🏷️ Basic Information

Make:

Chevrolet

Model:

Impala

Year:

2003

Chassis Code:

W-body

Vin Digit 8 Engine Code:

1 (3.4L V6 VIN G), G (3.8L V6 Supercharged VIN 1)

👋 Introduction

Target Audience:

DIY enthusiasts, independent repair shops, and Chevrolet Impala owners seeking detailed maintenance and repair information.

Value Proposition:

Provides instant, digital access to comprehensive repair information, offering a cost-effective and convenient alternative to traditional paper manuals, with added benefits of portability and lifetime protection.

Digital Access:

Instant download after payment, accessible on smartphones and other devices for on-the-go repairs.

Environmental Benefit:

Saves trees by offering a digital format.

Support:

Lifetime Protection Policy for lost or damaged downloads.

📋 Manual Details

Covered Versions:

All versions of the 2003 Chevrolet Impala Automobiles

Estimated Page Count:

Extensive (Exact count not provided, but implies comprehensive coverage)

Type:

Repair Manual, Owners Manuals, Parts Catalogs (Downloadable content includes repair and maintenance information)

Language:

English

Format:

Electronic Downloadable PDF

📖 Manual Coverage

Engine Systems:

Engine Removal and Installation, Fuel System, Lubrication and Cooling System, Engine Specifications, Intake & Exhaust

Powertrain Systems:

Transmission, Drive Chain & Sprockets (Note: Drive Chain & Sprockets is atypical for Impala, likely a generic description for broader catalog)

Chassis Systems:

Steering System, Shocks

Body And Electrical:

Body Work, Electrical System

Troubleshooting:

Advanced Troubleshooting

Maintenance Procedures:

Routine Maintenance

Repair Procedures:

Engine Repair, Transmission Repair, Steering Repair, Shock Replacement, Body Repair, Electrical Diagnosis and Repair

Diagnostic Procedures:

Advanced Troubleshooting

Depth:

Comprehensive, covering routine maintenance to advanced repairs and diagnostics

📊 Manual Specifications

Type:

PDF

Searchability:

Likely searchable text within PDF for efficient information retrieval

Printability:

Printable pages, allowing users to print specific sections as needed

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Option 1:

3.4L (3350cc) V6 OHV (LA1)

Engine Option 2:

3.8L (3791cc) V6 OHV Supercharged (L67)

Horsepower 3.4L:

180 hp @ 5200 rpm

Torque 3.4L:

205 lb-ft @ 4000 rpm

Horsepower 3.8L Supercharged:

240 hp @ 5200 rpm

Torque 3.8L Supercharged:

280 lb-ft @ 3600 rpm

Injection Type:

Sequential Port Fuel Injection (SFI)

Fuel Type:

Unleaded gasoline

Ignition System:

Distributorless Ignition System (DIS) with individual coil packs

🔧 Transmission

Transmission Option 1:

4-speed automatic (4T65-E)

Transmission Option 2:

4-speed automatic with overdrive (4T65-E HD for Supercharged models)

Traction Control:

Available Traction Control System (TCS)

Transmission Fluid Type:

Dexron-III (or equivalent)

📐 Dimensions

Length:

199.7 inches (5072 mm)

Width:

72.7 inches (1847 mm)

Height:

57.0 inches (1448 mm)

Wheelbase:

110.5 inches (2807 mm)

Curb Weight Est 3.4L:

3550 lbs (1610 kg)

Curb Weight Est 3.8L S/C:

3700 lbs (1678 kg)

Trunk Volume:

16.9 cubic feet (479 L)

🛡️ Safety Features

NHTSA Front Impact Driver:

★★★★★ (5/5)

NHTSA Front Impact Passenger:

★★★★★ (5/5)

IIHS Moderate Overlap Frontal Offset:

Good

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Optional Traction Control System (TCS)

Airbags Front:

Standard front-seat airbags

Airbags Side:

Optional front-seat side-impact airbags

Seatbelts:

Front and rear seatbelts with pretensioners

💡 Technology Features

Audio System:

Available AM/FM stereo with CD player, cassette player, and premium speaker systems.

Climate Control:

Manual or optional automatic climate control.

Cruise Control:

Standard cruise control.

Onstar:

Optional OnStar system available.

🔧 Maintenance

Oil Change Interval:

Every 7,500 miles (12,000 km) or 6 months, whichever comes first (using synthetic oil recommended).

Air Filter Replacement:

Inspect every 7,500 miles, replace as needed (typically every 30,000 miles).

Spark Plug Replacement 3.4L:

Platinum-tipped spark plugs recommended replacement at 100,000 miles.

Spark Plug Replacement 3.8L S/C:

Platinum-tipped spark plugs recommended replacement at 100,000 miles (ensure correct heat range for supercharged application).

Engine Oil Type:

SAE 5W-30 (API Service SG or higher)

Coolant Type:

GM specified orange coolant (Dex-Cool) or equivalent.

Brake Fluid Type:

DOT 3

Intake Manifold Gaskets:

Potential for coolant leaks due to failing intake manifold gaskets (especially on 3.4L engines).

Idler Pulley Noise:

Idler pulley bearing can fail, causing noise.

Transmission Shifting Issues:

Some models may experience rough shifting or delayed engagement, often related to transmission fluid and filter changes or electronic control module.

Supercharger Coupler Failure:

On supercharged models, the supercharger snout coupler can wear out, leading to reduced power and noise.

📚 Vehicle History

Chevrolet Legacy:

Chevrolet, a division of General Motors, has a long history of producing popular American sedans, including the Impala nameplate which has been a significant model for decades.

Impala Lineage:

The 2003 Impala is part of the eighth generation of the Chevrolet Impala, which debuted in 2000, marking a significant shift in design and platform compared to its predecessors.

Manufacturing Location:

Oshawa, Ontario, Canada

Production Years Current Gen:

2000-2005

🏆 Awards & Recognition

Car And Driver Ten Best:

The 2003 Impala LS Supercharged was named to Car and Driver magazine's 10Best Trucks list for 2003, highlighting its performance value.