Engine Mechanical:
Detailed disassembly, inspection, assembly, and repair procedures for all engine components.
Engine Performance:
Diagnosis and repair of performance-related issues, tuning information.
Fuel System:
Fuel delivery, injection system diagnosis and repair, fuel pump, injectors, pressure regulation.
Cooling System:
Radiator, water pump, thermostat, hoses, fan assembly, coolant specifications and procedures.
Ignition System:
Spark plugs, coils, ignition timing, diagnostic procedures.
Exhaust System:
Catalytic converter, mufflers, exhaust pipes, oxygen sensors, emissions control.
Transmission Automatic:
Disassembly, assembly, diagnosis, repair, and fluid specifications for the 4-speed automatic transmission.
Transmission Manual:
Diagnosis and repair procedures for available manual transmissions (if applicable).
Drivetrain 4Wd:
Quadra-Trac II and Selec-Trac NV247/NV242 transfer case operation, diagnosis, and repair.
Axles Differentials:
Front and rear axle assemblies, differential service, bearing adjustment, fluid specifications.
Brakes System:
Hydraulic system, ABS diagnosis and repair, brake pads, rotors, calipers, fluid specifications.
Suspension System:
Front and rear suspension components, control arms, springs, shock absorbers, alignment specifications.
Steering System:
Power steering pump, rack and pinion, tie rods, steering column, diagnosis and repair.
Wheels Tires:
Tire pressure recommendations, wheel specifications, bolt patterns.
Electrical System Overview:
Charging system, starting system, battery, wiring diagrams.
Lighting System:
Headlights, taillights, interior lighting, bulb types and replacement.
Instrument Panel:
Gauges, warning lights, cluster diagnosis and repair.
Comfort Convenience:
Power windows, locks, mirrors, seats, sunroof, keyless entry, remote start.
HVAC System:
Air conditioning, heating, ventilation, climate control diagnosis and repair, refrigerant information.
Audio Infotainment:
Radio, CD player, speaker systems, antenna, wiring.
Safety Restraints:
Airbag system diagnosis and repair, seat belts, SRS module.
Body Exterior:
Body panel removal and installation, doors, hood, tailgate, bumpers, trim.
Body Interior:
Dashboard, door panels, headliner, carpeting, seat removal and installation.
Glass Windshield:
Windshield, side glass, rear glass replacement procedures.
Chassis Frame:
Frame inspection and repair procedures (if applicable).
Diagnostic Trouble Codes:
Identification of DTCs, diagnostic flowcharts, and repair procedures based on codes.
Scheduled Maintenance:
Detailed maintenance schedules, fluid changes, filter replacements, inspections.
Routine Inspections:
Visual checks, fluid level checks, brake inspections, tire inspections.
Component Replacement:
Step-by-step instructions for replacing virtually all serviceable components.
Troubleshooting Guides:
Systematic approaches to diagnosing and resolving common and uncommon problems.
Torque Specifications:
Precise torque values for all critical fasteners.
Wiring Diagrams:
Comprehensive electrical schematics for all vehicle systems.
Special Tools:
Identification and usage of specialized tools required for certain repairs.
Depth Level:
Factory-level repair and diagnostic information suitable for professional technicians and experienced DIYers.
Diagnostic Capability:
Advanced diagnostic procedures, including interpretation of sensor data and troubleshooting complex electrical and mechanical faults.
Rebuild Procedures:
Detailed instructions for rebuilding major components such as engines, transmissions, and differentials.
Oil Change Interval:
Typically every 3,000-7,500 miles or 6 months, depending on driving conditions and oil type used.
Air Filter Replacement:
Every 15,000-30,000 miles or as needed based on inspection.
Spark Plug Replacement:
Approx. 100,000 miles for platinum/iridium plugs (specific type depends on engine).
Transmission Fluid Change:
Every 30,000-60,000 miles for automatic transmissions, depending on usage.
Engine Oil Type 4.7L:
SAE 5W-30 (Synthetic blend or full synthetic recommended)
Engine Oil Capacity 4.7L:
Approx. 7 quarts (with filter)
Engine Oil Type 4.0L:
SAE 10W-30 (Synthetic blend or full synthetic recommended)
Engine Oil Capacity 4.0L:
Approx. 6 quarts (with filter)
Coolant Type:
Mopar OAT (Organic Additive Technology) or equivalent HOAT (Hybrid OAT) antifreeze, typically orange or pink.
Engine Sludge:
The 4.7L V8 (PowerTech) engine can be prone to sludge buildup if oil changes are neglected. Regular maintenance is critical.
Cooling System Leaks:
Water pump leaks and radiator issues can occur. Overheating due to improper coolant maintenance is a concern.
Interior Trim Wear:
Some interior plastics and trim pieces can show wear and fade over time.
Transfer Case Issues:
The NV247 transfer case (Quadra-Trac II) can develop issues with its clutch packs or electronic sensors.
Power Window Regulators:
Can be prone to failure, especially on older vehicles.
ABS Sensor Failures:
ABS wheel speed sensors can fail, triggering ABS warning lights.