Manual Coverage
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Systems Covered
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Systems Covered Engine:
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Engine mechanical, lubrication, cooling, fuel delivery, ignition, exhaust, emissions control
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Systems Covered Transmission:
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Automatic Transmission (e.g., 4L60E, 4L80E) and Manual Transmission (e.g., NV3500, NV4500) service and repair
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Systems Covered Drivetrain:
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Driveshafts, U-joints, axles, rear axle assembly (e.g., G80 locking differential)
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Systems Covered Suspension Steering:
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Front suspension (independent), rear suspension (leaf springs), steering gear, power steering system
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Systems Covered Brakes:
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Front disc brakes, rear drum brakes, anti-lock braking system (ABS), parking brake
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Systems Covered Electrical:
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Battery, charging system, starting system, lighting, instrument cluster, power accessories, body electrical, wiring diagrams
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Systems Covered HVAC:
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Heating, ventilation, and air conditioning (HVAC) system diagnosis and repair
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Systems Covered Body:
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Body panels, doors, windows, interior trim, bumpers, exterior trim, rust repair
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Systems Covered Comfort Controls:
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Climate controls, interior lighting, power locks, power mirrors, power seats (if equipped)
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Procedures Included
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Procedures Included Maintenance:
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Routine maintenance, fluid changes, filter replacements, tune-ups
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Procedures Included Repair:
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Component removal, installation, overhaul, and replacement for all major systems
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Procedures Included Diagnostics:
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Troubleshooting guides, diagnostic procedures, fault code interpretation (OBD-II)
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Procedures Included Specifications:
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Torque specifications, clearances, alignment data, electrical resistance values
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Procedures Included Electrical Diagnostics:
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Extensive wiring diagrams, component testing procedures, and diagnostic flowcharts for all electrical systems including the Powertrain Control Module (PCM).
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Procedures Included Engine Rebuild:
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Detailed steps for engine disassembly, inspection, component replacement (pistons, rings, bearings, valves), and reassembly with torque specifications.
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Procedures Included Transmission Overhaul:
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Complete guide to diagnosing, disassembling, inspecting, and rebuilding automatic and manual transmissions, including torque converter service and clutch pack replacement.
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Procedures Included Body Repair:
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Guidelines for body panel alignment, welding procedures, rust repair techniques, and interior trim removal/installation.
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Technical Depth
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Technical Depth:
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Comprehensive: Covers everything from basic maintenance to complete engine rebuilds, transmission overhauls, and complex electrical diagnostics.
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Engine Specifications
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Primary Engine
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Primary Engine Option 1:
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4.3L (262 cu in) Vortec V6
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Primary Engine Option 1 Hp:
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Approx. 160 hp @ 4000 rpm
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Primary Engine Option 1 Torque:
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Approx. 235 lb-ft @ 2800 rpm
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Primary Engine Option 2:
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5.0L (305 cu in) Vortec V8
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Primary Engine Option 2 Hp:
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Approx. 200 hp @ 4200 rpm
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Primary Engine Option 2 Torque:
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Approx. 275 lb-ft @ 2400 rpm
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Primary Engine Option 3:
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5.7L (350 cu in) Vortec V8
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Primary Engine Option 3 Hp:
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Approx. 255 hp @ 4600 rpm
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Primary Engine Option 3 Torque:
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Approx. 330 lb-ft @ 2800 rpm
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Fuel System
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Fuel System Type:
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Multi-port Fuel Injection (MPFI)
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Fuel Type:
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Unleaded Gasoline
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Maintenance
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Service Intervals
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Service Intervals Oil Change:
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Every 3,000-5,000 miles or 3-6 months, depending on driving conditions and oil type used. Refer to manual for specific intervals with synthetic oil.
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Service Intervals Tire Rotation:
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Every 5,000-7,500 miles
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Service Intervals Transmission Fluid:
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Inspect every 15,000 miles, change every 30,000-50,000 miles or as specified in the manual.
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Fluid Specifications
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Fluid Specifications Engine Oil:
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API Service SG or SH, viscosity SAE 5W-30 or 10W-30 depending on temperature. Consult manual for exact recommendations.
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Fluid Specifications Coolant:
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GM P/N 10528371 (Dex-Cool Extended Life, Orange) or equivalent green ethylene glycol coolant (50/50 mix).
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Fluid Specifications Transmission Atf:
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Dexron III (DEXRON-III) Automatic Transmission Fluid (ATF)
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Fluid Specifications Brake Fluid:
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DOT 3 Hydraulic Brake Fluid
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Fluid Specifications Power Steering Fluid:
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GM P/N 10529307 or equivalent Dexron III ATF
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Known Issues
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Known Issues Intake Manifold Gaskets:
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Some Vortec V8 engines (especially early GMT400s) can develop leaks from the intake manifold gaskets, leading to vacuum leaks and rough running.
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Known Issues Window Regulators:
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Power window regulators can become weak or fail over time.
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Known Issues ABS Sensors:
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ABS wheel speed sensors can fail, leading to ABS warning lights and system malfunction.
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Known Issues Catalytic Converter:
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Catalytic converters can become clogged or fail, affecting engine performance and emissions.
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