🏷️ Basic Information Identification Make: GMC Model: C3500 Year: 1990 Chassis Type: C/K Series (GMT400) Body Style: Heavy Duty Pickup Truck Trim Level: C3500 (indicated by product title) Codes Platform Code: GMT400 👋 Introduction Market Position Target Audience: DIY enthusiasts, independent repair shops, fleet maintenance. Competitive Analysis Advantage Over Print: Convenience, instant access, searchability, potentially lower cost than original OEM manuals, always up-to-date within the licensed period. Key Features Licensing: Officially licensed, derived from OE (Original Equipment) materials, ensuring accuracy and completeness. Platform Compatibility: Compatible with PC, laptop, smartphone, and tablet devices. Developer: RepairSurge 📋 Manual Details Coverage Areas Coverage Scope: Comprehensive Service and Repair Geographic Scope: North America (implied by OE licensing and GMC market) Page Count Estimated Pages: Extensive (Software providing access to OE-level data, typically thousands of pages in original format) Manual Type Type: Service and Repair Manual Software Language Language: English Format Format: Online/Digital (Web Browser Accessible) Access Method: Internet Connection and Web Browser Access Duration Duration: 1 Year (with options for renewal discounts) 📖 Manual Coverage Systems Covered Engine Service: Full diagnostic, repair, and overhaul procedures for all available engines. Drivetrain Service: Covers manual and automatic transmissions, transfer cases (if applicable), drive axles, and differentials. Suspension Steering: Detailed repair procedures for front and rear suspension components, steering gear, linkages, and power steering systems. Brake Systems: Comprehensive coverage of hydraulic brake systems, including disc and drum brake components, parking brake, and ABS (if equipped). Electrical Systems: Extensive wiring diagrams, component locations, diagnostic procedures for lighting, ignition, charging, starting, and accessories. Heating Air Conditioning: Service and repair information for HVAC systems, including refrigerant circuits, climate control components, and blower motor. Body And Chassis: Information on body panels, doors, interior trim, glass, and chassis components. Procedures Included Maintenance Schedules: Factory-recommended maintenance intervals for various service items. Troubleshooting Guides: Systematic diagnostic procedures for identifying and resolving common and complex issues. Repair Procedures: Step-by-step instructions for component removal, installation, and adjustment. Diagnostic Trouble Codes: Explanation and interpretation of OBD-I diagnostic codes. Wiring Diagrams: Detailed and specific wiring diagrams for all vehicle electrical systems, crucial for diagnosing faults. Torque Specifications: Precise torque values for all critical fasteners across engine, chassis, and body components. Special Tools: Identification and usage guidelines for specialized tools required for certain repair procedures. Engine Rebuild: Comprehensive instructions for engine disassembly, inspection, component replacement, and reassembly. Transmission Rebuild: Detailed steps for overhauling automatic and manual transmissions, including clutch pack replacement and valve body service. Diagnostic Charts: Flowcharts and tables to systematically diagnose symptoms and pinpoint the root cause of malfunctions. Technical Depth Depth: OE-Level (Factory-derived, covering everything from basic maintenance to complete engine and transmission rebuilds). 📊 Manual Specifications File Format File Type: Proprietary Software accessed via Web Browser Print Quality Print Ability: Pages are typically printable from within the software. Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) Searchability Text Search: Highly searchable text within the online platform. ⚙️ Engine Specifications Primary Engine Engine Options: Typically included 5.7L V8 (350 ci) TBI, 7.4L V8 (454 ci) TBI. Potential for other gasoline or diesel engines depending on specific configuration. Performance Horsepower Torque: Varies by engine. For example, the 5.7L V8 typically produced around 175-200 horsepower and 300-320 lb-ft of torque. Fuel System Fuel Delivery: Throttle Body Injection (TBI) for gasoline engines. Cooling System Coolant Type: GMC/GM specification antifreeze (e.g., Dex-Cool or equivalent for later models, but likely conventional green ethylene glycol for 1990). Lubrication System Oil Type: API service SF or SG rated, SAE 10W-30 or 10W-40 recommended for most gasoline engines. Consult manual for specific viscosity based on temperature. Ignition System Ignition Type: Electronic Ignition System (EIS) with distributor. 🔧 Transmission Standard Transmission Options: Likely manual transmissions (e.g., 4-speed, 5-speed) and heavy-duty automatic transmissions (e.g., TH400, 4L80-E) depending on configuration. Optional Optional Transmissions: 4-speed automatic (e.g., 4L80-E) often paired with larger engines or heavy-duty applications. Features Transmission Fluid: Dexron III (or equivalent) for automatic transmissions. Manual transmission fluid (MTF) as specified by GM for manual gearboxes. 📐 Dimensions Exterior Wheelbase: Varies, common configurations include 130-inch and 159.5-inch for 2WD models. Weights Curb Weight: Varies significantly by configuration, typically starting around 4,500 - 5,000 lbs and upwards for heavy-duty models. Gvwr: Gross Vehicle Weight Rating (GVWR) would be specified based on payload and configuration, typically exceeding 8,600 lbs for C3500. 🛡️ Safety Features Ratings Crash Test Data: NHTSA and IIHS data for 1990 C/K trucks is limited by modern standards. The GMT400 platform was designed with improved safety over its predecessor, but specific ratings may not be readily available. Active Features ABS: Anti-lock Braking System (ABS) was available as an option, typically on rear wheels or all four wheels depending on configuration. Passive Features Seat Belts: Standard lap and shoulder belts. 💡 Technology Features Infotainment Audio System: Basic AM/FM radio with cassette player....