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            Manual Coverage
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            Systems Covered
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            Powertrain Control:
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            Engine Control Module (ECM) diagnostics, fuel injection, ignition system wiring, emissions controls wiring
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            Transmission Control:
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            Transmission Control Module (TCM) wiring, shift control systems
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            Chassis Systems:
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            Anti-lock Braking System (ABS) wiring, StabiliTrak (ESC) wiring, Power Steering wiring, Suspension control systems
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            Body Electrical:
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            Lighting (headlights, taillights, interior), Power Windows, Power Locks, Wipers, Horn, Door Modules, Seat Modules
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            Comfort Convenience:
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            HVAC controls wiring, Audio system wiring, Remote Keyless Entry (RKE) wiring, Security system wiring, Sunroof operation wiring
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            Infotainment Connectivity:
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            Radio, Navigation, Bluetooth, USB, OnStar system wiring
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            Instrumentation Gauges:
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            Instrument Cluster wiring, warning lights, gauge operation
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            Safety Restraints:
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            Airbag system wiring (SRS), Occupant classification system wiring
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            Engine Cooling Management:
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            Cooling fan control wiring, temperature sensor wiring
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            Charging Starting System:
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            Alternator wiring, Starter motor wiring, Battery management
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            Lighting Control:
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            Headlamps, taillamps, brake lights, turn signals, interior lighting, fog lamps, cargo lamps.
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            Wiper Washer System:
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            Front and rear wiper motors, washer pump, control modules.
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            Horn System:
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            Horn operation and wiring.
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            Trailer Towing Wiring:
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            Wiring harnesses for trailer lights and electric trailer brakes.
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            Procedures Included
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            Troubleshooting Methodology:
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            Step-by-step diagnostic procedures for electrical faults, using DTCs, signal tracing
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            Wiring Diagram Interpretation:
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            Detailed explanation of how to read and understand wiring diagrams, component identification
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            Component Testing:
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            Procedures for testing sensors, actuators, modules, and other electrical components
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            Fuse Relay Identification:
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            Clear identification of fuse box locations, fuse ratings, and relay functions
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            Ground Point Location:
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            Identification of all chassis and module ground points
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            Connector Pinout Diagrams:
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            Detailed pinout diagrams for major electrical connectors
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            Diagnostic Tool Usage:
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            Guidance on using scan tools for diagnosing electrical issues (OBD-II)
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            Component Replacement:
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            Electrical component replacement procedures where relevant to diagnostics
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            Fuse Relay Replacement:
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            Detailed instructions for identifying and replacing fuses and relays for all vehicle systems.
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            Technical Depth
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            Depth:
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            Comprehensive diagnostic and repair information for all electrical systems.
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            Target Audience:
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            Professional technicians and advanced DIY enthusiasts.
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            Diagnostic Charts:
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            Inclusion of diagnostic charts correlating symptoms with potential causes and tests.
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            Maintenance
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            Service Intervals
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            Oil Change Interval:
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            Typically 7,500 miles or 6 months, with oil life monitoring system. Consult specific vehicle maintenance guide for exact intervals.
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            Transmission Fluid Change:
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            Refer to owner's manual. Often around 100,000 miles under normal driving conditions, sooner for severe use. Use specific DEXRON-VI fluid.
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            Coolant Change:
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            Dex-Cool antifreeze. Initial change at 5 years/100,000 miles, then every 5 years/100,000 miles thereafter.
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            Fluid Specifications
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            Engine Oil:
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            SAE 5W-30. API SN certified. Capacity varies by engine (e.g., 5.3L ~6 quarts).
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            Transmission Fluid:
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            Dexron VI Automatic Transmission Fluid. Capacity approx. 8-10 quarts for dry fill depending on transmission.
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            Brake Fluid:
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            DOT 3 or DOT 4 (consult owner's manual for precise specification).
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            Coolant:
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            GM 'Dex-Cool' (Orange) Long-Life Antifreeze/Coolant. 50/50 mix with distilled water.
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            Known Issues
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            Common Electrical Issues:
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            Problems with infotainment screens, power window/lock actuators, HVAC blower motor resistors, ABS wheel speed sensors, potential for CAN bus communication errors. This manual is essential for diagnosing these.
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            Common Powertrain Issues:
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            Active Fuel Management (AFM) system lifter issues, piston ring wear (on some engine variants), catalytic converter failures. Electrical systems often play a role in AFM operation.
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            Filter Part Numbers
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            Oil Filter:
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            ACDelco PF46 or equivalent (e.g., Fram PH10159, WIX 57060). Check for specific engine.
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