Manual Coverage
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Systems Covered
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Engine Mechanical:
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Complete overhaul and repair for all 2005 Silverado engines: 4.3L V6 Vortec (RPO L35), 4.8L V8 Vortec (RPO LR4), 5.3L V8 Vortec (RPO LM7, L59 - E85 compatible), 6.0L V8 Vortec (RPO LQ4, LQ9 - HO version).
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Engine Electrical:
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Ignition system, fuel injection system (MPI), emission control systems (EVAP, EGR), starter motor, alternator, battery, charging system, sensor diagnostics (MAF, MAP, O2, Knock, Crankshaft Position, Camshaft Position), PCM/ECM operation and diagnosis.
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Transmission:
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Service and repair for 4-speed automatic transmissions: 4L60E (RPO MY7), 4L70E (RPO MYD), and heavy-duty 4-speed automatic transmissions: 4L80E (RPO MY7/MX3) and 4L85E (RPO MW3). Includes torque converter, valve body, internal components, and electronic controls.
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Drivetrain:
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Front and rear axle service, differential repair, transfer case (NVG236, NVG246, NP8) overhaul and operation, driveshafts, U-joints, CV joints, wheel bearing and hub replacement.
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Suspension:
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Front independent suspension (torsion bar or coil spring on HD models), rear leaf spring suspension, shock absorbers, ball joints, control arms, sway bars, bushings, steering knuckles, alignment specifications.
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Steering:
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Power steering system diagnosis and repair, steering column, steering gear box, tie rods, power steering pump and fluid.
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Brakes:
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Front disc brakes (vented and solid rotor options), rear drum brakes (standard on 1500, disc on HD), ABS (Anti-lock Braking System) diagnosis and repair, brake fluid specifications, hydraulic lines, master cylinder, brake boosters, parking brake system.
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Electrical Body:
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Body control module (BCM), lighting systems (headlights, taillights, interior), power windows, power door locks, mirrors, wipers, horn, horn, accessory power circuits, trailer wiring harness.
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HVAC:
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Heating, ventilation, and air conditioning (HVAC) system diagnosis, refrigerant handling, blower motor, evaporator core, condenser, compressor, control panels, ducting.
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Safety Restraint:
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Airbag system diagnosis and repair, seat belt mechanisms, SRS module.
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Procedures Included
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Maintenance:
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Scheduled maintenance intervals, oil changes, filter replacements (oil, air, fuel), spark plug replacement, coolant flush, transmission fluid change, brake fluid change, differential fluid change, lubrication points.
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Troubleshooting:
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Diagnostic trouble codes (DTCs) interpretation and resolution, symptom-based troubleshooting guides for common drivability issues, electrical gremlins, and mechanical faults.
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Repair:
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Step-by-step instructions for component removal, installation, and overhaul for all major vehicle systems, including engine rebuilds, transmission overhauls, brake caliper replacement, and suspension component replacement.
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Diagnostics:
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Detailed diagnostic procedures utilizing scan tools (e.g., OBD-II), wiring diagrams, component testing, and circuit analysis to pinpoint issues.
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Technical Specifications:
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Torque specifications for all fasteners, engine component clearances, fluid capacities, wiring diagrams, fuse box layouts, diagnostic connector pinouts.
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Technical Depth
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Depth:
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Comprehensive from basic maintenance to full engine and transmission rebuilds, including advanced electrical diagnostics and component-level repair.
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Maintenance
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Service Intervals
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Oil Change Interval:
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Every 3,000-7,500 miles or 3-6 months, depending on driving conditions and oil type (consult manual for specific recommendations).
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Transmission Fluid Change:
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Typically every 30,000-100,000 miles or 2-5 years for automatic transmissions, especially if used for towing. Consult manual for exact interval.
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Spark Plugs:
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Replace every 60,000-100,000 miles depending on plug type (e.g., platinum or iridium).
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Fluid Specifications
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Engine Oil:
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SAE 5W-30 viscosity grade is common for most 2005 Silverado engines. Refer to API service classification and manual for specific requirements (e.g., GM dexos is not applicable for this year).
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Transmission Fluid:
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Dexron-III H or Dexron-VI automatic transmission fluid (ATF) for 4L60E/4L70E/4L80E/4L85E transmissions. Always verify with manual.
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Coolant:
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GM-spec engine coolant (typically a 50/50 mixture of ethylene glycol antifreeze and distilled water). Check color and specification (e.g., orange or green depending on original fill).
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Brake Fluid:
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DOT 3 brake fluid.
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Known Issues
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Head Gaskets:
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Some Vortec engines, particularly the 5.3L, can be prone to head gasket leaks over time, especially if overheated.
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Transmission Problems:
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The 4L60E transmission can experience issues like torque converter clutch (TCC) shudder or solenoid failures. Heavy-duty transmissions are generally more robust.
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Electrical Issues:
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Common electrical gremlins can include malfunctioning power windows, faulty door lock actuators, and issues with body control modules (BCMs).
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Exhaust Manifold Leaks:
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Exhaust manifold gaskets can sometimes fail, leading to ticking noises on startup.
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