🏷️ Basic Information Identification Make: GMC Model: Sonoma Year: 2003 Body Style: Compact Pickup Truck Generation: Second Generation (2nd Gen) Codes Platform: GMT355 👋 Introduction Market Position Positioning: Comprehensive DIY and professional service resource for the 2003 GMC Sonoma Competitive Analysis Comparison: Superior to outdated printed manuals in terms of convenience, searchability, and updateability (though this specific product is for a single year) Key Features Advantage: Official licensing and OE data derivation ensures accuracy and completeness User Friendliness: Intuitive interface, easily searchable content, and step-by-step instructions Cost Savings: Empowers users to perform repairs and maintenance, saving significant labor costs 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Diagnostic Coverage: Extensive diagnostic procedures and troubleshooting guides Maintenance Coverage: All scheduled maintenance procedures and intervals Repair Coverage: Detailed step-by-step repair instructions for all major components Electrical Coverage: Comprehensive wiring diagrams and electrical system diagnostics Page Count Estimated Page Count: Thousands of pages (digital equivalent) Manual Type Type: Software (Online Service and Repair Manual) Source: Licensed OE (Original Equipment) Materials via RepairSurge Language Language: English Format Format: Web-based, accessible via browser Accessibility: PC, Laptop, Smartphone, Tablet compatible Access Duration: 1 Year access (with option for renewal) 📖 Manual Coverage Systems Covered Engine: Detailed coverage for all gasoline engines, including diagnosis, repair, and overhaul Drivetrain: Covers transmission (automatic and manual), driveshafts, differentials, and axles Suspension: Front and rear suspension components, alignment, and repair Steering: Power steering system, steering column, and linkage Brakes: Hydraulic brake system, ABS, parking brake, and component replacement Electrical: Full electrical system coverage including battery, charging, starting, lighting, accessories, and ECUs Climate Control: HVAC system diagnosis, refrigerant handling, and component repair Body: Body panel repair, interior trim, glass, and doors Chassis: Frame, body mounts, and structural components Procedures Included Troubleshooting: Systematic diagnostic flowcharts for common and uncommon issues Routine Maintenance: Oil changes, filter replacements, fluid checks, tire rotations, spark plug replacement Component Replacement: Detailed instructions for replacing engine components, transmission, brakes, suspension parts, etc. Rebuilds: Engine and transmission overhaul procedures Calibration: Procedures for recalibrating sensors and electronic modules Diagnostics: On-Board Diagnostic (OBD-II) system analysis and specific diagnostic trouble code (DTC) explanations Technical Depth Depth: Comprehensive, from basic maintenance to complete engine/transmission rebuilds Diagnostic Level: Advanced diagnostics requiring specialized tools and knowledge Specifications Detail: Torque specifications, clearances, fluid capacities, and critical measurements 📊 Manual Specifications File Format Software Type: Web Application Data Format: HTML, PDF (for printouts) Print Quality Printability: Optimized for printing specific sections or pages Binding Type Binding: N/A (Digital Access) Paper Type Paper Type: N/A (Digital Access) ⚙️ Engine Specifications Primary Engine Engine Options: 2.2L L4, 4.3L V6 Engine 2 2L Vortec Specs: 4-cylinder, 2.2L (134 cu in), SOHC, MPFI. Horsepower: ~120-140 hp. Torque: ~140-150 lb-ft. Engine 4 3L Vortec V6 Specs: 6-cylinder, 4.3L (262 cu in), OHV, MPFI. Horsepower: ~180-190 hp. Torque: ~245-255 lb-ft. Performance Fuel Delivery: Multi-Port Fuel Injection (MPFI) Fuel System Fuel Type: Unleaded Gasoline Ignition System: Distributorless Ignition System (DIS) or Distributor-based (depending on specific engine variant) 🔧 Transmission Standard Standard Transmission: 5-speed Manual (NV1500, NV3500) Optional Optional Transmission: 4-speed Automatic (4L60E) Features Drivetrain Options: RWD (Rear-Wheel Drive), 4WD (Four-Wheel Drive) available 📐 Dimensions Exterior Wheelbase Short: 108.3 inches (2751 mm) Wheelbase Long: 118.3 inches (3005 mm) Bed Length Short: 6.2 feet (approx. 73.7 inches) Bed Length Long: 7.4 feet (approx. 88.7 inches) Weights Curb Weight Range: Approx. 3500 - 4000 lbs (1588 - 1814 kg), varies by configuration 🛡️ Safety Features Ratings NHTSA Front Impact Driver: 4/5 stars (for 2003 model year, specific testing may vary) NHTSA Front Impact Passenger: 4/5 stars (for 2003 model year, specific testing may vary) Active Features ABS: Anti-lock Braking System (ABS) available, typically on rear wheels or all four Passive Features Airbags: Driver and Passenger front airbags Seatbelts: Front and rear seat belts (with pretensioners) 💡 Technology Features Infotainment Audio System: Standard AM/FM stereo with CD player. Optional premium sound systems and cassette players were available. Driver Assistance Cruise Control: Cruise control was a commonly available option Connectivity Telematics: OnStar was available as an option on some higher trim levels. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 3,000-7,500 miles (5,000-12,000 km) or 6-12 months, depending on oil type and driving conditions Engine Air Filter: Inspect every 15,000 miles (24,000 km), replace as needed or every 30,000 miles (48,000 km) Spark Plugs: Varies by plug type; platinum or iridium plugs typically last 100,000 miles (160,000 km) Fluid Specifications Engine Oil Type 2 2L: SAE 5W-30 API SM or higher, or Dexos (if applicable/recommended by later standards for compatibility) Engine Oil Type 4 3L: SAE 5W-30 API SM or higher, or Dexos Coolant Type: Dex-Cool (Orange) Extended Life Coolant (50/50 mixture with distilled water) Transmission Fluid Auto: Dexron III/VI (GM specification) Transmission Fluid Manual: GL-4 Gear Lubricant (specific viscosity varies) Brake Fluid: DOT 3 or DOT 4...