Engine Mechanical:
        
        
            Engine assembly, disassembly, inspection, repair, and rebuilding (including cylinder heads, blocks, pistons, crankshaft, camshafts)
        
     
    
        
            Engine Control System:
        
        
            Powertrain Control Module (PCM) diagnosis, fuel injection, ignition system, sensors, actuators, emissions control
        
     
    
        
            Fuel System:
        
        
            Fuel pump, fuel filter, fuel injectors, fuel pressure, evaporative emission control (EVAP)
        
     
    
        
            Emission Control:
        
        
            Catalytic converter, oxygen sensors, EGR system, PCV system, emissions testing procedures
        
     
    
        
            Cooling System:
        
        
            Radiator, water pump, thermostat, cooling fan, hoses, coolant specifications
        
     
    
        
            Lubrication System:
        
        
            Oil pump, oil filter, oil pan, oil specifications, lubrication passages
        
     
    
        
            Ignition Starting Charging:
        
        
            Spark plugs, ignition coils, starter motor, alternator, battery, wiring
        
     
    
        
            Automatic Transmission:
        
        
            4L60-E and 4L80-E: Overhaul, diagnosis, fluid service, torque converter, valve body
        
     
    
        
            Manual Transmission:
        
        
            Not Applicable for most Avalanche models, but coverage for any available manual transmission options is included.
        
     
    
        
            Transfer Case:
        
        
            NVG 246 (Autotrac II): Operation, maintenance, and repair
        
     
    
        
            Drive Shaft Differential:
        
        
            Front and rear driveshafts, U-joints, rear axle assembly, differential service, axle ratios
        
     
    
        
            Suspension System:
        
        
            Front independent suspension (torsion bar), rear multi-leaf spring suspension, shock absorbers, ball joints, control arms
        
     
    
        
            Tire And Wheel:
        
        
            Tire pressure, wheel alignment, wheel specifications, tire rotation
        
     
    
        
            Brake System:
        
        
            Front disc brakes, rear disc brakes, ABS system, brake fluid, brake pads, rotors, calipers, lines
        
     
    
        
            Parking Brake:
        
        
            Parking brake mechanism, adjustment, and repair
        
     
    
        
            Steering System:
        
        
            Power steering system, steering column, steering gear, tie rods, steering linkage
        
     
    
        
            Climate Control:
        
        
            Air conditioning system, heating system, HVAC components, refrigerant, blower motor
        
     
    
        
            Supplemental Restraint System:
        
        
            Airbag system, seat belt pre-tensioners, SRS control module, diagnosis and replacement procedures
        
     
    
        
            Seat Belts:
        
        
            Seat belt operation, maintenance, and replacement
        
     
    
        
            Engine Immobilizer:
        
        
            Anti-theft system, key programming, immobilizer module
        
     
    
        
            Cruise Control:
        
        
            Cruise control system operation, diagnosis, and repair
        
     
    
        
            Wiper Washer System:
        
        
            Wiper motor, wiper blades, washer pump, washer fluid reservoir
        
     
    
        
            Door Lock System:
        
        
            Power door locks, central locking, keyless entry system
        
     
    
        
            Meter Audio Visual:
        
        
            Instrument cluster, gauges, audio system, speakers, entertainment systems
        
     
    
        
            Horn:
        
        
            Horn operation and circuit diagnosis
        
     
    
        
            Windshield Glass Mirror:
        
        
            Windshield replacement, glass repair, mirror adjustment and replacement
        
     
    
        
            Instrument Panel:
        
        
            Instrument panel removal and installation, gauge clusters, warning lights
        
     
    
        
            Seats:
        
        
            Seat adjustment, seat track repair, seat heater (if equipped)
        
     
    
        
            Engine Hood Door:
        
        
            Hood latch and release, door hinges, door mechanisms, body panel adjustment
        
     
    
        
            Exterior Interior Trim:
        
        
            Body panels, bumpers, trim pieces, interior upholstery, dashboard components
        
     
    
        
            Electrical System:
        
        
            12-volt system, battery, charging system, starting system, fuses, relays, wiring harnesses
        
     
    
        
            Multiplex Can Communication:
        
        
            Controller Area Network (CAN) bus system, multiplexing, diagnostic trouble codes (DTCs)
        
     
    
    
        
            Maintenance Procedures:
        
        
            Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, tune-ups, brake service, tire rotation
        
     
    
        
            Diagnosis Troubleshooting:
        
        
            Step-by-step diagnostic procedures, symptom-based troubleshooting charts, diagnostic trouble code (DTC) interpretation and resolution
        
     
    
        
            Repair Replacement:
        
        
            Detailed instructions for the removal, repair, and installation of all vehicle components and systems
        
     
    
        
            Rebuilding Overhaul:
        
        
            Complete procedures for rebuilding engines, transmissions, and other major components
        
     
    
        
            Technical Specifications:
        
        
            All necessary torque values, clearances, fluid capacities, electrical specifications, and alignment data
        
     
    
        
            Wiring Schematics:
        
        
            Complete and detailed electrical wiring diagrams for all vehicle systems
        
     
    
        
            Illustrations Diagrams:
        
        
            Numerous high-quality illustrations, diagrams, and exploded views to clarify procedures
        
     
    
    
        
            Depth:
        
        
            Factory-level, including advanced diagnostics, component-level repair, and full vehicle disassembly/reassembly
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Every 3,000-7,500 miles or 6-12 months, depending on driving conditions and oil type used. Consult manual for specific recommendations based on oil quality and usage.
        
     
    
        
            Transmission Fluid Change:
        
        
            Every 30,000-100,000 miles, depending on towing usage and fluid type. Recommended to check fluid condition regularly.
        
     
    
        
            Coolant Flush:
        
        
            Every 30,000-50,000 miles or 2-5 years.
        
     
    
        
            Spark Plug Replacement:
        
        
            100,000 miles (with platinum-tipped spark plugs).
        
     
    
    
        
            Engine Oil:
        
        
            SAE 5W-30, API SM or higher (check manual for specific Dexos compliance if applicable for later GM standards)
        
     
    
        
            Engine Coolant:
        
        
            Dex-Cool (GM Orange Coolant), 50/50 mixture with distilled water
        
     
    
        
            Automatic Transmission Fluid:
        
        
            Dexron III (or equivalent approved fluid like Dexron VI for updated specs)
        
     
    
        
            Power Steering Fluid:
        
        
            Dexron III/VI
        
     
    
    
    
        
            Common Issue 1:
        
        
            Rear main seal leaks: A potential issue on higher-mileage Vortec V8 engines.
        
     
    
        
            Common Issue 2:
        
        
            Transmission cooler line leaks: Can lead to transmission fluid loss and potential overheating.
        
     
    
        
            Common Issue 3:
        
        
            Water pump bearing failure: Symptoms include coolant leaks and whining noises.
        
     
    
        
            Common Issue 4:
        
        
            ABS sensor failures: Can lead to ABS warning lights and loss of ABS functionality.
        
     
    
        
            Common Issue 5:
        
        
            Power steering pump issues: Leaks or noise can indicate a failing pump.