🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

1999

Platform:

WJ

Chassis Code:

WJ

👋 Introduction

Segment:

Mid-size SUV

Target Audience:

Off-road enthusiasts, families, individuals seeking a capable and comfortable SUV

Key Competitors:

Ford Explorer, Chevrolet Blazer/TrailBlazer, Toyota 4Runner, Nissan Pathfinder

Off Road Capability:

Renowned Jeep off-road prowess with available 4WD systems and solid axles

Powertrain Options:

Choice of robust inline-6 and powerful V8 engines

Interior Comfort:

Spacious interior, comfortable seating, refined ride for its class

Towing Capacity:

Strong towing capabilities

📋 Manual Details

Comprehensive Coverage:

Yes

Estimated Page Count:

1500+

Type:

Service and Repair Workshop Manual

Language:

English

Format:

Digital (likely PDF, though not explicitly stated)

File Format:

Likely PDF (searchable text and image quality depend on original source)

Print Quality:

Variable (dependent on digitization of original prints)

Binding Type:

N/A (for digital format)

Paper Type:

N/A (for digital format)

📖 Manual Coverage

Engine:

4.0L (AMC 242) I6, 4.7L (E.G.R.) V8 (PowerTech)

Transmission:

42RE (4-speed Automatic), NV3500 (5-speed Manual - less common, but applicable)

Drivetrain:

4WD (Selec-Trac, Quadra-Trac II), 2WD configurations

Suspension:

Front: Solid Dana 30, Rear: Solid Dana 35 or Dana 44a (depending on configuration)

Brakes:

Front Disc (Vented), Rear Disc (Solid)

Electrical:

Full wiring diagrams, lighting, ignition, charging system, starting system, instrument cluster, ECUs (PCM, BCM)

Fuel System:

Fuel injection (MPI), fuel pump, pressure regulator, injectors

Cooling System:

Radiator, water pump, thermostat, fan clutch/electric fan

Exhaust System:

Catalytic converter, mufflers, pipes

Steering:

Power steering system, steering column, linkage

Body And Chassis:

Frame construction, body panels, doors, glass, interior trim

HVAC:

Heating, Ventilation, Air Conditioning system components and operation

Safety Systems:

Airbags (SRS), seat belts

Routine Maintenance:

Oil change, filter replacement, fluid checks and changes, tire rotation, tune-ups

Engine Repair:

Overhaul, component replacement (e.g., head gasket, water pump, timing chain)

Transmission Repair:

Rebuild procedures, clutch replacement (manual), torque converter service (automatic)

Brake Service:

Pad/shoe replacement, rotor/drum service, caliper/wheel cylinder overhaul, brake fluid flush

Suspension And Steering Repair:

Ball joint replacement, tie rod end service, shock/strut replacement, power steering pump/rack replacement

Electrical Troubleshooting:

Diagnostic procedures, component testing, wiring harness repair

Diagnostics:

OBD-II (On-Board Diagnostics) system interpretation, fault code lookup

Bodywork And Collision Repair:

Panel alignment, door hinge adjustment, glass replacement

HVAC Repair:

Component replacement (compressor, condenser, evaporator), refrigerant service

Timing Belt Replacement:

Crucial for 4.7L V8 (interference engine)

Differential Service:

Fluid changes, bearing adjustment

Depth:

Comprehensive (from basic maintenance to complete engine and transmission rebuilds)

Diagnostic Tools Required:

Basic hand tools, diagnostic scan tool, multimeter, specialized tools as indicated

Torque Specifications:

Detailed torque values for all critical fasteners

Clearances And Tolerances:

Specifications for engine, transmission, and driveline components

Wiring Diagrams:

Detailed and component-specific wiring schematics

⚙️ Engine Specifications

Engine 1 Code:

AMC 242 (4.0L)

Engine 1 Configuration:

Inline 6-cylinder

Engine 1 Displacement:

242 cubic inches (3.96 liters)

Engine 1 Horsepower:

185 hp @ 4600 rpm (approx.)

Engine 1 Torque:

235 lb-ft @ 3000 rpm (approx.)

Engine 2 Code:

E.G.R. (PowerTech)

Engine 2 Configuration:

V8

Engine 2 Displacement:

4.7 liters (285 cubic inches)

Engine 2 Horsepower:

220 hp @ 4700 rpm (approx.)

Engine 2 Torque:

285 lb-ft @ 3400 rpm (approx.)

Fuel Delivery:

Multi-port Fuel Injection (MPI)

Recommended Fuel:

87 Octane (Unleaded)

Emissions Control:

Catalytic converter, EGR system

🔧 Transmission

Transmission 1 Type:

42RE 4-speed Automatic

Transmission 2 Type:

NV3500 5-speed Manual (Less common)

Automatic Transmission Control:

Electronically controlled with lock-up torque converter

Transfer Case Options:

Selec-Trac (242), Quadra-Trac II (247)

Automatic Transmission Fluid:

ATF+4 (Chrysler Specification)

Automatic Transmission Capacity:

Approx. 9.5 quarts (9.0 liters) for a drain and fill

📐 Dimensions

Wheelbase:

116.7 inches (2964 mm)

Length:

184.6 inches (4689 mm)

Width:

73.5 inches (1867 mm)

Height:

67.5 inches (1715 mm)

Curb Weight:

Approx. 4200 - 4600 lbs (1905 - 2087 kg) depending on configuration

Gross Vehicle Weight Rating Gvwr:

Approx. 5800 - 6000 lbs (2630 - 2721 kg)

🛡️ Safety Features

NHTSA Front Impact Driver:

4 Stars (for 1999 model year)

NHTSA Front Impact Passenger:

4 Stars (for 1999 model year)

IIHS Side Impact:

Acceptable (varies by specific test data)

ABS:

Standard Anti-lock Braking System (4-wheel)

Traction Control:

Available (e.g., on Quadra-Trac II models)

Airbags:

Driver and front passenger airbags (SRS)

Seat Belts:

Three-point seat belts with pretensioners for front occupants

💡 Technology Features

Audio System:

Available AM/FM stereo with CD player and/or cassette tape, optional premium audio systems (e.g., Infinity)

Navigation:

Optional factory navigation system was available on some trims

Cruise Control:

Standard

Keyless Entry:

Available

Power Windows Locks:

Standard on most trims, power rear liftgate glass

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 miles or 3-6 months (severe vs. normal service)

Engine Oil Filter Replacement:

With every oil change

Air Filter Replacement:

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

Transmission Fluid Change:

Every 30,000-60,000 miles (depending on service)

Coolant Flush:

Every 30,000-50,000 miles

Spark Plug Replacement 4.0L:

Approx. 100,000 miles (Platinum or Iridium plugs)

Spark Plug Replacement 4.7L:

Approx. 100,000 miles (Platinum or Iridium plugs)

Engine Oil Type:

SAE 5W-30 (Synthetic blend or full synthetic recommended)

Engine Oil Capacity 4.0L:

5 Quarts (4.7 Liters) with filter

Engine Oil Capacity 4.7L:

6 Quarts (5.7 Liters) with filter

Coolant Type:

Chrysler HOAT (Hybrid Organic Additive Technology) Antifreeze/Coolant, typically a Mopar OAT product or equivalent

Brake Fluid Type:

DOT 3

Common Issue 1:

Cracked cylinder heads on early 4.7L V8 engines (though less common on '99 models than later ones)

Common Issue 2:

Transmission solenoid issues (42RE)

Common Issue 3:

Worn suspension components (ball joints, control arm bushings) due to weight and usage

Common Issue 4:

Water pump leaks

Common Issue 5:

Blend door actuator failures in HVAC system

📚 Vehicle History

Jeep Legacy:

Jeep has a long-standing heritage in off-road vehicles, dating back to WWII

Wj Generation Introduction:

The WJ Grand Cherokee was introduced for the 1999 model year, replacing the ZJ generation. It featured a more refined interior and exterior, improved on-road manners, and a unibody construction (though still robust) compared to some earlier body-on-frame SUVs.

Key Design Changes Wj:

Quadra-Coil suspension (coil springs all around), improved aerodynamics, and a more luxurious interior.

Manufacturing Locations:

Detroit, Michigan, USA

🏆 Awards & Recognition

Motor Trend SUVyoty:

MotorTrend SUV of the Year for 1999

Off Road Magazine Awards:

Frequently cited for its off-road capability and market presence in enthusiast publications