🏷️ Basic Information Identification Make: Holden / Pontiac Model: Monaro / GTO Model Years Covered: 2004, 2005, 2006 Codes Platform Code: GM Zeta Platform Internal Chassis Code: V2 (Holden), VY/VZ Series (Holden basis) 👋 Introduction Market Position Positioning: A powerful, rear-wheel-drive coupe that revived the iconic GTO nameplate for the North American market, while continuing its lineage as the Holden Monaro in Australia. Targets enthusiasts seeking performance and a distinctive muscle car experience. Competitive Analysis Competitors: Ford Mustang, Chevrolet Camaro (prior generations), Dodge Challenger (later generation). Key Features Performance Focus: Emphasis on V8 engine power, rear-wheel-drive dynamics, and a driver-centric experience. Manual Value Proposition: Provides the essential, factory-authorized information for owners and independent mechanics to maintain, diagnose, and repair this performance coupe effectively. 📋 Manual Details Coverage Areas Regions Covered: North America (Pontiac GTO), Australia (Holden Monaro) Page Count Estimated Pages: 1000+ Manual Type Type: Factory Service Repair Workshop Manual Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Powertrain: Engine (LS1, LS2), Transmission (Manual & Automatic), Drivetrain, Exhaust System Chassis: Suspension (Front & Rear), Steering System, Brake System (ABS) Electrical: Wiring Diagrams, Lighting, Instruments, Audio System, Security System, Powertrain Control Module (PCM), Body Control Module (BCM) Body: Exterior Body Panels, Doors, Hood, Trunk, Interior Trim, HVAC System, Seats, Glass Procedures Included Maintenance: Scheduled Maintenance, Oil Changes, Filter Replacements, Fluid Checks & Changes Diagnostics: Troubleshooting Guides, Diagnostic Trouble Codes (DTCs), Symptom-Based Diagnosis Repair: Engine Mechanical Repair, Transmission Overhaul, Suspension Component Replacement, Brake System Overhaul, Electrical Component Repair Installation: Component Replacement Procedures, Aftermarket Part Installation Guidelines (implied) Technical Depth Depth: Comprehensive; covers basic maintenance to full engine and transmission rebuilds, including detailed electrical schematics and diagnostic procedures. 📊 Manual Specifications File Format Compatibility: Windows and macOS Print Quality Printability: High-resolution, printable pages Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) Licensing Usage Rights: Unlimited use on multiple devices, lifetime access ⚙️ Engine Specifications Primary Engine Engine Code 2004: LS1 Engine Displacement 2004: 5.7L (350 ci) Engine Configuration 2004: V8, OHV, 2 Valves per Cylinder Engine Code 2005 2006: LS2 Engine Displacement 2005 2006: 6.0L (364 ci) Engine Configuration 2005 2006: V8, OHV, 2 Valves per Cylinder Performance Horsepower Ls1: 325 hp @ 5200 rpm (approx.) Torque Ls1: 330 lb-ft @ 4000 rpm (approx.) Horsepower Ls2: 400 hp @ 6000 rpm (approx.) Torque Ls2: 395 lb-ft @ 4400 rpm (approx.) Fuel System Injection Type: Sequential Fuel Injection (SFI) Fuel Type: Unleaded Premium Gasoline (91 Octane or higher recommended) 🔧 Transmission Standard Transmission Type 2004: T-56 6-Speed Manual Optional Transmission Type 2004 2006: 4L60-E 4-Speed Automatic Features Clutch Type: Hydraulic Actuated Rear Axle Ratio Manual: 3.46:1 (typical) Rear Axle Ratio Auto: 3.08:1 (typical) Fluid Specifications Manual Transmission Fluid: Dexron III-G or equivalent (check manual for exact spec) Automatic Transmission Fluid: Dexron III-G or Dexron VI (check manual for exact spec) 📐 Dimensions Exterior Wheelbase: Approx. 110.2 inches (2800 mm) Length: Approx. 190.5 inches (4839 mm) Width: Approx. 74.7 inches (1897 mm) Height: Approx. 54.6 inches (1387 mm) Weights Curb Weight Manual: Approx. 3700-3800 lbs (1680-1725 kg) Curb Weight Auto: Approx. 3750-3850 lbs (1700-1745 kg) Gross Vehicle Weight Rating: Approx. 4600 lbs (2087 kg) Cargo Trunk Volume: Approx. 15.7 cubic feet (445 Liters) 🛡️ Safety Features Ratings NHTSA Front Impact: 5-Star (Driver & Passenger) - 2005 Model Year IIHS Front Offset: Good Active Features Brakes: 4-wheel disc brakes, ABS (Anti-lock Braking System) Traction Control: Available (TCS) Passive Features Airbags: Frontal airbags (Driver & Passenger), Side-impact airbags (available) Seatbelts: 3-point height-adjustable front seat belts, Pretensioners, Load limiters 💡 Technology Features Infotainment Audio System: Premium AM/FM/CD player with optional subwoofer and amplifier. Instrument Cluster: Analog gauges with driver information center. Driver Assistance Cruise Control: Standard Parking Sensors: Not typically available from factory. Connectivity Bluetooth: Not available from factory; requires aftermarket installation. Usb Ports: Not available from factory; requires aftermarket installation. 🔧 Maintenance Service Intervals Oil Change Interval: Every 7,500 miles (12,000 km) or 12 months, whichever comes first (synthetic oil recommended). Engine Coolant Flush: Every 30,000 miles (48,000 km) or 24 months. Transmission Fluid Change: Automatic: Every 50,000 miles (80,000 km). Manual: Check fluid level periodically, change as needed or every 100,000 miles (160,000 km). Fluid Specifications Engine Oil Capacity: 5.7L: Approx. 5.5 quarts (5.2 L) with filter. 6.0L: Approx. 6.0 quarts (5.7 L) with filter. Engine Oil Type: SAE 5W-30 (Synthetic recommended for optimal performance and protection). Coolant Type: Dex-Cool (Orange, long-life coolant, compatible with aluminum engines). Known Issues Power Steering Pump: Leaking seals or noise can be common. Window Regulators: Can be prone to failure, leading to windows not operating correctly. Clutch Wear: With spirited driving, clutch wear can be accelerated on manual transmission models. Interior Rattles: Some owners report minor interior trim rattles over time. 📚 Vehicle History Brand Heritage Holden Legacy: The Monaro...