This manual covers the Chevrolet Blazer, a versatile sport utility vehicle produced for the 2003 model year. Built on the robust GMT360 platform, the Blazer offered a range of powerful Vortec engines, including 4.3L V6 and 4.8L or 5.3L V8 options, paired with either 2WD or 4WD drivetrains. Known for its capable performance and towing capacity, the 2003 Blazer provided a solid and reliable option for various needs, from daily commuting to hauling and recreational activities. Its construction, shared with other notable GM SUVs of the era, contributed to its strong safety ratings for its time, including good performance in front and side impact tests. This comprehensive service and repair manual is designed to assist DIY enthusiasts, home mechanics, and professional technicians in maintaining and repairing the 2003 Chevrolet Blazer. It provides in-depth coverage of all major vehicle systems, including detailed diagnostics and repair procedures for the engine, drivetrain, brakes, suspension, steering, and electrical systems. The manual also covers HVAC, body and chassis components, fuel systems, and exhaust systems. Included are essential maintenance schedules, troubleshooting guides for common and uncommon issues, step-by-step repair instructions, rebuilding procedures, and complete wiring diagrams, all presented for efficient access to information. 🏷️ Basic Information Identification Make: Chevrolet Model: Blazer Year: 2003 Product Type: Service & Repair Manual Software Format: PDF Download 👋 Introduction Market Position Target Audience: DIY enthusiasts, home mechanics, and professional repair technicians. Competitive Analysis Advantage: Official licensing and OE material source ensures unparalleled accuracy and completeness compared to generic aftermarket manuals. Key Features Accessibility: Instant online access via web browser on PC, laptop, smartphone, or tablet. Convenience: Eliminates the need for bulky printed manuals; information is available on-demand. Value: Provides significant cost savings by enabling users to perform repairs and maintenance themselves. Licensing Licensor: RepairSurge (Licensed from OE) Access Period Duration: 1 Year (with discounts for extended access) 📋 Manual Details Coverage Areas Primary Coverage: 2003 Chevrolet Blazer Licensed Information: OE (Original Equipment) Materials Page Count Estimated Pages: Thousands (typical for comprehensive OE service manuals) Manual Type Type: Factory-Derived Service and Repair Manual Language Language: English Format Digital Format: Searchable PDF 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair, and overhaul procedures for all 2003 Blazer engine options. Drivetrain: Covers manual and automatic transmissions, transfer cases (for 4WD models), drive axles, CV joints, and propeller shafts. Brakes: Diagnosis, repair, and maintenance of ABS, hydraulic systems, parking brake, rotors, calipers, and pads. Suspension Steering: Comprehensive coverage of front and rear suspension components, steering gear, power steering system, and alignment procedures. Electrical: Detailed wiring diagrams, troubleshooting guides for lighting, starting, charging, ignition, body controls, and instrument cluster. HVAC: Service and repair of heating, ventilation, and air conditioning systems, including refrigerant handling and component replacement. Body Chassis: Body panel repair, interior trim removal and installation, door mechanisms, glass, and chassis component service. Exhaust: Repair and replacement of exhaust system components, including catalytic converters and mufflers. Fuel: Fuel tank, fuel pump, fuel injectors, fuel lines, and evaporative emissions control system. Procedures Included Maintenance: Scheduled maintenance, fluid changes, filter replacements, belt adjustments, and general upkeep. Troubleshooting: Diagnostic procedures for common and uncommon problems, fault code interpretation, and symptom-based troubleshooting. Repair: Step-by-step repair instructions for virtually all vehicle components, including torque specifications and special tool requirements. Rebuilding: Detailed procedures for engine, transmission, and differential rebuilding. Installation: Correct installation procedures for replacement parts and accessories. Wiring Diagrams: Comprehensive and color-coded wiring schematics for all electrical systems. Technical Depth Depth: Comprehensive: Covers basic maintenance to full engine and transmission rebuilds, including advanced diagnostics. 📊 Manual Specifications File Format Readability: High-resolution PDF, ensuring clear text and diagrams on any screen or printed page. Searchability: Fully searchable text allows for rapid access to specific information. Print Quality Printability: Designed for clear printing of individual pages or sections. Binding Type Binding Virtual: N/A (Digital Download) Paper Type Paper Virtual: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Options: 4.3L V6 (Vortec 4300), 4.8L V8 (Vortec 4800), 5.3L V8 (Vortec 5300) Performance 4.3L V6 Horsepower: ~190 hp @ 4400 rpm 4.3L V6 Torque: ~250 lb-ft @ 2800 rpm 4.8L V8 Horsepower: ~270 hp @ 5600 rpm 4.8L V8 Torque: ~290 lb-ft @ 4000 rpm 5.3L V8 Horsepower: ~285 hp @ 5200 rpm 5.3L V8 Torque: ~325 lb-ft @ 4000 rpm Fuel System Induction: Sequential Fuel Injection (SFI) Ignition: Distributorless Ignition System (DIS) or Coil-Near-Plug 🔧 Transmission Standard Transmission Type: 4-speed Automatic (e.g., 4L60-E) Optional Transmission Type Optional: 4-speed Manual (less common on later models) Features Drivetrain Options: 2WD (RWD) and 4WD (with available Autotrac transfer case) 📐 Dimensions Exterior Body Styles: 2-Door (Sport utility), 4-Door (Sport utility) Wheelbase 2 Door: Approx. 107.0 inches Wheelbase 4 Door: Approx. 113.0 inches Weights Curb Weight Range: Approx. 4,100 - 4,800 lbs (depending on configuration) Towing Capacity: Up to 5,000 - 6,500 lbs (depending on...