1999 Buick Riviera Service and Repair Manual

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🏷️ Basic Information Identification Make: Buick Model: Riviera Year: 1999 Codes Platform Code: G-body (further refinement needed for specific Riviera platform) Engine Code Primary: L36 (3.8L V6 Series II Supercharged)...

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Type: Car

Vendor:

Sku: 82199

Tags: 1999 Buick Car Cars Featured Riviera

Product variants

Description

🏷️ Basic Information

Identification

Make:

Buick

Model:

Riviera

Year:

Codes

Platform Code:

G-body (further refinement needed for specific Riviera platform)

Engine Code Primary:

L36 (3.8L V6 Series II Supercharged)

Engine Code Secondary:

LG8 (3.8L V6 Naturally Aspirated - less common for '99 Riviera, but possible)

👋 Introduction

Market Position

Positioning:

Premium personal luxury coupe, targeting comfort, style, and performance.

Competitive Analysis

Competitors:

Ford Thunderbird, Chrysler LHS, Lincoln Mark VIII, Cadillac Eldorado.

Key Features

Design Philosophy:

Focus on advanced technology, comfortable ride, and distinctive styling for its era.

Target Audience:

Consumers seeking a refined, well-equipped, and comfortable American-made coupe.

Manual Value Proposition

Diy Advantage:

Empowers owners to perform their own maintenance and repairs, saving costs and increasing vehicle knowledge.

Professional Standard:

Provides dealership-level technical information for accurate and efficient servicing.

📋 Manual Details

Coverage Areas

Diagnostic Procedures:

Full A-Z diagnosis and troubleshooting

Repair Coverage:

All mechanical, electrical, and body repairs

Maintenance Coverage:

Scheduled maintenance, fluid changes, component replacement

Page Count

Estimated Page Count:

Likely over 1500 pages (typical for comprehensive factory service manuals)

Manual Type

Type:

Factory Service Manual (FSM) / Repair Manual

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine Systems:

Engine mechanical, fuel injection, ignition, cooling, lubrication, emissions control

Powertrain Systems:

Automatic transmission (4T65-E), transfer case (if applicable), drive shafts, differentials, axles

Suspension Steering:

Front and rear suspension, steering column, power steering system, wheel alignment

Braking Systems:

Front and rear brakes (disc/drum), ABS control, parking brake system

Electrical Systems:

Battery, charging system, starting system, lighting, instrumentation, power accessories, multiplex communication (CAN)

Climate Control:

Air conditioning system, heater, ventilation

Safety Restraints:

Supplemental Restraint System (SRS) / Airbags, seat belts, engine immobilizer

Body Interior:

Body panels, doors, locks, windows, mirrors, interior trim, seats, instrument panel

Comfort Convenience:

Cruise control, wipers, washers, audio/visual systems, horn

Procedures Included

Engine Repair:

Engine overhaul, component replacement (pistons, rings, bearings, valves, seals), timing system

Transmission Service:

Transmission fluid and filter change, internal component repair, solenoid replacement

Brake Service:

Brake pad/shoe replacement, rotor/drum resurfacing/replacement, caliper/wheel cylinder service, bleeding procedures

Electrical Diagnostics:

Wiring schematic interpretation, circuit testing, component diagnosis (sensors, actuators, modules)

Suspension Alignment:

Component replacement (struts, shocks, ball joints, tie rods), wheel alignment specifications and procedures

Air Conditioning Service:

Refrigerant handling, component replacement (compressor, condenser, evaporator), leak detection

Troubleshooting Guides:

Systematic approaches to diagnosing common and complex issues

Specifications Data:

Torque values, clearances, fluid capacities, electrical values

Technical Depth

Depth:

Factory-level, comprehensive diagnostic and repair procedures

Diagnostic Tools:

References to factory diagnostic tools (e.g., Tech 2) and procedures

Component Rebuild:

Detailed instructions for engine and transmission component rebuilding

Wiring Schematics:

Complete, detailed wiring diagrams for all electrical systems

Illustrations Diagrams:

High-quality illustrations and exploded views for component identification and assembly

📊 Manual Specifications

File Format

File Type:

Searchability:

Likely text-searchable (depending on PDF creation)

Print Quality

Printability:

Yes, all pages are printable

Image Resolution:

High-resolution for clear viewing and enlarged printing of diagrams

Binding Type

Binding:

Digital (No physical binding)

Paper Type

Paper Quality Suggestion:

Suggests printing on durable, oil-resistant paper for workshop use

Compatibility

Operating Systems:

Windows (Vista 32/64, XP, ME, 98, NT, 2000) and Mac compatible

Requirements

Software Requirements:

Adobe PDF Reader, Winzip (free downloads)

⚙️ Engine Specifications

Primary Engine

Engine Name:

3.8L V6 Series II Supercharged

Engine Type:

Overhead Valve (OHV) V6

Displacement:

3791 cc (231 cubic inches)

Bore X Stroke:

3.80 x 3.38 inches (96.5 x 86.0 mm)

Compression Ratio:

9.5:1

Horsepower:

240 hp @ 4400 rpm

Torque:

280 lb-ft @ 3600 rpm

Fuel System

Fuel Delivery:

Sequential Multi-Port Fuel Injection (MFI) with Supercharger

Fuel Type:

Premium Unleaded Gasoline (91 octane recommended)

Cooling System

Cooling Capacity:

Approx. 13.5 US quarts (12.8 Liters)

Lubrication

Oil Capacity:

Approx. 4.5 US quarts (4.3 Liters) with filter change

Recommended Oil Viscosity:

SAE 5W-30 (API Service SG, SH, or SJ)

🔧 Transmission

Standard

Transmission Type:

4-speed automatic (4T65-E)

Optional

Transmission Options:

None for the 1999 Riviera Supercharged model.

Features

Transmission Control:

Electronic Control Module (ECM) controlled with performance shifting capabilities.

Transmission Fluid Capacity:

Approx. 10.5 US quarts (9.9 Liters) for overhaul

Transmission Fluid Type:

Dexron III / Mercon Automatic Transmission Fluid (ATF)

📐 Dimensions

Exterior

Length:

201.7 inches (5123 mm)

Width:

74.5 inches (1892 mm)

Height:

53.2 inches (1351 mm)

Wheelbase:

110.9 inches (2817 mm)

Front Track:

61.6 inches (1565 mm)

Rear Track:

61.0 inches (1550 mm)

Weights

Curb Weight:

Approx. 3700-3900 lbs (1678-1769 kg) depending on options

Gross Vehicle Weight Rating:

Approx. 4800 lbs (2177 kg)

Cargo

Trunk Volume:

Approx. 15.7 cubic feet (445 Liters)

🛡️ Safety Features

Ratings

NHTSA Frontal Impact Driver:

Likely 4-star rating (typical for vehicles of this era)

NHTSA Frontal Impact Passenger:

Likely 4-star rating

Active Features

Standard Anti-lock Braking System (ABS)

Traction Control:

Often available as an option, especially with the supercharged engine.

Passive Features

Airbags:

Driver and passenger front airbags. Side airbags were optional.

Seat Belts:

Three-point front and rear seat belts, front seat belt pretensioners.

💡 Technology Features

Infotainment

Audio System:

Optional Bose premium audio system with CD player and cassette. Standard AM/FM stereo with cassette.

Driver Assistance

Cruise Control:

Standard cruise control system.

Connectivity

Multiplex Communication:

Utilizes a multiplex communication system (e.g., Class 2 serial data bus) for inter-module communication, including CAN bus for some functions.

Comfort Features

Climate Control Type:

Available dual-zone automatic climate control.

Seats:

Power adjustable front seats, available heated seats, and memory function for driver's seat.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 5,000 miles or 6 months, whichever comes first (under normal driving conditions).

Air Filter Replacement:

Every 30,000 miles or 2 years.

Spark Plug Replacement:

Recommended replacement interval is typically around 60,000 - 100,000 miles for platinum-tipped plugs used in this era.

Transmission Fluid Service:

Every 30,000 - 60,000 miles, depending on driving conditions and manufacturer recommendations.

Fluid Specifications

Coolant Type:

GM P/N 10528098 or equivalent, typically a 50/50 mix of ethylene glycol antifreeze and distilled water.

Power Steering Fluid:

Dexron III/Mercon ATF or GM P/N 10512066.

Known Issues

Engine Oil Leaks:

Common for valve cover gaskets and oil pan gaskets to leak over time.

Supercharger Idler Pulley:

The idler pulley bearing on the supercharger drive belt can fail, causing noise or belt issues.

Transmission Hard Shifts:

The 4T65-E transmission can sometimes exhibit hard shifting or slipping, often due to worn solenoids or internal wear.

Electrical Connectors:

Corrosion or looseness in electrical connectors, particularly in chassis and engine harness, can lead to intermittent issues.

Evaporative Emissions System:

Faulty vent solenoids or purge valves in the EVAP system can trigger check engine lights.

Suspension Component Wear:

Ball joints, tie rod ends, and bushings can wear, leading to steering looseness or clunking noises.

📚 Vehicle History

Brand Heritage

Buick Legacy:

Buick has a long history of producing upscale and comfortable American automobiles, with the Riviera being a flagship personal luxury coupe for decades.

Model Evolution

Seventh Generation:

The 1999 model year represents the final production year of the seventh generation Riviera, introduced for the 1995 model year. It was based on the GM E platform.

Styling Direction:

This generation marked a departure from the more angular designs of previous Rivieras, embracing smoother, more aerodynamic lines.

Production

Production Years:

Riviera produced from 1963-1999.

Manufacturing Location:

Orion Assembly, Michigan, USA.

🏆 Awards & Recognition

Recognitions

None:

Specific awards for the 1999 Buick Riviera are not prominently documented, but it was generally well-regarded for its comfort and features in its segment.