🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

1999

Chassis Code:

WJ

Generation Code:

WJ (Second Generation)

Generation Years:

1999-2004

👋 Introduction

Segment:

Mid-size Luxury SUV

Key Competitors:

Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Nissan Pathfinder, Land Rover Discovery.

Differentiation:

Off-road capability inherited from Jeep heritage, more refined interior and ride compared to some competitors, availability of powerful V8 engine.

Platform:

Introduced on the new WJ platform, which offered a unibody construction and a more independent front suspension design compared to its predecessor (ZJ).

Interior:

Significant upgrade in interior design, materials, and comfort over the previous generation, aiming for a more premium feel.

Powertrains:

Offered with the reliable 4.0L inline-six and a new, more powerful 4.7L PowerTech V8 engine.

📋 Manual Details

Covered Drivetrains:

2WD (4x2), 4WD (4x4)

Covered Engines:

4.0L I6, 4.7L V8

Estimated Page Count:

1500+

Type:

Factory Service Repair Manual

Language:

English

Format:

Digital Download (PDF)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, disassembly, overhaul, cooling system, lubrication system, fuel system, ignition system, emission controls, engine performance diagnostics.

Transmission Drivetrain:

Automatic transmission (42RE, 45RFE/545RFE depending on engine/drivetrain), manual transmission (less common), transfer case (NV231, NV242, NV247 depending on model), drive shafts, differentials (front and rear), axles, CV joints, wheel bearings.

Brakes:

Hydraulic system, ABS, front and rear disc brakes, parking brake, bleeding procedures, component replacement.

Suspension Steering:

Front and rear suspension components (coil springs, control arms, track bars, sway bars), steering gear, power steering system, steering linkage, wheel alignment.

Electrical Electronics:

Battery, charging system (alternator), starting system, lighting system, instrument cluster, body control module (BCM), engine control module (ECM), anti-theft system, power windows, power locks, wipers, horn, audio system, HVAC controls.

HVAC:

Air conditioning system, heater core, blower motor, climate control modules, refrigerant handling, component testing and replacement.

Body Chassis:

Body panels, doors, hood, tailgate, bumpers, interior trim, glass, seals, frame components, rust prevention, corrosion control.

Maintenance:

Scheduled maintenance checks (oil changes, filter replacements, fluid checks, tire rotations), brake inspections, tune-ups, belt and hose replacements.

Troubleshooting:

Systematic diagnostic procedures for common and uncommon faults, diagnostic trouble codes (DTCs), symptom-based troubleshooting guides.

Repair Overhaul:

Detailed instructions for component removal, installation, repair, and rebuilding of major systems (engine, transmission, suspension, brakes, etc.).

Component Replacement:

Step-by-step guides for replacing individual parts like starters, alternators, water pumps, fuel injectors, shock absorbers, brake pads, etc.

Diagnostic Tools:

Information on using OBD-II scanners, multimeters, pressure gauges, and other specialized tools for diagnosis.

Depth:

Comprehensive. Covers basic maintenance to complete engine and transmission rebuilds. Includes wiring diagrams and diagnostic procedures.

📊 Manual Specifications

File Type:

PDF

Searchability:

Searchable text

Printability:

Printable

Image Clarity:

High-resolution illustrations and diagrams

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 1 Displacement:

4.0 Liters (242 cubic inches)

Engine 1 Configuration:

Inline 6-cylinder (I6)

Engine 1 Valve Train:

Overhead Valve (OHV), 12 valves

Engine 1 Horsepower:

185 hp @ 4,600 rpm (approx.)

Engine 1 Torque:

220 lb-ft @ 3,200 rpm (approx.)

Engine 2 Displacement:

4.7 Liters (285 cubic inches)

Engine 2 Configuration:

V8 (90-degree)

Engine 2 Valve Train:

Overhead Valve (OHV), 16 valves

Engine 2 Horsepower:

230 hp @ 4,700 rpm (approx.)

Engine 2 Torque:

325 lb-ft @ 3,200 rpm (approx.)

Fuel Delivery:

Multi-port Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline

Coolant Type:

Chrysler HOAT (50/50 mix of antifreeze and distilled water)

🔧 Transmission

Transmission 40L Model:

42RE (4-speed automatic)

Transmission 47L Model:

45RFE / 545RFE (4-speed automatic with overdrive, later 5-speed)

Transfer Case Options:

Selec-Trac NV231, Command-Trac NV242, Quadra-Trac II NV247 (depending on trim and drivetrain)

Automatic Transmission Fluid:

ATF+4 (MS-9602) or equivalent

📐 Dimensions

Wheelbase:

116.1 inches (2950 mm)

Length:

186.6 inches (4740 mm)

Width:

73.3 inches (1862 mm)

Height:

67.5 inches (1715 mm)

Curb Weight:

4,000 - 4,500 lbs (approx., varies by configuration)

Towing Capacity:

Up to 5,000 lbs (with optional tow package)

🛡️ Safety Features

NHTSA Front Crash Test:

4-star driver, 4-star passenger (as per NHTSA data for similar vehicles)

IIHS Crash Test:

Acceptable (for the era, specific scores vary)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Optional Traction Control System (TCS)

Airbags:

Driver and front passenger airbags, optional side-impact airbags.

Seat Belts:

Front and rear seat belts, driver and front passenger pretensioners.

💡 Technology Features

Audio System:

Factory AM/FM/CD or Cassette players, optional Infinity Gold premium audio system.

Climate Control:

Manual or automatic climate control systems.

Cruise Control:

Standard cruise control.

Memory Seats:

Available on higher trim levels.

Phone Integration:

No integrated Bluetooth or smartphone connectivity (aftermarket solutions available).

🔧 Maintenance

Oil Change Interval:

Every 3,000-7,500 miles or 6-12 months, depending on driving conditions and oil type used (refer to manual for specific recommendations).

Engine Air Filter Replacement:

Every 15,000-30,000 miles or as needed based on inspection.

Transmission Fluid Change:

Every 30,000-60,000 miles, depending on usage and fluid type.

Coolant Flush Replace:

Every 30,000-60,000 miles or 3-5 years.

Engine Oil Type:

SAE 5W-30 for 4.0L I6, SAE 5W-30 or 10W-30 for 4.7L V8 (check owner's manual for specific API service classification, typically API SJ or higher).

Power Steering Fluid:

Chrysler Power Steering Fluid or equivalent (ATF+4 may be used in some applications, consult manual).

Brake Fluid:

DOT 3 or DOT 4 Brake Fluid

Common Problems:

Radiator leaks (especially plastic tanks), heater core failure, coolant leaks from intake manifold gaskets (4.7L V8), U-joint wear, transfer case chain stretch, front differential pinion seal leaks, power steering pump leaks, ABS sensor failures, exhaust manifold cracks (4.7L V8).

Recall Information:

Refer to the manual or NHTSA website for any applicable recalls for the 1999 Grand Cherokee.

📚 Vehicle History

Jeep Legacy:

Jeep has a long history rooted in military vehicles, evolving into a brand synonymous with off-road capability and ruggedness.

Zj To Wj Transition:

The 1999 model year marked the introduction of the second-generation Grand Cherokee (WJ), replacing the ZJ. It featured a completely new body and chassis, offering improved aerodynamics, a more refined ride, and a wider stance.

Engineering Focus:

The WJ generation aimed to blend Jeep's traditional off-road prowess with increased on-road comfort and luxury, competing more directly with established luxury SUVs.

Manufacturing Location:

Jefferson North Assembly Plant, Detroit, Michigan, USA.

🏆 Awards & Recognition

Segment Awards:

Often recognized for its blend of luxury, capability, and off-road prowess within the SUV market of its time.

Consumer Reports Ratings:

Ratings varied, with common issues impacting predicted reliability in some years, but generally praised for comfort and capability.

Emissions Compliance:

Compliant with EPA emissions standards for 1999 model year vehicles.