Introduction
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Market Position
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Segment:
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Full-size luxury sedan
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Target Audience:
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Owners seeking to perform their own maintenance and repairs, DIY enthusiasts, independent repair shops.
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Competitive Analysis
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Competitors 2005:
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Lincoln Town Car, Cadillac DTS, Chrysler 300, Toyota Avalon.
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Key Features
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Vehicle Highlights:
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Spacious interior, comfortable ride, quiet cabin, upscale features, smooth V6 and V8 engine options.
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Manual Value
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Cost Savings:
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Significant savings on labor costs compared to dealership or independent mechanic repairs.
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Ease Of Use:
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User-friendly, step-by-step instructions with accompanying diagrams and illustrations.
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Manual Coverage
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Systems Covered
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Engine:
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Complete diagnosis, repair, and overhaul procedures for all applicable engine variants.
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Transmission:
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Detailed service, repair, and diagnosis for automatic transmission systems.
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Brakes:
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Antilock Braking System (ABS), traction control, hydraulic and mechanical components.
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Electrical:
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Wiring diagrams, component testing, diagnosis of Body Control Module (BCM), Powertrain Control Module (PCM), and other electronic modules.
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Suspension:
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Front and rear suspension systems, including struts, springs, control arms, and bushings.
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Steering:
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Power steering system, steering column, and linkage components.
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HVAC:
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Heating, ventilation, and air conditioning system diagnosis and repair.
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Body:
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Body panel repair, door mechanisms, glass, seals, and trim.
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Interior:
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Seats, upholstery, dashboard, and interior trim removal and installation.
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Chassis:
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Frame, subframes, and associated components.
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Fuel System:
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Fuel tank, pump, lines, injectors, and evaporative emission control (EVAP).
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Cooling System:
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Radiator, water pump, thermostat, coolant passages, and fan operation.
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Exhaust System:
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Exhaust manifold, catalytic converter, mufflers, and pipes.
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Wheels And Tires:
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Tire pressure monitoring system (TPMS), wheel mounting, and alignment specifications.
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Procedures Included
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Preventative Maintenance:
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Oil changes, filter replacements, fluid checks, tune-ups, spark plug replacement.
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Troubleshooting:
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Diagnostic charts, symptom-based troubleshooting for various systems.
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Repair:
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Step-by-step repair instructions for virtually all mechanical and electrical components.
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Rebuild:
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Engine and transmission rebuild procedures with torque specifications and clearances.
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Diagnostics:
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On-Board Diagnostics (OBD-II) system interpretation, diagnostic trouble code (DTC) lookup, and specific diagnostic procedures.
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Replacement:
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Component replacement instructions for all major parts.
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Adjustment:
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Alignment, headlight aim, and other necessary adjustments.
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Wiring Diagrams:
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Comprehensive, system-specific electrical wiring schematics.
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Technical Depth
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Depth:
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Comprehensive, from basic maintenance to complete engine and transmission overhauls and advanced electrical diagnostics.
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Maintenance
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Service Intervals
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Oil Change Interval:
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Every 7,500 miles or 12 months (using synthetic oil), or as indicated by the oil life monitoring system.
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Air Filter Replacement:
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Every 30,000-45,000 miles or as needed based on inspection.
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Spark Plug Replacement V6:
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Approx. 100,000 miles (Platinum or Iridium plugs)
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Spark Plug Replacement V8:
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Approx. 100,000 miles (Platinum or Iridium plugs)
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Fluid Specifications
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Engine Oil Type:
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SAE 5W-30 Synthetic (API Certified)
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Engine Oil Capacity V6:
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4.5 US quarts (with filter)
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Engine Oil Capacity V8:
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5.0 US quarts (with filter)
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Coolant Type:
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GM P/N 12346790 (Dex-Cool Extended Life)
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Transmission Fluid Type:
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Dexron VI Automatic Transmission Fluid
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Known Issues
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Engine Oil Leaks:
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Common for valve cover gaskets and rear main seals to leak on older Northstar V8 engines.
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Intake Manifold Gasket:
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On some earlier GM V6 engines (not necessarily the L32), intake manifold gaskets could fail and cause coolant leaks.
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Suspension Components:
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Wear and tear on control arm bushings and sway bar links can lead to clunking noises.
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Window Regulators:
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Power window regulators can fail over time.
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Idler Arm Bushings:
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Wear on idler arm bushings can lead to steering looseness.
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Fuel Pump Module:
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Infrequent failures of the fuel pump module can occur.
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