🏷️ Basic Information Identification Make: Pontiac Model: Grand Prix Year: 1999 Codes Chassis Code: W-body Vin Code: 8th digit identifies engine (e.g., '1' for 3.1L V6, '2' for 3.8L V6 Supercharged, '3' for 3.8L V6) 👋 Introduction Market Position Market Position: Targeted at 1999 Pontiac Grand Prix owners seeking detailed, accurate, and convenient self-service repair information. Positions itself as a superior alternative to outdated printed manuals, emphasizing accessibility, cost-effectiveness, and breadth of coverage. Competitive Analysis Competitive Analysis: Competes with traditional printed service manuals and other digital repair resources. Differentiates itself through its official licensing, comprehensive coverage of all Grand Prix variants for 1999, user-friendly online platform, and a full year of access with renewal options. Key Features Key Features: Officially licensed, OE material derived, web-based accessibility on multiple devices, 1-year access, DIY friendly, covers all major systems, detailed diagnostics and repair procedures, cost savings compared to professional repairs. 📋 Manual Details Coverage Areas Coverage Areas: Engine, Transmission, Drivetrain, Brakes, Suspension, Steering, Electrical System, HVAC, Body, Interior, Diagnostics, Maintenance, Troubleshooting Page Count Page Count: Software-based, accessed online with 1 year of access. Equivalent to several thousand printed pages of technical information. Manual Type Manual Type: Official Service and Repair Manual Software Language Language: English Format Format: Online Software/Web-based Access 📖 Manual Coverage Systems Covered Systems Covered: Engine mechanical (3.1L V6, 3.8L V6, 3.8L V6 Supercharged), Engine control systems (ECM/PCM), Fuel system, Ignition system, Cooling system, Lubrication system, Exhaust system, Automatic transmission (4T65-E, 4T65E-HD), Front-wheel drive axle shafts, Differential, Suspension (Front struts, rear shocks, control arms, bushings), Steering (Power steering system, steering column, rack and pinion), Brakes (Front disc, rear drum/disc depending on trim, ABS), Electrical system (Charging, starting, lighting, instrument cluster, power windows, door locks, mirrors, audio), HVAC system (Air conditioning, heating, climate control), Body panels, Doors, Windows, Seats, Trim, Safety systems (Airbags, seat belts), Diagnostic trouble codes (DTCs), Wiring diagrams Procedures Included Procedures Included: Scheduled maintenance, oil changes, filter replacements, tune-ups, engine diagnosis and repair, transmission service and overhaul, brake system inspection and repair, suspension component replacement, steering system service, electrical system troubleshooting and repair, HVAC system servicing, body panel repair and replacement, interior component removal and installation, airbag system service, diagnostic trouble code retrieval and interpretation, component testing, specifications for torques, clearances, fluid capacities, and pressures. Technical Depth Technical Depth: Comprehensive factory-derived information suitable for DIY enthusiasts and professional mechanics. Covers from basic maintenance tasks to complex engine and transmission rebuilds, including detailed diagnostic procedures and wiring schematics. Highly detailed with precise specifications and step-by-step instructions. 📊 Manual Specifications File Format File Format: N/A (Web-based access) Print Quality Print Quality: N/A (Digital content, viewed via web browser) Binding Type Binding Type: N/A (Digital content) Paper Type Paper Type: N/A (Digital content) ⚙️ Engine Specifications Primary Engine Primary Engine: 3.8L V6 (Naturally Aspirated) Engine Options Engine Options: 3.1L V6 (Naturally Aspirated), 3.8L V6 Supercharged (L67) Displacement Displacement: 3.1L (189 cu in), 3.8L (231 cu in) Horsepower Horsepower: 3.1L V6: 155 hp @ 4800 rpm; 3.8L V6: 190 hp @ 5000 rpm; 3.8L V6 Supercharged: 240 hp @ 5200 rpm Torque Torque: 3.1L V6: 185 lb-ft @ 3200 rpm; 3.8L V6: 225 lb-ft @ 3200 rpm; 3.8L V6 Supercharged: 280 lb-ft @ 3600 rpm Fuel System Fuel System: Multi-port Fuel Injection (MPFI) for all engines Ignition System Ignition System: Distributorless Ignition System (DIS) with Coil-near-plug Cooling System Capacity Cooling System Capacity: Approximately 10.5 quarts (9.9 liters) with a 50/50 mix of Dex-Cool antifreeze Oil Capacity Oil Capacity: 3.1L V6: 4.5 quarts (4.3 L), 3.8L V6: 4.5 quarts (4.3 L) with filter (Consult manual for exact capacities) Recommended Oil Viscosity Recommended Oil Viscosity: 5W-30 (Dexos approved or equivalent synthetic recommended for optimal performance and longevity) Engine Code 3 1L Engine Code 3 1L: LG8 Engine Code 3 8L Na Engine Code 3 8L Na: L36 Engine Code 3 8L Sc Engine Code 3 8L Sc: L67 🔧 Transmission Standard Standard: 4-speed automatic (4T65-E) Optional Optional: Heavy Duty 4-speed automatic (4T65E-HD) for supercharged models and some performance trims Features Features: Electronically controlled, overdrive, torque converter clutch Transmission Fluid Capacity Transmission Fluid Capacity: Approximately 10.0 quarts (9.5 L) for a complete fluid change; approximately 3.5-4.0 quarts for a pan drop and filter change (Consult manual for exact capacities) Recommended Transmission Fluid Recommended Transmission Fluid: Dexron III (or Dexron VI as a compatible replacement) automatic transmission fluid Transmission Filter Part Number Transmission Filter Part Number: GM part numbers like 24200975 or equivalent aftermarket. 📐 Dimensions Exterior Exterior Length: Approximately 199.7 inches (5072 mm) Exterior Width: Approximately 71.5 inches (1816 mm) Exterior Height: Approximately 54.5 inches (1384 mm) Wheelbase: Approximately 107.5 inches (2730 mm) Weights Curb Weight: Varies by model and trim, typically ranging from 3,300 to 3,700 lbs (1500 to 1680 kg) Gross Vehicle Weight Rating: Consult vehicle's door jamb sticker or manual, typically around...