🏷️ Basic Information Identification Make: Chevrolet Model: Avalanche 1500 Year: 2004 Generation Generation: First Generation (GMT800) Codes Platform Code: GMT800 👋 Introduction Market Position Vehicle Segment: Full-Size SUV/Truck Crossover Target Audience: DIY Enthusiasts, Independent Repair Shops Competitive Analysis Key Competitors: Ford Expedition, Dodge Durango, Toyota Sequoia Key Features Unique Selling Proposition: Midgate capability, versatile cargo and passenger configuration Manual Advantage: Officially licensed, OE-derived content, convenient digital access 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive Service and Repair Engine Coverage: 5.3L V8 (LM7/L59) Drivetrain Coverage: 4WD/2WD Powertrain Chassis Coverage: Suspension, Steering, Brakes Electrical Coverage: Wiring Diagrams, Diagnostics Body Coverage: Body and Frame Repair, HVAC Page Count Estimated Page Count: Extensive (Digital format, continuously updated) Manual Type Manual Type: Service and Repair Manual Software Language Language: English Format Format: PDF Download (via web browser access) 📖 Manual Coverage Systems Covered Engine Mechanical: Yes (Cooling, Lubrication, Fuel Delivery, Ignition, Emissions Control, Engine Assembly/Disassembly) Transmission Drivetrain: Yes (4L60-E Automatic Transmission, Transfer Case, Driveshafts, Axles, Differentials) Suspension Steering: Yes (Front Independent Suspension, Rear Multi-Link Suspension, Power Steering System) Brakes Wheels: Yes (Front Disc Brakes, Rear Disc Brakes, ABS System, Parking Brake) Electrical Electronics: Yes (Battery, Charging System, Starting System, Lighting, Fuses, Relays, Powertrain Control Module (PCM), Body Control Module (BCM), Diagnostic Trouble Codes (DTCs), Wiring Diagrams) HVAC: Yes (Air Conditioning, Heater Core, Blower Motor, Controls) Body Chassis: Yes (Frame, Bumpers, Doors, Hood, Tailgate, Seating Systems, Interior Trim) Restraint Systems: Yes (Airbags, Seatbelts) Procedures Included Maintenance Procedures: Yes (Oil Changes, Filter Replacements, Fluid Checks and Changes, Spark Plug Replacement, Belt Inspections) Repair Procedures: Yes (Engine Overhaul, Transmission Rebuilds, Suspension Component Replacement, Brake Service, Electrical Component Diagnosis and Replacement) Diagnostic Procedures: Yes (Troubleshooting guides, DTC interpretation, Component testing) Troubleshooting: Yes (Specific symptoms and likely causes) Technical Depth Depth Of Information: Factory-Level Detail Diagnostic Capabilities: Advanced Diagnostics and Repair Rebuild Procedures: Comprehensive Rebuild Procedures for Major Components 📊 Manual Specifications File Format File Format: PDF Accessibility: Web Browser Accessible (PC, Laptop, Smartphone, Tablet) Print Quality Printability: Printable Pages Binding Type Binding Type: Not Applicable (Digital Download) Paper Type Paper Type: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: LM7 (Flex-Fuel L59 also available) Engine Type: 5.3L V8 Vortec (OHV, 16-valve) Bore X Stroke: 3.78 in x 3.62 in (96 mm x 92 mm) Displacement: 327 cu in (5328 cc) Performance Horsepower: 285 hp @ 5200 rpm Torque: 325 lb-ft @ 4000 rpm Fuel System Fuel Induction: Sequential Multi-Port Fuel Injection (MPFI) Recommended Fuel: 87 Octane Unleaded Gasoline (Flex-Fuel compatible with E85) Ignition System: Distributorless Ignition System (DIS) with Coil-on-Plug (COP) 🔧 Transmission Standard Transmission Type: 4-Speed Automatic (4L60-E) Optional Optional Transmission: None (4L60-E was standard) Features Transmission Features: Electronic Controls, Tow/Haul Mode 📐 Dimensions Exterior Wheelbase: 130.0 inches (3302 mm) Overall Length: 221.4 inches (5624 mm) Overall Width: 79.7 inches (2024 mm) Overall Height: 77.0 inches (1956 mm) Weights Curb Weight: Approx. 5,467 - 5,723 lbs (2480 - 2596 kg) Gross Vehicle Weight Rating Gvw: Approx. 7,000 lbs (3175 kg) 🛡️ Safety Features Ratings NHTSA Front Impact Driver: ★★★★★ NHTSA Front Impact Passenger: ★★★★★ NHTSA Side Impact Front Driver: ★★★★☆ NHTSA Side Impact Front Passenger: ★★★★☆ NHTSA Rollover Rating: ★★★★☆ (4WD) Active Features ABS: Standard (4-wheel disc) Passive Features Airbags: Standard front airbags, Available side-impact airbags Seat Belts: All seating positions equipped with three-point seat belts 💡 Technology Features Infotainment Audio System: Available AM/FM Stereo with CD Player, Optional Bose Premium Audio System Driver Assistance Cruise Control: Standard Park Assist: Optional Rear Parking Assist System Connectivity Power Outlets: Multiple 12V auxiliary power outlets 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,000-5,000 miles or 3-6 months (or based on Oil Life Monitoring System) Transmission Fluid Change: Every 50,000 - 100,000 miles (refer to manual for specific conditions) Spark Plug Replacement: Every 100,000 miles (Platinum or Iridium plugs) Fluid Specifications Engine Oil Type: SAE 5W-30 (API SM or higher) Engine Oil Capacity: 6.0 US quarts (5.7 L) with filter Transmission Fluid Type: Dexron-III (or equivalent) Coolant Type: GM P/N 1052803 or 12347025 (Green or Orange Long-Life Antifreeze) Known Issues Common Complaints: Sway bar end link wear, transmission cooler line leaks, dashboard crack issues (less common on 04 models), LCM module failure. 📚 Vehicle History Brand Heritage Manufacturer: General Motors (GM) Model Evolution Introduction Year: 2002 Design Basis: GMT800 platform, shared with Chevrolet Silverado/GMC Sierra, Tahoe/Yukon Production Assembly Location: Janesville, Wisconsin, USA 🏆 Awards & Recognition Recognitions Previous Awards: While not specific to the 2004 model year, the Avalanche platform received various accolades for its innovation and utility in its early years.