Engine Mechanical:
Engine assembly, cylinder head, block, pistons, crankshaft, camshaft, timing, lubrication system, cooling system, intake and exhaust systems.
Engine Performance:
Fuel system (injection, pump, injectors), ignition system (coils, plugs, sensors), emissions control systems, engine diagnostics and troubleshooting.
Transmission Automatic:
42RLE automatic transmission: removal, installation, internal components, hydraulic system, torque converter, shift control.
Transmission Manual:
NV3500 manual transmission: removal, installation, internal components, clutch system, shifter mechanism.
Drivetrain:
Four-wheel drive (4WD) system, transfer case (NV241GHD), front axle, rear axle, drive shafts, CV joints, differential service.
Suspension:
Front suspension (independent short-long arm), rear suspension (solid axle, multi-leaf springs), shocks, struts, bushings, alignment specifications.
Steering:
Power steering system (pump, rack and pinion, steering column), steering linkage, power steering fluid specifications.
Brakes:
Front disc brakes, rear drum brakes, anti-lock braking system (ABS), hydraulic system, brake fluid, parking brake, caliper and rotor service.
Electrical System:
Battery, charging system (alternator), starting system (starter motor), ignition system, lighting system, fuses, relays, wiring diagrams.
Body And Chassis:
Body panels, doors, hood, tailgate, bumpers, interior trim, glass, seals, frame, unibody construction principles.
HVAC:
Heating, ventilation, and air conditioning (HVAC) system, refrigerant, compressor, evaporator, condenser, climate control modules.
Body Controls:
Power windows, power locks, remote keyless entry, interior lighting, power mirrors, wiper system, horn.
Safety Systems:
Airbag system (SRS), seat belts, child seat anchors (LATCH), anti-theft system.
Routine Maintenance:
Oil change, filter replacement, fluid level checks and top-offs, tire rotation, brake inspection, battery maintenance.
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides, diagnostic trouble codes (DTCs).
Engine Repair:
Engine overhaul, head gasket replacement, timing belt/chain service, component replacement (alternator, starter, water pump).
Transmission Repair:
Transmission fluid and filter change, clutch replacement, seal replacement, internal transmission component repair.
Brake Service:
Brake pad and rotor replacement, brake fluid flush, caliper rebuilding, parking brake adjustment.
Electrical Diagnostics:
Wiring harness repair, component testing, charging system diagnosis, starter circuit troubleshooting, use of multimeters.
Suspension And Steering Repair:
Ball joint replacement, control arm bushing replacement, tie rod end replacement, power steering pump replacement, wheel bearing service.
Body Work:
Panel alignment, dent repair, rust repair, trim piece replacement, glass installation, seal replacement.
HVAC Service:
Refrigerant recharge, leak detection, component replacement (compressor, condenser, expansion valve), cabin air filter replacement.
Diagnostic Tools:
Use of OBD-II scanners, specific Jeep diagnostic tools (if applicable), troubleshooting flowcharts.
Torque Specifications:
Detailed torque values for all fasteners across all systems.
Depth:
Comprehensive, from basic maintenance to complete overhaul and rebuilding of major components. Includes detailed diagnostic procedures and wiring diagrams.
Oil Change Interval:
Every 7,500 miles (12,000 km) or 6 months, whichever comes first (using synthetic oil).
Tire Rotation Interval:
Every 7,500 miles (12,000 km) or as part of oil change.
Transmission Fluid Change Interval:
Every 60,000 miles (96,000 km) for automatic and manual transmissions (under normal driving conditions).
Coolant Flush Interval:
Every 100,000 miles (160,000 km) or 5 years.
Engine Coolant:
Mopar OAT (Organic Additive Technology) 5/150 Extended Life Antifreeze/Coolant (orange color) or equivalent.
Brake Fluid:
DOT 3 or DOT 4 compatible fluid.
Power Steering Fluid:
ATF+4 (Mopar) or equivalent.
Common Complaints Engine:
Oil leaks from valve cover gaskets, intake manifold gaskets, and oil pan gaskets. Spark plug blowouts (less common in later models). Overheating issues due to cooling system component failure.
Common Complaints Transmission:
Erratic shifting or slipping in the 42RLE automatic transmission. Clutch wear in manual transmission models.
Common Complaints Suspension Steering:
Premature wear of ball joints, tie rod ends, and control arm bushings. Steering pump whine.
Common Complaints Electrical:
Window regulator failures, ABS sensor failures, TIPM (Totally Integrated Power Module) issues on some later models/related Chrysler platforms.
Common Complaints Body:
Interior trim piece fitment issues, water leaks around door seals and sunroof.