🏷️ Basic Information

Make:

Pontiac

Model:

Grand Prix

Year:

2004

Platform:

W-body

👋 Introduction

Target Audience:

DIY vehicle owners, independent repair shops, and enthusiasts seeking authoritative repair information.

Value Proposition:

Provides the same in-depth, vehicle-specific information used by dealership technicians, offering a cost-effective alternative to professional labor for repairs and maintenance.

Content Source:

Factory-authorized repair manual content.

Format Advantage:

Single, searchable PDF for ease of use, replacing bulky paper manuals; printable pages for field use.

📋 Manual Details

All Models And Trims:

Yes

Estimated Pages:

Extensive (precise count not provided, described as comprehensive)

Type:

Service and Repair Manual

Language:

English

Format:

PDF

Delivery Method:

Speed Download

📖 Manual Coverage

Engine:

Detailed diagnosis, repair, and specifications for all engine variants

Transmission:

Covers both Automatic (e.g., 4T65-E) and Manual transmissions, including diagnosis, repair, and fluid specifications.

Brakes:

Comprehensive coverage of hydraulic brake systems, ABS, and parking brake.

Electrical:

Extensive wiring schematics, component testing, and diagnosis for all electrical systems.

Suspension And Steering:

Detailed procedures for suspension, steering, and wheel alignment.

Climate Control:

Air conditioning system diagnosis, recharge, and repair.

Body And Interior:

Covers door locks, power windows, seats, instrument panel, exterior trim, and more.

Safety Systems:

Supplemental Restraint System (SRS), seat belts, and engine immobilizer.

Fuel And Emissions:

Fuel system service, emission control systems, and related diagnostics.

Diagnostics:

On-Board Diagnostics (OBD-II) procedures and common diagnostic trouble codes (DTCs).

Maintenance:

Routine maintenance procedures, fluid changes, filter replacements.

Repair:

Step-by-step repair instructions for virtually all mechanical and electrical components.

Troubleshooting:

Diagnostic flowcharts and troubleshooting guides for common and complex issues.

Diagnostics And Testing:

Component testing procedures, electrical circuit analysis.

Depth:

Factory-level detailed, covering everything from basic maintenance to advanced diagnostics and complete component rebuilds.

📊 Manual Specifications

File Type:

PDF

Printable:

Yes, individual pages or sections can be printed.

Image Scalability:

Images and diagrams can be blown up for detailed viewing and printing.

Binding:

Digital (PDF), no physical binding

Paper Type:

N/A (Digital Format)

PDF Reader:

Adobe PDF Reader (free download)

Unzipping Utility:

Winzip or compatible (free download)

Operating Systems:

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

⚙️ Engine Specifications

2004 Engine Options:

3.8L V6 (L36/3800 Series II Naturally Aspirated), 3.8L V6 Supercharged (L67/3800 Series II Supercharged)

3.8L V6 (L36) Horsepower:

Approx. 200 hp @ 5200 rpm

3.8L V6 (L36) Torque:

Approx. 225 lb-ft @ 4000 rpm

3.8L Supercharged V6 (L67) Horsepower:

Approx. 240 hp @ 5200 rpm

3.8L Supercharged V6 (L67) Torque:

Approx. 280 lb-ft @ 3600 rpm

Fuel Delivery:

Sequential Fuel Injection (SFI) for all engines.

Fuel Type:

Unleaded gasoline

🔧 Transmission

Automatic Transmission:

4-speed automatic (e.g., 4T65-E)

Manual Transmission:

Less common for 2004, typically automatic was standard across most trims. Manual transmission coverage may vary depending on specific vehicle configuration.

Traction Control:

Available on some models, integrated with ABS and powertrain control.

📐 Dimensions

Wheelbase:

110.5 inches (2807 mm)

Length:

Approx. 199.7 inches (5072 mm)

Width:

Approx. 71.4 inches (1813 mm)

Height:

Approx. 55.5 inches (1410 mm)

Curb Weight:

Varies by trim and engine, typically 3400-3600 lbs (1542-1633 kg)

Gross Vehicle Weight Rating:

Varies by model, check specific vehicle placard.

🛡️ Safety Features

NHTSA Frontal Impact Driver:

5-star (for 2004 Grand Prix)

NHTSA Frontal Impact Passenger:

5-star (for 2004 Grand Prix)

NHTSA Side Impact Front Driver:

4-star (for 2004 Grand Prix)

NHTSA Side Impact Front Passenger:

4-star (for 2004 Grand Prix)

NHTSA Side Impact Rear Driver:

4-star (for 2004 Grand Prix)

NHTSA Side Impact Rear Passenger:

4-star (for 2004 Grand Prix)

IIHS Head Restraint Eval:

Acceptable (for 2004 Grand Prix)

ABS:

Standard Anti-lock Braking System

Traction Control:

Available

Airbags:

Frontal airbags, available side-impact airbags.

Seat Belts:

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

💡 Technology Features

Audio System:

Factory AM/FM stereo with CD player and optional Monsoon premium audio system. Manual covers diagnostics and speaker replacement.

Cruise Control:

Standard cruise control system. Manual covers operation, diagnosis, and repair.

Multiplex Communication:

Includes information on the multiplex/CAN communication systems used for various modules and data transfer, essential for modern diagnostics.

ECM Diagnostics:

Detailed diagnostic procedures for the Engine Control Module (ECM) and related sensors/actuators.

🔧 Maintenance

Oil Change Interval:

Typically 7,500 miles or 6 months, using synthetic blend or full synthetic oil (refer to manual for exact recommendations).

Air Filter Replacement:

Inspect every 15,000 miles, replace as needed or every 30,000 miles (or per manual's recommendation based on driving conditions).

Spark Plug Replacement:

For L36: approx. 100,000 miles. For L67 Supercharged: inspect at 100,000 miles, replace as needed with specific plugs (refer to manual).

Engine Oil:

SAE 5W-30 (API certified for specific viscosity grade, check manual for exact API service category).

Transmission Fluid Automatic:

Dexron III/VI (or equivalent meeting GM specification).

Coolant:

GM U-Type (orange) antifreeze or equivalent with the correct silicate and phosphate levels for aluminum engines.

Power Steering Fluid:

GM Power Steering Fluid (PSF) or Dexron III/VI.

Brake Fluid:

DOT 3 (or DOT 4 if specified).

Intake Manifold Gaskets:

Leaking intake manifold gaskets on L36 and L67 engines were a common issue, leading to coolant leaks and engine misfires. This manual would detail their replacement.

Supercharger Coupler Noise:

On L67 Supercharged models, the supercharger snout coupler could develop noise or wear. The manual would cover its inspection and replacement.

Window Regulators:

Power window regulator failures were not uncommon in GM vehicles of this era. The manual details their repair.

Idler Pulley Noise:

Idler pulley bearing failure could lead to a squealing noise. The manual would guide replacement.

📚 Vehicle History

Pontiac Brand Legacy:

Pontiac was known for its performance-oriented vehicles and distinctive styling within the General Motors lineup.

Grand Prix Wbody:

The 2004 Grand Prix is part of the third generation of the W-body platform, known for its comfortable ride and powerful V6 engines, particularly the Supercharged variants.

Manufacturing Location:

General Motors (USA)

Production Years For Wbody:

1997-2003 (this manual covers the 2004 model year, which continued the third generation design until the redesign in 2004 for the 2005 model year).

🏆 Awards & Recognition

Ward 10 Best Engines:

The 3800 Series II V6 (both naturally aspirated and supercharged) was a recipient of Ward's 10 Best Engines award multiple times, underscoring its reputation for reliability and performance.

Consumer Reports Ratings:

Consumer Reports ratings for the 2004 Grand Prix typically reflected a mixed bag, with strengths in powertrain but potential concerns in certain reliability areas common to GM vehicles of the era. The manual assists in addressing these.