Vehicle Segment:
Full-size Personal Luxury Coupe.
Target Audience:
Buyers seeking comfortable, stylish, and powerful grand touring vehicles.
Key Competitors 1999:
Ford Thunderbird, Mercury Cougar, Chrysler Sebring Coupe, Toyota Avalon (though sedan, shared luxury coupe aspirations).
Distinguishing Attributes:
Sleek aerodynamic styling, powerful V8 engine options, comfortable and quiet interior, advanced features for its time (e.g., MagnaRide suspension on some models, though likely not standard on all 1999 models).
Coverage Overview:
Features, controls, maintenance/service schedules, DIY activities, towing, and safety considerations for the 1999 Buick Riviera.
Estimated Page Count:
Approximately 300-400 pages (typical for a full owner's manual of this era).
Manual Type:
Owner's Manual
Powertrain Systems:
Engine operation, cooling system, fuel system, exhaust system.
Chassis Systems:
Brake system, steering system, suspension system, wheel and tire information.
Electrical Systems:
Lighting, instrument cluster, gauges, warning lights, battery, charging system, starting system, infotainment system controls, power accessories.
Comfort Convenience:
Climate control (HVAC), power seats, power windows, locks, mirrors, sunroof, keyless entry, cruise control, interior features.
Safety Systems:
Airbag system, seat belts, child restraint systems, anti-lock braking system (ABS).
Maintenance Procedures:
Routine checks (fluids, tires), oil and filter changes, air filter replacement, wiper blade replacement, basic troubleshooting for common warning lights.
Do It Yourself:
Light maintenance tasks, bulb replacement, cleaning and care instructions.
Towing Considerations:
Towing capacity, trailer wiring information, towing precautions, vehicle operation when towing.
Safety Considerations:
Emergency procedures, driving in adverse conditions, vehicle security.
Depth Of Information:
Comprehensive owner-level information, focusing on understanding vehicle operation, basic maintenance, and safe usage. Not a full factory service manual.
Engine Type 1:
3.8L (3800) Series II V6
Engine Displacement 1:
3.8 liters (231 cubic inches)
Engine Configuration 1:
V6
Aspiration 1:
Naturally Aspirated
Horsepower 1:
Approximately 205 hp @ 5000 rpm (Series II V6)
Torque 1:
Approximately 230 lb-ft @ 3200 rpm (Series II V6)
Engine Type 2:
Supercharged 3.8L (3800) Series II V6
Engine Displacement 2:
3.8 liters (231 cubic inches)
Aspiration 2:
Supercharged
Horsepower 2:
Approximately 240 hp @ 5200 rpm (Supercharged Series II V6)
Torque 2:
Approximately 280 lb-ft @ 3600 rpm (Supercharged Series II V6)
Fuel Delivery:
Multi-port Fuel Injection (MPFI)
Fuel Type:
Unleaded gasoline
Recommended Octane:
87 octane (minimum), 91+ for Supercharged model recommended for optimal performance.
Length:
Approximately 201.1 inches (5108 mm)
Width:
Approximately 74.4 inches (1890 mm)
Height:
Approximately 53.5 inches (1359 mm)
Wheelbase:
Approximately 110.5 inches (2807 mm)
Curb Weight Approximate:
3500 - 3700 lbs (1588 - 1678 kg), depending on engine and options.
NHTSA Frontal Crash Rating:
4-star driver, 4-star passenger (based on available data for similar GM vehicles of the era).
Active Safety Systems:
Anti-lock Braking System (ABS), Traction Control System (TCS).
Passive Safety Systems:
Dual front airbags, front side-impact airbags (optional on some trims), three-point front seat belts with pretensioners, rear seat belts, child seat LATCH anchors (rear outboard seats).
Rollover Protection:
Reinforced roof structure for side impact and rollover protection.
Audio System:
Factory AM/FM stereo with cassette and CD player options, Bose premium audio available.
Climate Control Type:
Automatic Climate Control (optional), manual HVAC with A/C.
Cruise Control:
Standard cruise control.
Keyless Entry:
Remote keyless entry system.
Connectivity Features:
No integrated Bluetooth or USB connectivity from factory; analog systems only.
Oil Change Interval:
Typically every 7,500 miles or 6 months, or as indicated by the Oil Life Monitoring System.
Tire Rotation Interval:
Every 7,500 miles.
Transmission Fluid Change:
Refer to manual for specific intervals, typically around 100,000 miles under normal driving conditions, or sooner under severe conditions.
Coolant Change Interval:
Initial change at 100,000 miles, then every 50,000 miles thereafter (using Dex-Cool or equivalent).
Engine Oil Type:
SAE 5W-30 Synthetic Blend or Full Synthetic.
Engine Oil Capacity:
Approximately 4.5 quarts (4.3 liters) with filter for 3.8L V6.
Transmission Fluid Type:
Dexron III (or Dexron VI compatible) automatic transmission fluid.
Coolant Type:
GM P/N 12346994 (Orange) or equivalent Dex-Cool (50/50 mix with distilled water).
Common Issues 3800 Series Ii:
Lower intake manifold gasket leaks (though less common on Series II than earlier Series I), alternator issues (sometimes integrated with water pump on specific setups), fuel injector leaks, occasional power steering leaks.
Common Issues Supercharger:
Supercharger belt tensioner wear, potential for supercharger clutch bearing noise.
Suspension Steering:
Front strut bearing noise, tie rod end wear, occasional power steering pump whine.
Electrical:
Window regulator failures, power seat motor issues, HVAC blower motor resistor failure, dashboard illumination problems.
Buick Legacy:
Buick has a long history of producing comfortable, well-appointed, and powerful vehicles, often targeting a more mature and affluent demographic.
Eighth Generation Context:
The eighth generation Riviera (1995-1999) represented a departure from earlier generations, adopting a sleeker, more aerodynamic design, and focusing on front-wheel-drive performance and comfort, built on GM's G-platform.
Production Years Eighth Gen:
1995-1999
Manufacturing Location:
Detroit/Hamtramck Assembly, Michigan, USA.
Magazine Awards:
While specific awards for the '99 Riviera are less publicized, the 3800 V6 engine itself was a perennial winner of Ward's 10 Best Engines for many years during this period, highlighting its refinement and durability.
Consumer Reports General Perception:
Often rated well for comfort and engine power, but sometimes criticized for styling and reliability compared to Japanese luxury marques of the era.
