Engine Mechanical:
Yes (including assembly, disassembly, inspection, repair)
Engine Electrical:
Yes (ignition, fuel injection, sensors, actuators, ECU diagnostics)
Transmission Automatic:
Yes (42RE, 45RFE, 545RFE - overhaul, diagnosis, control systems)
Transmission Manual:
N/A (primarily for automatic transmissions)
Drivetrain 4X4:
Yes (NV242 transfer case, Dana 30 front axle, Chrysler 8.25 rear axle)
Suspension:
Yes (front solid axle, rear solid axle, springs, shocks, steering components)
Brakes:
Yes (ABS, hydraulic system, rotors, pads, calipers, parking brake)
Steering:
Yes (power steering system, steering column, linkage)
Cooling System:
Yes (radiator, fan, water pump, thermostat, hoses)
Fuel System:
Yes (fuel pump, injectors, lines, pressure regulator, EVAP)
Exhaust System:
Yes (catalytic converter, mufflers, pipes, oxygen sensors)
Electrical Body:
Yes (lighting, power windows, locks, mirrors, wipers, horn)
HVAC:
Yes (heating, ventilation, air conditioning system diagnosis and repair)
Body And Frame:
Yes (body panel repair, rust prevention, glass replacement)
Chassis Electrical:
Yes (instrument cluster, dashboard, warning lights)
Safety Systems:
Yes (airbag system, seatbelts, SRS diagnostics)
Diagnostic Troubleshooting:
Yes (DTC codes, guided diagnostics, component testing)
Routine Maintenance:
Yes (oil changes, fluid flushes, filter replacements)
Engine Repair:
Yes (head gaskets, timing components, piston/ring replacement, bearing services)
Transmission Overhaul:
Yes (complete rebuild procedures for automatic transmissions)
Brake System Repair:
Yes (caliper replacement, master cylinder, bleeding procedure)
Suspension Component Replacement:
Yes (ball joints, tie rod ends, control arms, shock absorbers)
Electrical Component Testing:
Yes (using multimeter, diagnostic tools)
HVAC System Repair:
Yes (compressor replacement, refrigerant service, blower motor)
Body Panel Replacement:
Yes (fenders, doors, bumpers)
Diagnostic Procedures:
Yes (step-by-step troubleshooting for various symptoms)
Torque Specifications:
Yes (critical for engine, chassis, and driveline assembly)
Wiring Diagrams:
Yes (for electrical system troubleshooting)
Depth:
Comprehensive (from basic maintenance to full engine/transmission rebuilds)
Diagnostic Focus:
Advanced (includes specific diagnostic trouble codes and troubleshooting trees)
Oil Change Interval:
Every 3,000 - 5,000 miles or 6 months (depending on driving conditions and oil type)
Transmission Fluid Change Interval:
Every 30,000 - 60,000 miles (refer to manual for specifics based on usage)
Coolant Flush Interval:
Every 30,000 - 100,000 miles (depending on coolant type, typically 50,000 miles for conventional)
Engine Oil Spec 4.0L:
SAE 10W-30 (API certified, meeting Chrysler MS-6381-F)
Engine Oil Spec 4.7L:
SAE 5W-30 (API certified, meeting Chrysler MS-6381-F)
Coolant Spec:
Mopar Antifreeze/Coolant (HOAT - Hybrid Organic Acid Technology), 50/50 mix with distilled water
Power Steering Fluid Spec:
ATF+4 (Mopar)
Common Issues 4.0L:
Head gasket leaks (especially around #3 cylinder), valve cover gasket leaks, oil filter housing leaks, rear main seal leaks.
Common Issues 4.7L:
Crankshaft position sensor failure, camshaft position sensor failure, oil sludge buildup (if maintenance is neglected), intake manifold gasket leaks.
Common Issues Transmission:
Failure of the governor pressure solenoid (42RE), torque converter issues, transmission cooler leaks.
Common Issues Suspension:
Worn control arm bushings, ball joints, and tie rod ends due to vehicle weight and off-road use.
Common Issues Electrical:
Blend door actuator failure in HVAC, instrument cluster issues, window regulator failures.