🏷️ Basic Information Identification Make: Oldsmobile Model: Alero Year: 2003 Codes Vin Prefix: 1G3 Generation Generation Identifier: Second Generation (1999-2001), Final Model Year Production (2003) 👋 Introduction Market Position Segment: Compact/Mid-size Coupe and Sedan (Sporty compact) Competitive Analysis Competitors: Ford Focus, Honda Civic, Toyota Corolla, Chevrolet Cavalier, Dodge Neon, Pontiac Sunfire. Key Features Design Philosophy: European-inspired styling, driver-focused cockpit, emphasis on performance and handling for its class. Unique Selling Points: Distinctive styling, availability of a potent V6 engine, good value proposition in its segment. 📋 Manual Details Coverage Areas Trim Levels Covered: All Trims (e.g., GL, GLS, GX) Engine Variants Covered: 2.4L LD9 I4, 3.4L LA1 V6 Page Count Estimated Page Count: 500+ Manual Type Type: Owner's Manual / Service Manual / Repair Guide Language Language: English Format Delivery Method: Digital Download (PDF, ZIP, RAR, EXE) 📖 Manual Coverage Systems Covered Powertrain: Engine, fuel system, cooling system, exhaust system, transmission, drivetrain components. Chassis: Suspension (front and rear), steering system, brake system (front and rear), wheels and tires. Electrical: Battery, charging system, starting system, lighting, instrument panel, HVAC controls, power accessories, infotainment system, body control modules (BCM), anti-theft system. Body And Interior: Body panels, doors, windows, locks, seats, airbags, interior trim, climate control. Procedures Included Maintenance: Routine maintenance, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and replacement, tire rotation, brake pad inspection. Troubleshooting: Diagnostic procedures for common drivability issues, electrical faults, warning lights, and mechanical problems, often with flowcharts. Repair And Rebuild: Detailed step-by-step instructions for component removal, installation, and rebuilding of major systems including engine, transmission, brakes, and suspension. Diagnostics: Information on diagnostic trouble codes (DTCs), scan tool usage, and sensor data interpretation. Technical Depth Depth: Comprehensive, covering everything from basic owner information to in-depth mechanical and electrical repair procedures, suitable for DIY enthusiasts...
Routine maintenance, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspection and replacement, tire rotation, brake pad inspection.
Troubleshooting:
Diagnostic procedures for common drivability issues, electrical faults, warning lights, and mechanical problems, often with flowcharts.
Repair And Rebuild:
Detailed step-by-step instructions for component removal, installation, and rebuilding of major systems including engine, transmission, brakes, and suspension.
Diagnostics:
Information on diagnostic trouble codes (DTCs), scan tool usage, and sensor data interpretation.
Technical Depth
Depth:
Comprehensive, covering everything from basic owner information to in-depth mechanical and electrical repair procedures, suitable for DIY enthusiasts and professional technicians.
📊 Manual Specifications
File Format
Format Options:
PDF, ZIP, RAR, EXE (some may require unzipping software like WinZip or WinRAR).
Print Quality
Printability:
High quality, printable on any computer and printer without restrictions.
Binding Type
Binding:
Not Applicable (Digital Download)
Paper Type
Paper:
Not Applicable (Digital Download)
⚙️ Engine Specifications
Primary Engine
Engine 1 Code:
LD9
Engine 1 Type:
2.4L DOHC Inline 4-cylinder
Engine 1 Horsepower:
150 hp @ 6000 rpm
Engine 1 Torque:
155 lb-ft @ 4400 rpm
Engine 1 Bore X Stroke:
3.50 x 3.82 in (89.0 x 97.0 mm)
Engine 1 Compression Ratio:
9.8:1
Engine 1 Fuel System:
Sequential Fuel Injection (SFI)
Optional Engine
Engine 2 Code:
LA1
Engine 2 Type:
3.4L OHV V6
Engine 2 Horsepower:
170 hp @ 4800 rpm
Engine 2 Torque:
205 lb-ft @ 3200 rpm
Engine 2 Bore X Stroke:
3.50 x 3.62 in (89.0 x 92.0 mm)
Engine 2 Compression Ratio:
9.4:1
Engine 2 Fuel System:
Sequential Fuel Injection (SFI)
🔧 Transmission
Standard
Transmission Type Std:
4-speed automatic transaxle
Optional
Transmission Type Opt:
5-speed manual transaxle (primarily with 2.4L engine)
Features
Automatic Transmission Control:
Electronic control with torque converter lock-up.
📐 Dimensions
Exterior
Length:
180.0 in (4572 mm)
Width:
67.9 in (1725 mm)
Height:
55.4 in (1407 mm)
Wheelbase:
103.4 in (2626 mm)
Front Track:
59.1 in (1501 mm)
Rear Track:
58.9 in (1500 mm)
Weights
Curb Weight Est:
2900-3100 lbs (1315-1406 kg)
🛡️ Safety Features
Ratings
NHTSA Frontal Crash Rating:
4-Star (Driver & Passenger)
IIHS Side Impact Rating:
Acceptable (for models equipped with side airbags)
Active Features
ABS:
Standard on GLS, optional on other trims (check specific vehicle).
Traction Control:
Optional on GLS, standard on some later models or specific packages.
Passive Features
Airbags:
Standard dual front airbags. Optional side-impact airbags were available.
Seatbelts:
Three-point front seat belts with pretensioners, three-point rear seat belts.
💡 Technology Features
Infotainment
Audio System:
AM/FM stereo with cassette and/or CD player. Optional premium sound systems may have been available. Steering wheel audio controls on higher trims.
Driver Assistance
Cruise Control:
Standard on most trims, integrated into the steering wheel or column stalks.
Connectivity
Keyless Entry:
Optional remote keyless entry system.
🔧 Maintenance
Service Intervals
Oil Change Interval Gasoline:
Every 5,000-7,500 miles or 6-12 months, depending on driving conditions and oil type used (refer to manual for specific recommendations).
Engine Coolant Flush:
Every 50,000-60,000 miles or 3-5 years.
Transmission Fluid Change:
Every 50,000-100,000 miles, depending on usage and fluid type (synthetic recommended).
Fluid Specifications
Engine Oil Spec:
API Service SG, SH, SJ, or ILSAC GF-2 certified. Viscosity: SAE 5W-30 recommended for most conditions (check manual for specific temperature ranges and engine variants).
Dexron III H or Dexron VI (recommended for improved performance and longevity) for automatic transmissions.
Power Steering Fluid Spec:
GM specified power steering fluid or Dexron III H.
Known Issues
Common Complaints:
Intake manifold gasket leaks (especially on V6), EGR valve issues, intermittent electrical problems (e.g., power windows, door locks), ABS sensor failures, fuel pump failures, exhaust manifold cracks (V6).
Timing Belt Chain:
2.4L LD9 engine uses a timing chain which is generally more durable than a belt. 3.4L LA1 V6 engine uses a timing chain.
📚 Vehicle History
Brand Heritage
Brand Context:
Oldsmobile, a pioneering American automotive brand known for innovation, was a division of General Motors. The Alero was one of its final models before the brand's discontinuation in 2004.
Model Evolution
Generation Summary:
The Alero was introduced in 1999 as a replacement for the Achieva and Calais. It shared its platform with the Pontiac Grand Am and Chevrolet Malibu. The 2003 model year represented the final production year for the Alero, with minimal changes.
Production
Production Period:
1999-2004
Manufacturing Plant:
Lansing, Michigan, USA
🏆 Awards & Recognition
Recognitions
Consumer Ratings:
Varied consumer ratings, often praised for styling and V6 performance but criticized for interior materials and some reliability concerns.
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