Target Audience:
DIY mechanics, fleet maintenance, professional repair shops seeking factory data
Advantage Over Print:
Instant access, searchability, ease of navigation, multimedia potential (though not explicitly stated, common in modern digital manuals)
Data Source:
Licensed from OE (Original Equipment) materials by RepairSurge
Convenience:
Accessible anytime, anywhere with internet connectivity
Cost Effectiveness:
Significant savings compared to traditional printed manuals or dealership labor
Primary Coverage:
1990 GMC K3500
Secondary Coverage:
General GMC C/K series trucks of the era with similar components
Estimated Pages:
Extensive (typical for OE service manuals, often 1500+ pages when combined)
Type:
Official Service and Repair Manual (Software)
Format:
Online/Digital Access (via web browser)
Access Duration:
1 Year (with discounts for renewal)
Engine Mechanical:
Complete overhaul, component diagnosis, timing, lubrication, cooling
Engine Performance:
Fuel delivery, ignition system, emissions controls, diagnostics
Transmission Drivetrain:
Manual and automatic transmission repair, transfer case, axles, driveshafts, differentials
Suspension Steering:
Front and rear suspension components, steering gear, power steering system, alignment specifications
Brakes:
Front and rear brake systems (disc/drum), ABS (if equipped), hydraulic system, parking brake
Electrical System:
Battery, charging system, starting system, lighting, instrumentation, power accessories, wiring diagrams
HVAC:
Heating, ventilation, and air conditioning system diagnosis and repair
Body Chassis:
Body panels, doors, glass, interior trim, chassis components, corrosion protection
Diagnostic Troubleshooting:
Systematic diagnostic procedures, fault code interpretation (OBD-I)
Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, lubrication, inspections
Repair:
Component removal, installation, and overhaul for all major systems
Troubleshooting:
Step-by-step guides for diagnosing common and uncommon problems
Specifications:
Torque values, clearances, fluid capacities, pressures, electrical specifications
Wiring Diagrams:
Detailed electrical schematics for all vehicle systems
Depth:
Factory-level detail, suitable for professional technicians and advanced DIYers
Engine Options:
4.3L V6 (VIN Z), 5.7L V8 (VIN R), 7.4L V8 (VIN N)
4.3L V6 Hp:
Approx. 160-200 hp (depending on specific configuration)
5.7L V8 Hp:
Approx. 200-230 hp (depending on specific configuration)
7.4L V8 Hp:
Approx. 230-255 hp (depending on specific configuration)
Fuel Injection:
Throttle Body Injection (TBI) or Multi-Port Fuel Injection (MPFI) depending on engine and emissions calibration
Fuel Type:
Unleaded Gasoline
Availability:
Likely available for some configurations, though less common in K3500 heavy-duty models
Automatic Options:
TH400 (3L80), 4L60, 4L80E (for heavy-duty applications)
Drivetrain:
4x4 (Four-Wheel Drive) standard on K-series trucks
Body Styles:
Regular Cab, Extended Cab (with various bed lengths: 6.5 ft, 8 ft)
Gvwr:
Varies significantly by configuration, but typically 8,600 lbs to over 10,000 lbs for K3500 models
Oil Change Interval:
Typically every 3,000-5,000 miles or 3-6 months, depending on driving conditions and oil type used. Refer to specific manual recommendations.
Transmission Fluid Interval:
Check every 15,000 miles, change/flush every 30,000-60,000 miles depending on usage and fluid type. Refer to specific manual.
Coolant Interval:
Typically every 30,000-50,000 miles for traditional coolant. Extended life coolants may have longer intervals. Refer to specific manual.
Engine Oil Viscosity:
Commonly 5W-30 or 10W-30 for gasoline engines (refer to manual for exact specification and temperature range)
Transmission Fluid Type:
Dexron-III (or equivalent) for automatic transmissions; Manual transmission fluid (MTF) specific to manual gearbox.
Coolant Type:
Green ethylene glycol-based coolant (traditional) or specific extended-life coolant (ELC) if upgraded. Refer to manual for correct type and mixture.
Tbi Performance:
Throttle Body Injection (TBI) systems can be prone to clogging or wear, affecting idle and acceleration.
Fuel Pump Reliability:
In-tank fuel pumps can degrade over time, leading to hard starting or intermittent fuel delivery.
Electrical Connectors:
Corrosion or looseness in electrical connectors can cause intermittent failures in various systems.
Exhaust Manifold Cracks:
Some V8 engines of this era could experience cracked exhaust manifolds, leading to exhaust leaks and ticking noises.
Gm Truck Legacy:
GMC has a long history of producing robust and capable trucks for commercial and personal use.
Gmt400 Introduction:
The GMT400 platform, introduced in 1988 for C/K trucks, represented a significant redesign with improved aerodynamics, comfort, and safety.
Manufacturing Locations:
Various General Motors assembly plants in North America
