Target Audience:
Do-it-yourself (DIY) mechanics, independent repair shops, fleet maintenance personnel.
Comparison To Print:
Offers greater convenience, instant access, and potentially lower cost compared to traditional printed manuals. Eliminates issues of obsolescence or difficulty in finding older printed versions.
Convenience:
Accessible from multiple devices with an internet connection, eliminating the need for physical storage.
Accuracy:
Derived from OE (Original Equipment) materials, ensuring factory-level accuracy.
Breadth Of Coverage:
Covers a wide range of systems and repair procedures for the specified vehicle.
Engine Mechanical:
Engine assembly, cylinder heads, pistons, crankshaft, camshaft, lubrication system, cooling system, exhaust system
Engine Electrical:
Ignition system, fuel injection system (TBI/MPI), emission control systems, starter, alternator, engine sensors
Transmission Drivetrain:
Automatic transmissions (e.g., 4L60E, 4L80E), manual transmissions, transfer case (4WD), drive axles, differentials
Suspension Steering:
Front suspension (independent), rear suspension (leaf springs), steering gear, power steering system, steering column
Brakes:
Front disc brakes, rear drum brakes, hydraulic system, parking brake, ABS (Anti-lock Braking System)
Electrical Chassis:
Lighting system, power windows, power locks, mirrors, horn, wipers, interior and exterior lamps
Electrical Body:
Instrument panel, HVAC controls, audio system, body control modules, wiring diagrams
HVAC:
Heating system, air conditioning system, blower motor, controls, refrigerant handling
Fuel System:
Fuel tank, fuel pump, fuel lines, fuel filter, fuel injectors
Body And Frame:
Body panels, doors, hood, tailgate, interior trim, structural components
Maintenance Procedures:
Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt inspection and replacement
Repair Procedures:
Engine component replacement, transmission overhaul, brake caliper replacement, suspension arm replacement, steering rack repair
Diagnostic Procedures:
Troubleshooting common drivability issues, electrical system diagnostics, DTC (Diagnostic Trouble Code) lookup and interpretation
Specifications Data:
Torque specifications, fluid capacities, clearances, timing settings, diagnostic parameter ranges
Depth Level:
Comprehensive: from basic preventative maintenance to complete engine and transmission rebuilds, including detailed electrical diagnostics and wiring diagrams.
Engine Options:
5.0L V8 (VIN N), 5.7L V8 (VIN R - Vortec), 7.4L V8 (VIN Y - Vortec)
5.0L V8 Torque Approx:
Approx. 275 lb-ft @ 2400 RPM
5.7L Vortec V8 Horsepower:
Approx. 255-260 hp @ 4600 RPM
5.7L Vortec V8 Torque:
Approx. 330-335 lb-ft @ 2800 RPM
7.4L Vortec V8 Horsepower:
Approx. 300-310 hp @ 4000 RPM
7.4L Vortec V8 Torque:
Approx. 410-415 lb-ft @ 3200 RPM
Fuel Delivery Type:
Central Sequential Fuel Injection (CSFI) or Multi-Port Fuel Injection (MPFI) depending on engine and specific production date.
Fuel Type:
Unleaded Gasoline
Oil Change Interval:
Typically every 3,000-5,000 miles or 3-6 months, depending on driving conditions. Refer to manual for specific recommendations based on oil type (conventional vs. synthetic).
Transmission Fluid Change:
Every 30,000-60,000 miles, or as per severe service schedule. Consult manual for exact interval and fluid type.
Coolant Change:
Every 2-5 years or 30,000-100,000 miles (depending on coolant type - traditional green vs. extended life).
Engine Oil Viscosity:
Typically SAE 5W-30 for most conditions. Check manual for specific engine recommendations and operating temperature ranges.
Transmission Fluid Type:
Dexron III/Mercon (for 4L60E/4L80E automatics)
Coolant Type:
Ethylene glycol-based, typically green in color (traditional type).
Common Wear Items:
Ball joints, tie rod ends, brake wear, power steering components, exhaust system corrosion.
Common Engine Issues:
Intake manifold gasket leaks (especially on Vortec V8s), oil pressure sending unit failures, CPI/CSFI spider injector issues (early models).
Common Transmission Issues:
Torque converter shudder, transmission fluid leaks, internal wear on high-mileage units.
Gmc Legacy:
GMC, a division of General Motors, has a long history of producing trucks and commercial vehicles, known for durability and capability.
K Series Lineage:
The K-series represented GMC's full-size, four-wheel-drive trucks, a lineage that has evolved into the modern Sierra pickup.
Gmt400 Platform:
The 1998 K2500 is part of the GMT400 platform, which saw production from 1988-2000, known for its significant redesign and improved aerodynamics over its predecessor.
