🏷️ Basic Information Identification Make: Pontiac Model: Bonneville Years Covered: 2000, 2001, 2002, 2003, 2004, 2005 Generation Chassis Code: L400 👋 Introduction Market Position Segment: Full-size Sedan (American tradition of comfortable, spacious cruising) Competitive Analysis Competitors: Ford Crown Victoria, Chevrolet Impala, Chrysler Concorde/LHS, Buick LeSabre Key Features Emphasis: Comfort, spaciousness, powerful V6 and V8 engine options, distinctive styling for its era. Brand Heritage Pontiac Legacy: Pontiac's history of performance-oriented, stylish vehicles, with Bonneville representing the pinnacle of their large sedan offering. 📋 Manual Details Coverage Areas Regions Covered: North America (primarily US and Canada) Page Count Estimated Page Count: Varies based on specific models/engines; typically 1500-3000+ pages for a comprehensive service manual Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital Download (PDF) 📖 Manual Coverage Systems Covered Engine: 3.8L (VIN 1, L36) & 3.8L Supercharged (VIN X, L67) V6; 4.6L Northstar V8 (optional for some years/trims) Transmission: 4T65-E (4-speed automatic) – FWD Brakes: Front disc (Vented), Rear disc (Solid), ABS, Traction Control (TCS/ASR) Suspension: Front MacPherson strut, Rear independent trailing arm Steering: Rack and pinion, power assisted Electrical: Body Control Module (BCM), Powertrain Control Module (PCM), instrument cluster, lighting, power accessories, audio systems, security system HVAC: Manual and Automatic Climate Control systems Body And Trim: Exterior panels, interior trim, doors, windows, seating, airbags Procedures Included Maintenance: Oil change, filter replacement, fluid checks and top-offs, belt inspection/replacement, spark plug replacement, tire rotation Diagnostics: Troubleshooting guides, DTC (Diagnostic Trouble Code) interpretation, component testing procedures Repair: Engine component repair/replacement (e.g., head gaskets, water pump), transmission overhaul, brake system repair, suspension component replacement, electrical component diagnosis and repair Assembly Disassembly: Detailed step-by-step instructions for removing and reinstalling major components and sub-assemblies Technical Data And Specifications: Torque specifications, clearances, fluid capacities, wiring diagrams, schematics, component identification Technical Depth Depth: Comprehensive: Covers routine maintenance, detailed diagnostics, component-level repair, and some advanced troubleshooting. 📊 Manual Specifications File Format File Type: PDF Print Quality Printability: Printable (individual sections or full document) Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine 3.8L V6 (L36): Naturally aspirated, 205 hp @ 5200 rpm, 230 lb-ft torque @ 4000 rpm Optional Engine 3.8L Supercharged V6 (L67): Supercharged, 235 hp @ 5000 rpm, 260 lb-ft torque @ 3600 rpm (in Bonneville applications) 4.6L V8 (Northstar): DOHC V8, approximately 275 hp, 300 lb-ft torque (specific figures may vary by year and calibration) Fuel System Injection Type: Sequential Multi-Port Fuel Injection (MPI) Cooling System Coolant Type: Dex-Cool (Orange) 50/50 mix with distilled water Ignition System Spark Plugs: ACDelco 41-990 (or equivalent plat/iridium) 🔧 Transmission Standard Type: 4-speed automatic (4T65-E) Optional Type: N/A (All Bonneville models of this generation were automatic) Features Transaxle: Front-wheel drive Fluid Type Fluid Specification: Dexron-VI (recommended for later model compatibility, though Dexron-III was original spec) 📐 Dimensions Exterior Wheelbase: 112.2 inches (2850 mm) Length: Approx. 203 inches (5156 mm) Width: Approx. 74.4 inches (1890 mm) Height: Approx. 56.4 inches (1433 mm) Weights Curb Weight: Approx. 3500-3800 lbs (1588-1724 kg), varies by engine and trim Gross Vehicle Weight Rating Gvwr: Approx. 4800-5000 lbs (2177-2268 kg) 🛡️ Safety Features Ratings NHTSA Front Crash Rating: Good (for its era, specific testing varied) NHTSA Side Crash Rating: Acceptable (varies by year and specific test) Active Features ABS: Standard Anti-lock Braking System Traction Control: Traction Control System (TCS) or Active Handling System (AHS) often available or standard on higher trims. Passive Features Airbags: Driver and front passenger airbags, optional side-impact airbags Seatbelts: Three-point seatbelts with pretensioners 💡 Technology Features Infotainment Audio System: Factory AM/FM/CD player, optional premium audio systems (e.g., Bose), steering wheel audio controls on higher trims. Climate Control: Available Automatic Climate Control (dual-zone on some models) with digital display. Driver Assistance Cruise Control: Standard cruise control Keyless Entry: Available keyless entry system with remote fob. Connectivity Onstar: OnStar communication system available on some models, integrated into the rearview mirror. 🔧 Maintenance Service Intervals Oil Change: Every 5,000 - 7,500 miles (or 6-12 months) depending on driving conditions and oil type (synthetic recommended for longer intervals). Transmission Fluid Flush: Approximately every 30,000 - 60,000 miles, or as per manual recommendations. Coolant Flush: First flush at 100,000 miles, then every 50,000 miles thereafter (Dex-Cool). Spark Plugs: Platnium/Iridium plugs typically rated for 100,000 miles. Fluid Specifications Engine Oil Capacity: 4.5 US quarts (4.3 L) with filter for 3.8L V6; 4.5 US quarts (4.3 L) for 4.6L V8 Engine Oil Viscosity: 5W-30 (check owner's manual for exact recommendations based on temperature) Brake Fluid: DOT 3 Known Issues Intake Manifold Gaskets: Leaking intake manifold gaskets (especially on 3800 Series II L36 and L67 engines) can lead to coolant leaks and misfires. The design of these gaskets had a known flaw. Window Regulators: Power window regulators can be a point of failure, leading to windows not...