The 1999 Oldsmobile Aurora is a 4-door sedan from the second generation of this model, produced from 1995 to 2003. This premium full-size sedan was engineered to compete with established luxury marques, offering a spacious interior, a comfortable ride, and distinctive styling. Notable features include available powerful V8 Northstar engine options, producing up to 275 horsepower, and advanced technology for its era such as optional OnStar. The Aurora was designed to provide a more affordable yet luxurious alternative, characterized by its robust engineering and a focus on driver and passenger comfort.
This comprehensive service and repair manual software provides factory-level technical information for the 1999 Oldsmobile Aurora. It covers all vehicle systems, including engine mechanical, performance, fuel, ignition, exhaust, cooling, lubrication, drivetrain, brakes, suspension, steering, climate control, electrical systems, body, frame, and SRS. The manual details routine maintenance, inspections, troubleshooting, diagnostic procedures, component removal and installation, repair procedures, adjustments, and system overhauls. It is an essential resource for owners, mechanics, and technicians to accurately maintain, diagnose, and repair the vehicle, ensuring its optimal performance and longevity.
๐ท๏ธ Basic Information
Generation:
Second Generation (1995-2003)
Market Position:
Premium Full-Size Sedan, competing with domestic and import luxury marques
Competitive Analysis:
Positioned as a more affordable alternative to established European luxury sedans while offering comparable comfort and features. Competed directly with vehicles like the Lincoln Continental, Cadillac Seville, and select Japanese luxury sedans.
Key Features:
Spacious interior, comfortable ride, distinctive styling, powerful V8 engine options, advanced features for its era.
Coverage Areas:
Comprehensive service and repair for all systems
Page Count:
Extensive (digital format, equivalent to a large printed manual)
Manual Type:
Service and Repair Manual Software
Format:
Digital Software (Online Access)
Systems Covered:
Engine Mechanical, Engine Performance, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System, Drivetrain (Transmission, Axles), Brakes, Suspension, Steering, Climate Control (HVAC), Electrical System, Body and Frame, SRS (Airbag) System, Audio System, Lighting System, Instrumentation, Diagnostic Procedures, Wiring Diagrams
Procedures Included:
Routine Maintenance, Inspections, Troubleshooting, Diagnostic Procedures, Component Removal and Installation, Repair Procedures, Adjustments, System Overhauls, Wiring Harness Repairs, Clutch Service (if applicable), Brake System Bleeding, Suspension Component Replacement, Engine Tuning, HVAC System Servicing, Drivetrain Component Repair, Body Panel Alignment and Repair
Technical Depth:
Factory-level technical information, including detailed diagnostic flowcharts, specifications, torque values, and component-specific repair instructions
๐ Manual Specifications
File Format:
Proprietary Software Interface (Accessed via Web Browser)
Print Quality:
N/A (Digital)
Binding Type:
N/A (Digital)
Paper Type:
N/A (Digital)
โ๏ธ Engine Specifications
Engine Code:
A50 (4.6L V8 - Northstar)
Engine Displacement:
4.6 Liters (281 cu. in.)
Engine Configuration:
DOHC V8 (Northstar)
Horsepower Gross:
275 hp @ 6000 rpm
Torque Gross:
300 lb-ft @ 4000 rpm
Engine Code:
L27 (3.8L V6 Naturally Aspirated) - *Note: Primarily for earlier models or base trims, the 1999 model year saw the V6 Supercharged as a prominent option.*
Engine Displacement:
3.8 Liters (230.5 cu. in.)
Engine Configuration:
Naturally Aspirated V6
Horsepower Gross:
205 hp @ 5200 rpm (Estimated for this year, verify with manual)
Torque Gross:
230 lb-ft @ 3600 rpm (Estimated for this year, verify with manual)
Fuel System:
Multi-port Fuel Injection (MPFI)
Fuel Type:
Premium Unleaded Gasoline (91 Octane Recommended)
Ignition System:
Distributorless Ignition System (DIS) with Coil-on-Plug (CoP) technology
Transmission Type:
4-Speed Automatic
Transmission Model:
4T65-E (for V6 engines)
Optional Transmission:
None offered
Transmission Features:
Front-wheel drive (FWD), electronic control, lock-up torque converter, performance shift modes (potentially)
Curb Weight:
3,760 - 3,920 lbs (approx., depending on engine and options)
NHTSA Frontal Driver Impact Rating:
4-star (1999 model year)
NHTSA Frontal Passenger Impact Rating:
4-star (1999 model year)
Airbags:
Dual front airbags, optional side-impact airbags
Seat Belts:
Front 3-point seat belts with pretensioners, rear 3-point seat belts
Child Safety:
Rear door child safety locks, LATCH anchor points (check manual for exact implementation)
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Optional Traction Control System (TCS)
Infotainment Features:
Optional premium audio systems (e.g., Bose), CD player, cassette player, analog/digital displays.
Driver Assistance Features:
Optional OnStar communication system, electrochromic rearview mirror, automatic climate control.
Connectivity Features:
OnStar system for emergency services and vehicle diagnostics.
Oil Change Interval:
Every 3,000-7,500 miles or 3-6 months (depending on oil type and driving conditions - consult manual)
Tire Rotation Interval:
Every 5,000-7,500 miles
Spark Plug Replacement Interval V6:
Approx. 100,000 miles (if platnium/iridium)
Spark Plug Replacement Interval V8:
Approx. 100,000 miles (if platnium/iridium)
Timing Belt Replacement Interval:
N/A (Chain-driven engines)
Engine Oil Type:
SAE 5W-30 Synthetic Blend or Full Synthetic (Consult manual for exact viscosity and API classification)
Coolant Type:
GM P/N 12346340 (Orange) or equivalent Dex-Coolยฎ extended life coolant (50/50 mix with distilled water)
Transmission Fluid Type:
Dexron III (ATF) or Dexron VI for 4T80-E / 4T65-E (Consult manual for precise specification)
Power Steering Fluid Type:
GM P/N 89988026 (Synthertic) or equivalent Dexron III (Consult manual)
Known Issues:
Northstar engine coolant leaks (intake manifold gaskets, head gaskets), power steering leaks, transmission control module (TCM) issues, window regulator failures, PCM capacitor degradation, exhaust manifold leaks, rear main seal leaks (Northstar).
Brand Heritage:
Oldsmobile, a division of General Motors, had a long history of innovation and producing reliable vehicles, though by the late 1990s, it was positioned to appeal to a more mature demographic before its eventual discontinuation.
Model Evolution:
The second-generation Aurora was a significant redesign from the first. It moved to the G-body platform, offering a more refined driving experience, updated styling, and the availability of the potent Northstar V8 engine, which was a key differentiator.
Production Years:
1995-2003
Manufacturing Location:
General Motors Fairfax Assembly Plant, Kansas City, Kansas
๐ Awards & Recognition
Recognitions:
The Northstar V8 engine was generally well-regarded for its power and refinement. The Aurora itself was often praised for its comfortable ride and luxurious appointments, especially considering its price point.
