🏷️ Basic Information

Make:

GMC

Model:

K2500

Year:

1993

Chassis Code:

GMT400

👋 Introduction

Market Position:

This manual targets owners and independent repair facilities seeking factory-level diagnostic and repair information for the 1993 GMC K2500, a popular heavy-duty pickup truck.

Competitive Analysis:

Competes with other online service platforms and older printed manuals. RepairSurge emphasizes convenience, accessibility, and licensed OE data, distinguishing it from less official or outdated resources.

Key Features:

Licensed OE materials, user-friendly interface, cross-platform compatibility, comprehensive coverage, accessible via internet connection, annual subscription with renewal discounts.

Value Proposition:

Provides substantial cost savings compared to dealership repairs, empowers DIY enthusiasts with professional-grade information, and ensures accurate diagnostics and repairs.

📋 Manual Details

Coverage Areas:

Engine, Transmission, Drivetrain, Brakes, Suspension, Steering, Electrical System, HVAC, Body, Chassis, Emissions, Troubleshooting, Diagnostics, Maintenance

Page Count:

Digital (Specific page count not applicable to software format, but content equivalent to thousands of printed pages)

Manual Type:

Service and Repair Manual Software

Derived From:

Licensed Official Factory Service Manual Information

Language:

English

Format:

Online Software/Web-Based Access

📖 Manual Coverage

Engine Systems:

Engine mechanical, fuel injection, ignition system, cooling system, lubrication system, emission control systems

Transmission Drivetrain:

Automatic transmission (e.g., 4L60E, 4L80E), manual transmission (e.g., NV4500), transfer case (e.g., NP208, NP241), drive shafts, axles, differentials

Chassis Suspension Steering:

Front suspension (independent), rear suspension (leaf spring), steering system (power steering), shocks, struts, bushings, ball joints, tie rods

Brakes Wheels Tires:

Front disc brakes, rear drum brakes, parking brake, ABS system (if equipped), brake system hydraulics, wheel bearings, tire specifications

Electrical Lighting Accessories:

Battery, charging system, starting system, lighting (headlamps, tail lamps, interior), gauges, instrument cluster, power windows, power locks, radio, horn, wipers

HVAC Climate Control:

Air conditioning system, heater, ventilation, climate control unit, blower motor, evaporator, condenser, refrigerant specifications

Body Interior Exterior:

Body panels, doors, hood, tailgate, bumpers, interior trim, seats, glass, seals, paint codes, rust prevention

Emission Control Systems:

Catalytic converter operation, oxygen sensors (O2 sensors), EGR system, evaporative emission control (EVAP) system diagnosis and repair.

Fuel System Components:

Fuel pump, fuel filter, fuel lines, fuel injectors/Throttle Body, fuel pressure regulator.

Maintenance Procedures:

Oil changes, filter replacements, fluid level checks and top-offs, spark plug replacement, air filter replacement, tire rotation, belt inspection and replacement

Repair Procedures:

Engine component replacement (e.g., water pump, alternator, starter), transmission repair, brake caliper/rotor/shoe replacement, suspension component replacement, steering linkage repair, electrical component diagnosis and replacement

Troubleshooting Diagnostics:

Diagnostic trouble codes (DTCs), symptom-based troubleshooting, electrical circuit diagnostics, engine performance diagnostics, HVAC system troubleshooting

Wiring Diagrams:

Detailed electrical wiring diagrams for all major systems, aiding in diagnosing shorts, open circuits, and component failures.

Torque Specifications:

Specific torque values for critical fasteners including engine components, suspension parts, and brake assemblies.

Refrigerant Recharge HVAC:

Procedures for AC system servicing, including refrigerant type (R12 for this era, requiring specific handling) and oil types.

Timing Specifications:

Engine timing procedures, ignition timing settings (if applicable for non-computer controlled ignition). Engine diagnostic timing advance tests.

Technical Depth:

Comprehensive: Covers routine maintenance to complete engine and transmission overhauls, including detailed diagnostic procedures and specifications.

Diagnostic Tools Required:

Basic hand tools, multimeter, fuel pressure gauge, vacuum gauge. Specific diagnostic connectors and potential scan tools for OBD-I systems may be mentioned.

Component Level Detail:

Provides detailed diagrams and instructions for component removal, installation, and adjustment, down to individual parts where applicable.

📊 Manual Specifications

File Format:

Web-based access via browser, compatible with PC, laptop, smartphone, tablet

Print Quality:

N/A (Digital format)

Binding Type:

N/A (Digital format)

Paper Type:

N/A (Digital format)

⚙️ Engine Specifications

Primary Engine Options:

4.3L V6 Vortec (LP4), 5.0L V8 (L03), 5.7L V8 (L05), 7.4L V8 (L19)

5.7L V8 Horsepower:

Approx. 195 hp @ 4000 rpm (L05)

5.7L V8 Torque:

Approx. 325 lb-ft @ 2400 rpm (L05)

7.4L V8 Horsepower:

Approx. 230 hp @ 3600 rpm (L19)

7.4L V8 Torque:

Approx. 380 lb-ft @ 2000 rpm (L19)

Fuel System Type:

Throttle Body Injection (TBI) for 5.0L/5.7L V8; Multi-port Fuel Injection (MPFI) for 4.3L V6 and 7.4L V8 (depending on specific configuration and market)

Recommended Fuel:

Unleaded gasoline (87 octane or higher recommended, check owner's manual for specific requirements)

Engine Code 5.7L V8:

L05

Engine Code 7.4L V8:

L19

🔧 Transmission

Standard Transmission:

4-Speed Automatic (e.g., 4L60E)

Optional Transmission:

5-Speed Manual (e.g., NV4500) for specific configurations

Transmission Fluid Spec:

Dexron-III (or equivalent ATF, check owner's manual for specific DEXRON version and capacity)

📐 Dimensions

Wheelbase:

130.0 inches (Standard Cab), 155.1 inches (Extended Cab)

Overall Length:

Varies based on cab and bed configuration (e.g., ~220 inches for short bed)

Track Width Front:

Approx. 65.1 inches

Track Width Rear:

Approx. 66.0 inches

Curb Weight:

Approximately 4,500 - 5,500 lbs, depending on configuration

Gross Vehicle Weight Rating:

Typically 7,200 - 9,600 lbs (GVWR varies by payload package)

Payload Capacity:

Varies by configuration, typically 2,000 - 3,500 lbs or more for K2500 models.

Towing Capacity:

Varies significantly by engine, axle ratio, and configuration, often exceeding 7,000 lbs.

🛡️ Safety Features

Safety Ratings:

NHTSA ratings for this era are generally not directly comparable to modern standards. Refer to specific crash test data if available from official sources.

Active Safety Features:

Anti-lock Braking System (ABS) - typically rear-wheel only on 2WD models, 4-wheel ABS optional or standard on 4WD models.

Passive Safety Features:

Lap and shoulder seat belts, padded dashboard and steering column.

💡 Technology Features

Infotainment System:

Basic AM/FM radio, cassette player, optional CD player. Limited digital features typical for the era.

Driver Assistance Features:

Limited to ABS on some models. No advanced electronic driver aids.

Connectivity Features:

No modern connectivity features such as Bluetooth or USB ports. Analog gauges and controls.

🔧 Maintenance

Engine Oil Change Interval:

Every 3,000-5,000 miles or 6 months, whichever comes first (depending on driving conditions and oil type used, consult manual for specifics).

Transmission Fluid Change Interval:

Every 30,000-60,000 miles, or as recommended based on towing and driving conditions.

Spark Plug Replacement Interval:

Approximately 30,000-60,000 miles, depending on spark plug type (e.g., copper vs. platinum).

Transfer Case Fluid Change:

Check and change at recommended intervals (e.g., every 30,000-60,000 miles or as per severe service schedule).

Engine Oil Specification:

API Service SG or SH, SAE 10W-30 or 5W-30 (depending on climate, check owner's manual)

Coolant Specification:

Ethylene glycol-based coolant, typically a 50/50 mix with distilled water. Use a mixture meeting GM specification (e.g., Type A or Type B).

Brake Fluid Specification:

DOT 3 brake fluid

Power Steering Fluid Specification:

Dexron-III ATF or GM specified power steering fluid

Differential Fluid Specification:

Hypoid gear oil (e.g., SAE 80W-90, GL-5 rated for most applications; consult manual for specific types and LSD additives if applicable).

Known Issues:

Common issues may include intake manifold gasket leaks, worn U-joints, radiator leaks, power steering pump wear, and electrical connector corrosion. The TBI system can sometimes be prone to issues if not properly maintained.

📚 Vehicle History

Brand Heritage:

GMC has a long history of producing robust and capable trucks, emphasizing heavy-duty applications and professional use.

Model Evolution:

The 1993 K2500 is part of the second generation of the GMT400 platform, introduced in late 1987 for the 1988 model year. This generation marked a significant redesign with more aerodynamic styling and improved comfort and capability.

Production Years For Generation:

1988-1998