🏷️ Basic Information Identification Make: Chevrolet Model: C/K Year: 1990 Codes Platform Code: GMT400 👋 Introduction Market Position Segment: Full-size Pickup Truck and Sport Utility Vehicle (SUV) Target Audience: Commercial fleets, work trucks, families needing robust transportation. Competitive Analysis Key Competitors: Ford F-Series, Dodge Ram Key Features Vehicle Reputation: Known for durability, towing capacity, and robust construction. Manual Value Proposition: Provides factory-level diagnostic and repair information, essential for accurate and efficient servicing. 📋 Manual Details Coverage Areas Primary Coverage: All C/K models (1500, 2500, 3500) and body styles (Pickup, Chassis Cab, Suburban, Blazer) Engine Coverage: 4.3L V6, 5.0L V8, 5.7L V8, 7.4L V8 Transmission Coverage: 4-speed Manual, 5-speed Manual, 4-speed Automatic (700R4/4L60, 4L80E) Page Count Estimated Page Count: ~1500-2000 pages (typical for comprehensive dealer manuals of this era) Manual Type Type: Factory Service Manual (FSM) / Repair Manual Language Language: English Format Format: Printed 📖 Manual Coverage Systems Covered Engine Mechanical: Engine assembly, disassembly, rebuild procedures, cylinder head, pistons, crankshaft, camshaft, timing, lubrication system, cooling system, fuel delivery, intake/exhaust manifolds. Engine Performance: Fuel injection systems (TBI, CSFI), ignition system, emission control systems, diagnosis of drivability issues. Transmission Manual: Clutch, transmission removal/installation, internal component overhaul, shifting mechanisms. Transmission Automatic: Transmission removal/installation, torque converter, internal hydraulic circuits, valve body, seals, bands, clutches, electronic controls (where applicable). Drivetrain: Driveshafts, universal joints, rear axle assembly, differential, front axle (4WD models), wheel bearings, hubs. Suspension: Front suspension (independent or solid axle depending on model/trim), rear suspension (leaf springs), shock absorbers, ball joints, control arms, springs, bushings, alignment specifications. Steering: Power steering system, steering gear/rack, steering column, tie rods, linkage, steering wheel. Brakes: Front disc brakes, rear drum or disc brakes, hydraulic system, master cylinder, brake lines, calipers, wheel cylinders, parking brake, ABS (Anti-lock Braking System) diagnosis and repair (if equipped). Electrical System: Battery, charging system (alternator, regulator), starting system (starter motor), lighting system (headlights, taillights, interior lights), fuses, relays, wiring diagrams for all circuits. Body And Frame: Frame construction, body panel removal/installation, doors, hood, tailgate, glass, bumpers, interior trim, weatherstripping, corrosion protection. Heating Ventilation Air Conditioning HVAC: HVAC system components, blower motor, heater core, A/C compressor, condenser, evaporator, refrigerant, control panels, ducts, diagnostics. Emission Controls: Exhaust gas recirculation (EGR), catalytic converter, oxygen sensors, evaporative emission control (EVAP) system, diagnosis and repair of emission-related fault codes. Procedures Included Preventative Maintenance: Oil changes, filter replacements, fluid checks and top-offs, tire rotation, belt inspection/replacement, spark plug replacement, filter replacements. Troubleshooting: Diagnostic flowcharts for common symptoms (e.g., no-start, poor performance, unusual noises), specific fault code diagnosis. Repair Procedures: Step-by-step instructions for component removal, installation, and adjustment for all major systems. Diagnostics: Diagnostic trouble codes (DTCs), test procedures for sensors and actuators, use of diagnostic tools (e.g., scan tools, multimeters). Specifications And Data: Torque specifications for fasteners, alignment angles, component dimensions, electrical resistance values, pressure readings. Technical Depth Depth: Comprehensive, from basic fluid changes to complete engine and transmission rebuilds, including electrical system diagnostics and wiring diagrams. User Level: Professional Technicians and advanced DIY enthusiasts. 📊 Manual Specifications File Format Digital Format Quality: N/A (Printed Manual) Print Quality Print Quality: High-quality print with clear diagrams and text (typical for OEM manuals) Binding Type Binding: Professional perfect binding or saddle-stitch (typical for FSMs) Paper Type Paper Quality: Durable, matte finish paper designed for workshop environments. ⚙️ Engine Specifications Primary Engine Base Engine: 4.3L (262 cu in) Vortec V6 Engine Options Optional Engines: 5.0L (305 cu in) V8, 5.7L (350 cu in) V8, 7.4L (454 cu in) V8 Performance 4.3L V6 Hp: Approx. 160 hp @ 4000 RPM 4.3L V6 Torque: Approx. 230 lb-ft @ 2400 RPM 5.7L V8 Hp: Approx. 210 hp @ 4000 RPM 5.7L V8 Torque: Approx. 300 lb-ft @ 2400 RPM Fuel System Fuel Delivery: Throttle Body Injection (TBI) or Central Sequential Fuel Injection (CSFI) depending on engine and specific build date. Fuel Type: Unleaded Gasoline 🔧 Transmission Standard Transmission Type: 4-speed Manual (NVG4500 or Getrag variants) Optional Transmission Type: 5-speed Manual, 4-speed Automatic (700R4 / 4L60, 4L80E) Features 4L60 Features: Electronic overdrive, lock-up torque converter. 4L80E Features: Heavy-duty electronically controlled automatic transmission, more robust than 4L60. 📐 Dimensions Exterior Wheelbase Options: 117.5 inches (1500), 131.5 inches (2500/3500), 143.5 inches (2500/3500 Extended Cab) Bed Length Options: 6.5 ft, 8 ft Weights Curb Weight Range: ~4500 - 6000 lbs depending on configuration 🛡️ Safety Features Ratings NHTSA Ratings: Specific ratings for 1990 models are generally not as detailed as modern vehicles. Focus on structural integrity and passive safety features. Active Features Anti Lock Brakes: Available on some models, particularly rear-wheel ABS. Passive Features Seat Belts: Lap and shoulder belts Body Construction: Body-on-frame construction, designed for durability and load-carrying capability. 💡 Technology Features Infotainment Audio System: AM/FM stereo, optional cassette player, optional CD player (late production or aftermarket), basic speaker configurations. Driver Assistance Cruise Control: Available as an option on...