🏷️ Basic Information Identification Make: Chevrolet Model: C3500 Year: 1998 Series: C/K Pickup Codes Chassis Code: GMT400 👋 Introduction Market Position Market Position: The 1998 Chevrolet C3500 was a robust and popular heavy-duty pickup truck, often used for commercial purposes, towing, and hauling. This manual serves the needs of owners and technicians working on these reliable workhorses. Competitive Analysis Competitive Analysis: Competitors included the Ford F-350 and Dodge Ram 3500 of the same era. The C3500 was known for its strong chassis and capable powertrains. Key Features Key Features: Licensed OE materials, instant digital access, comprehensive coverage for a wide range of repair and maintenance tasks, compatible with multiple devices. 📋 Manual Details Coverage Areas Coverage Areas: Engine, Transmission, Drivetrain, Suspension, Steering, Brakes, Electrical System, HVAC, Body, Chassis, Diagnostics, Troubleshooting Page Count Page Count: N/A (Digital Access - Licensed OE Material) Manual Type Manual Type: Service and Repair Manual Software Language Language: English Format Format: PDF Download (Web-based access) 📖 Manual Coverage Systems Covered Engine Mechanical: Complete overhaul procedures, component identification, torque specifications, timing procedures for all gasoline engines. Engine Performance: Fuel system diagnostics, ignition system troubleshooting, emissions controls, powertrain control module (PCM) strategies. Transmission Manual: Service and repair of NV3500 (5-speed) manual transmission, including clutch and linkage. Transmission Automatic: Service and repair of 4L60E (4-speed automatic) transmission, including torque converter and external controls. Drivetrain: Front and rear axle servicing, driveshaft, U-joints, and propeller shaft maintenance. Suspension: Front independent suspension (torsion bar), rear leaf spring system, shock absorbers, ball joints, control arms. Steering: Power steering system diagnostics, steering column, tie rods, steering linkage, pump and gearbox service. Brakes: Front disc brakes, rear drum brakes, anti-lock braking system (ABS) components and diagnostics, parking brake. Electrical System: Wiring diagrams for all circuits, charging system, starting system, lighting, instruments, power accessories, fuse and relay locations. HVAC: Air conditioning system servicing, heating system, ventilation, blower motor, refrigerant handling. Body: Body panel repair, door mechanisms, interior trim removal, glass replacement, bumper systems. Chassis: Frame inspection and repair, mounting points, exhaust system, fuel tank and lines. Instrument Panel: Removal and installation of instrument cluster, gauges, warning lights, and related sensors. Doors And Windows: Door panel removal, window regulator and motor replacement, door lock actuator repair. Seats: Seat removal and installation procedures for both bench and bucket seats. Frame And Body: Inspection and minor repair procedures for the truck frame and body mounting points. Procedures Included Maintenance: Scheduled maintenance tasks, fluid changes (oil, coolant, brake fluid, transmission fluid, differential fluid), filter replacements, lubrication. Troubleshooting: Diagnostic charts and flowcharts for common drivability and electrical issues. Repair: Step-by-step repair procedures for major components and systems. Diagnostics: OBD-II diagnostic trouble codes (DTCs) and their interpretation, scan tool usage. Installation: Procedures for replacing key components like alternators, starters, water pumps, fuel pumps, etc. Cooling System: Radiator, water pump, thermostat, heater core, and coolant hose replacement procedures, including bleeding the system. Exhaust System: Catalytic converter, muffler, exhaust pipes, and manifold replacement and repair. Fuel System: Fuel pump replacement, fuel filter replacement, fuel tank servicing, fuel line repair. Ignition System: Spark plug replacement, ignition coil replacement, distributor service (if applicable), wire replacement. Lighting And Accessories: Headlight, taillight, interior light bulb replacement; power window, door lock, and mirror troubleshooting and repair. Technical Depth Technical Depth: Comprehensive factory-derived information suitable for DIY enthusiasts and professional technicians, covering everything from basic fluid checks to full engine and transmission rebuilds. Diagnostic Codes: Coverage of OBD-II diagnostic trouble codes (DTCs) with explanations and troubleshooting steps. Torque Specifications: Detailed torque specifications for all critical fasteners across various systems. Wiring Diagrams: Comprehensive, vehicle-specific wiring diagrams essential for electrical troubleshooting. 📊 Manual Specifications File Format File Format: PDF (Searchable Text) Print Quality Print Quality: High-resolution, clear text and diagrams suitable for printing. Binding Type Binding Type: N/A (Digital Access) Paper Type Paper Type: N/A (Digital Access) ⚙️ Engine Specifications Primary Engine Engine Options: 5.0L (305 cu in) V8 (L30), 5.7L (350 cu in) V8 (L31 Vortec), 7.4L (454 cu in) V8 (L29 Vortec). Performance 5.7L Vortec Horsepower: Approx. 255 hp @ 4600 rpm 5.7L Vortec Torque: Approx. 330 lb-ft @ 2800 rpm 7.4L Vortec Horsepower: Approx. 290 hp @ 4000 rpm 7.4L Vortec Torque: Approx. 410 lb-ft @ 3200 rpm Fuel System Fuel System: Multi-Port Fuel Injection (MPFI) for all gasoline engines. 🔧 Transmission Standard Standard Transmission: 4-speed automatic (4L60E) was common, though a 5-speed manual (NV3500) was also available on some configurations. Optional Optional Transmission: 4-speed automatic (4L80E) often paired with the 7.4L V8. Features Transmission Fluid Spec: Dexron-III (or equivalent) for 4L60E and 4L80E transmissions. 📐 Dimensions Exterior Wheelbase Options: 130.0 inches (Standard Cab), 144.5 inches (Extended Cab) Overall Length: Varies by bed length (e.g., 216.3 inches for short bed, 231.3 inches for long bed) Weights Curb Weight: Approximately 4,500 - 5,500 lbs depending on configuration. Gvwr: Ranges from...