🏷️ Basic Information Identification Make: GMC Model: K2500 Year: 1997 Codes Chassis Code: GMT400 👋 Introduction Market Position Target Audience: DIY enthusiasts, independent repair shops, fleet maintenance Competitive Analysis Advantage: Licensed OE data, up-to-date digital format, extensive coverage, cost-effective compared to printed manuals or subscription services. Key Features Licensing: Officially licensed, derived from OE materials Access Duration: 1-Year access included, discounts for additional years 📋 Manual Details Coverage Areas Primary Coverage: Full Service and Repair Diagnostic Coverage: Engine, Transmission, ABS, Airbag, Body Control Module Page Count Estimated Pages: Detailed coverage equivalent to ~2000+ printed pages Manual Type Type: Online Service and Repair Manual Software Language Language: English Format Format: Web-based Access (PC, Laptop, Smartphone, Tablet compatible) 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair procedures, component removal/installation for all applicable engines (5.0L V8, 5.7L V8, 7.4L V8) Drivetrain: Front axle, rear axle, driveshaft, transfer case (4WD), differential, hubs, bearings Transmission: Automatic (4L60E, 4L80E) and Manual (NV4500) transmission diagnostics, repair, and overhaul Suspension: Front independent suspension (torsion bar), rear solid axle, springs, shocks, control arms, ball joints, bushings Steering: Power steering system, steering gear, steering column, tie rods, drag links Brakes: Front disc brakes (ABS optional), rear drum brakes, parking brake, hydraulic system, ABS system diagnosis and repair Electrical: Wiring diagrams, component testing, charging system, starting system, lighting, instrumentation, body electrical, fuses, relays HVAC: Air conditioning system diagnosis, refrigerant handling, heater core, blower motor, climate control system Body: Body panels, doors, windows, latches, interior trim, bumpers, grille, mirrors Procedures Included Maintenance: Oil change, filter replacement, fluid checks and changes, tire rotation, lubrication, scheduled maintenance intervals Troubleshooting: Diagnostic flowcharts, symptom-based troubleshooting for all major systems Repair: Step-by-step repair instructions for component removal, replacement, and adjustment Diagnostics: OBD-II diagnostic trouble codes (DTCs), sensor testing, actuator testing, scan tool procedures Technical Depth Depth: Comprehensive, from basic preventative maintenance to full engine and transmission rebuilds, including detailed electrical diagnostics 📊 Manual Specifications File Format Access Method: Web Browser Access Print Quality Digital Quality: High-resolution, licensed OE data Binding Type Binding: N/A (Digital) Paper Type Paper Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine Engine Options: 5.0L (305 cu in) V8 (L05/L31), 5.7L (350 cu in) V8 (LT1/L31), 7.4L (454 cu in) V8 (L29) Performance 5.7L V8 Horsepower: Approx. 255 hp @ 4600 rpm (L31 Vortec) 5.7L V8 Torque: Approx. 330 lb-ft @ 2800 rpm (L31 Vortec) 7.4L V8 Horsepower: Approx. 290 hp @ 4000 rpm (L29 Vortec) 7.4L V8 Torque: Approx. 410 lb-ft @ 2400 rpm (L29 Vortec) Fuel System Fuel Delivery: Multi-port Fuel Injection (MPFI) / Throttle Body Injection (TBI on some older variants/models within the generation) 🔧 Transmission Standard Transmission Options: 4-speed Automatic (4L60E, 4L80E), 5-speed Manual (NV4500) Optional Transmission Note: Specific transmission availability varied by engine and GVWR. Features 4L80E Features: Heavy-duty automatic, electronically controlled, overdrive Nv4500 Features: 5-speed manual with overdrive and a granny gear, known for durability 📐 Dimensions Exterior Body Styles: Regular Cab, Extended Cab, Crew Cab (less common) Bed Styles: Fleetside (Standard Bed, Long Bed) Weights Gvwr Range: Typically 8500 lbs to 9700 lbs depending on configuration Curb Weight Range: Approx. 5000 - 6000 lbs 🛡️ Safety Features Ratings NHTSA Ratings: Specific NHTSA ratings for 1997 may vary; generally considered robust for its class. Not directly comparable to modern vehicles due to different testing protocols. Active Features ABS: Anti-lock Braking System (ABS) available, typically 4-wheel ABS on later models/configurations. Passive Features Airbags: Driver-side airbag standard. Seat Belts: Three-point front seat belts, lap belts in rear (if equipped). 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo with cassette tape player, optional CD player. Speaker configurations varied. Driver Assistance Cruise Control: Standard on most models. Connectivity OBD Ii: OBD-II compliant, allowing for electronic diagnostics and code reading. 🔧 Maintenance Service Intervals Oil Change Interval: Typically 3,000 - 5,000 miles or 3-6 months, depending on driving conditions (refer to manual for specific recommendations based on engine and oil type). Transmission Fluid Change: Recommended every 30,000 - 60,000 miles for automatic transmissions, depending on usage. Manual transmissions less frequent. Coolant Flush: Every 30,000 - 50,000 miles or 2-3 years for traditional green coolant; extended life coolants may have longer intervals. Fluid Specifications Engine Oil 5.7L: API SG or SH, SAE 5W-30 or 10W-30 (check manual for specific viscosity by temperature) Engine Oil 7.4L: API SG or SH, SAE 10W-30 (check manual for specific viscosity by temperature) Transmission Fluid 4L60E/4L80E: Dexron III / Mercon Transfer Case Fluid: Typically GM Auto-Trak II (or equivalent) for NP246, or Dexron III for NP241. Known Issues Common Wear Items: Ball joints, tie rod ends, idler arm (especially on 4WD models), intake manifold gaskets (Vortec engines), flexplate crack (in some early 5.7L Vortec engines), rear axle seal leaks. Electrical Common Failures: Window motor regulators, blower motor resistor, dash cluster illumination. 📚 Vehicle History Brand Heritage Gmc...