Manual Coverage
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Systems Covered
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Engine:
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Engine mechanical, lubrication, cooling, fuel, ignition, exhaust, emissions control, engine electrical, engine diagnostics, engine performance tuning
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Transmission:
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Automatic transmission (4T45-E/4T65-E), manual transmission (Getrag F23), clutch system, driveline
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Brakes:
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Brake system hydraulics, front disc brakes, rear drum brakes, ABS (Anti-lock Braking System), parking brake
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Steering:
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Power steering system, steering column, steering gear/rack and pinion
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Suspension:
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Front suspension (independent MacPherson strut), rear suspension (torsion beam axle), shocks, struts, springs, bushings
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Electrical:
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Battery, charging system, starting system, lighting system, instrument panel, gauges, warning indicators, power accessories, body control module (BCM), comfort and convenience systems
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HVAC:
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Heating, Ventilation, and Air Conditioning (HVAC) system, refrigerant, controls, blower motor, evaporator, condenser
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Body:
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Body structure, exterior panels, interior trim, doors, windows, locks, mirrors, roof panel, bumpers, seals
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Chassis:
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Frame, subframes, wheels, tires, alignment
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Restraint Systems:
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Airbags, seat belts, SRS (Supplemental Restraint System) components
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Diagnostics:
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On-Board Diagnostics (OBD-II), diagnostic trouble codes (DTCs), scan tool procedures, troubleshooting flowcharts
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Procedures Included
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Maintenance:
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Oil changes, filter replacements, fluid checks and top-offs, tire rotations, brake inspections, tune-ups
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Repair:
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Engine overhaul, transmission rebuild, brake caliper replacement, suspension component renewal, electrical component diagnosis and replacement, body panel repair
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Troubleshooting:
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Step-by-step diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides
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Installation:
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Component replacement, accessory installation, aftermarket part integration
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Disassembly Assembly:
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Detailed instructions for removing and reinstalling major and minor components
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Specifications:
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Torque specifications, clearances, fluid capacities, pressure readings, electrical resistance values
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Technical Depth
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Depth:
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Comprehensive from basic maintenance to in-depth diagnostics and major component overhaul
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Maintenance
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Service Intervals
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Oil Change Interval Synthetic:
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7,500 miles or 12 months (using synthetic oil)
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Oil Change Interval Conventional:
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3,000 miles or 3 months (using conventional oil, severe service)
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Air Filter Replacement:
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Every 30,000 miles or as needed based on inspection
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Spark Plug Replacement L61:
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100,000 miles (iridium plugs)
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Spark Plug Replacement Lnf:
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100,000 miles (iridium plugs)
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Fluid Specifications
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Engine Oil Type L61:
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SAE 5W-30 (API Certified)
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Engine Oil Type Lnf:
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SAE 5W-30 (API Certified - Dexos1 or equivalent)
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Coolant Type:
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GM P/N 10-238 (Orange) or equivalent OAT (Organic Acid Technology)
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Transmission Fluid Automatic:
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Dexron VI Automatic Transmission Fluid (ATF)
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Brake Fluid Type:
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DOT 3 or DOT 4
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Known Issues
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Engine Performance Lnf:
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Potential for carbon buildup on intake valves in the turbocharged LNF engine, requiring periodic cleaning.
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Electrical Issues:
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Reports of intermittent electrical gremlins, often related to body control module (BCM) or ground issues. Water intrusion in taillight housings can cause electrical problems.
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Suspension Noise:
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Some owners report premature wear or noise from suspension components like sway bar links or control arm bushings.
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Fuel Pump Reliability:
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Occasional reports of fuel pump failures.
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