: | DOT 3 |
| Power Steering Fluid Type: | GM Power Steering Fluid or Dexron III |
| Known Issues | |
| Common Complaints: | Intake manifold gasket leaks, power window regulator failures, transmission issues (4T60-E common in the early days), dashboard material degradation. |
| Electrical Quirks: | Early electronic systems can be prone to failure if not maintained; climate control module issues. |
| Vehicle History | |
| Brand Heritage | |
| Brand Identity: | Buick positioned as a premium American marque, emphasizing comfort and style. |
| Model Evolution | |
| Generation: | Fifth Generation (1990-1996) |
| Platform: | GM W-body platform (shared with Chevrolet Lumina Coupe and Oldsmobile Cutlass Supreme Coupe) |
| Production | |
| Manufacturing Location: | Detroit, Michigan, USA |
| Production Years For Generation: | 1990, 1991, 1992, 1993, 1994, 1995, 1996 |
| Awards & Recognition | |
| Recognitions | |
| Model Specific Awards: | No prominent major awards are widely cited for the 1993 model specifically, but the 3800 engine was highly regarded for its reliability and smoothness. |
| Ratings | |
| Consumer Reports Reliability: | Varied; the 3800 engine itself generally received good marks, but early electronic systems and some accessory components were sometimes criticized. |
