🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Year:

1999

Platform Code:

WJ

Chassis Code:

WJ

👋 Introduction

Segment:

Mid-size Luxury SUV

Target Audience:

DIY enthusiasts, independent repair shops, Jeep owners seeking in-depth repair knowledge

Competitors 1999:

Ford Explorer, Chevrolet Blazer, Toyota 4Runner, Land Rover Discovery

Vehicle Highlights:

Robust platform, comfortable interior, capable off-road performance

Manual Value Proposition:

Empowers owners to perform repairs and maintenance with confidence, saving on labor costs and ensuring quality.

📋 Manual Details

Primary Coverage:

All service and repair for Jeep Grand Cherokee WJ (1999 model year)

Secondary Coverage:

Maintenance schedules, troubleshooting guides, diagnostic procedures

Estimated Page Count:

1000+

Type:

Service and Repair Manual

Scope:

Comprehensive

Language:

English

Format:

Digital Download (PDF)

Searchable:

Yes

Printable:

Yes

📖 Manual Coverage

Powertrain:

Engine, Transmission, Driveline, Fuel System, Exhaust System

Chassis:

Suspension, Steering, Brakes, Wheels, Tires

Electrical:

Wiring Diagrams, Lighting, Instrumentation, Audio System, Power Accessories, Engine Control Module (ECM), Body Control Module (BCM)

Body:

Body Panels, Doors, Hood, Tailgate, Interior Trim, HVAC (Heating, Ventilation, and Air Conditioning)

Maintenance:

Oil Changes, Filter Replacements, Fluid Checks and Replenishment, Spark Plug Replacement, Belt Inspection/Replacement

Repair:

Engine Overhaul, Transmission Rebuild, Brake Component Replacement, Suspension Bushing Replacement, Electrical Component Diagnosis and Repair

Troubleshooting:

Diagnostic Flowcharts, Symptom-Based Troubleshooting, Common Issue Diagnosis

Installation:

Accessory Installation, Component Replacement Procedures

Depth:

Complete overhaul and repair procedures, detailed diagnostic information, wiring schematics

Precision:

Torque specifications, clearances, diagnostic trouble codes (DTCs)

📊 Manual Specifications

Standard:

PDF

Resolution:

High-resolution, suitable for professional printing

Applicable Format:

N/A (Digital Download)

Applicable Format:

N/A (Digital Download)

⚙️ Engine Specifications

Engine 1:

4.0L Inline 6-cylinder (PowerTech)

Engine 1 Code:

AMC 242

Engine 1 Displacement:

3956 cc (242 ci)

Engine 1 Bore X Stroke:

3.88 x 3.41 inches (98.5 x 86.7 mm)

Engine 1 Compression Ratio:

8.8:1

Engine 1 Horsepower:

185 hp @ 4600 rpm

Engine 1 Torque:

235 lb-ft @ 3000 rpm

Engine 2:

4.7L V8 (PowerTech)

Engine 2 Code:

EVM

Engine 2 Displacement:

4701 cc (287 ci)

Engine 2 Bore X Stroke:

3.88 x 3.31 inches (98.5 x 84.1 mm)

Engine 2 Compression Ratio:

9.0:1

Engine 2 Horsepower:

220 hp @ 4700 rpm

Engine 2 Torque:

285 lb-ft @ 3200 rpm

Fuel Delivery:

Multi-Point Fuel Injection (MPFI)

Fuel Type:

Unleaded Gasoline (87 octane recommended)

🔧 Transmission

Transmission Standard:

42RE 4-Speed Automatic (with 4.0L I6)

Transmission Optional:

45RFE 4-Speed Automatic (with 4.7L V8)

Drivetrain:

Part-time Command-Trac 4WD, Full-time Selec-Trac 4WD (Optional)

Transfer Case:

NV242 (Selec-Trac), NV242J (Command-Trac)

📐 Dimensions

Wheelbase:

116.0 inches (2946 mm)

Length:

184.0 inches (4674 mm)

Width:

74.0 inches (1880 mm)

Height:

67.0 inches (1702 mm)

Ground Clearance:

8.4 inches (213 mm)

Cargo Volume Behind Rear Seat:

33.3 cubic feet (943 liters)

Cargo Volume Max:

78.0 cubic feet (2209 liters)

Curb Weight Est:

4200 - 4700 lbs (1905 - 2132 kg)

Towing Capacity Max:

5000 lbs (2268 kg)

🛡️ Safety Features

NHTSA Driver Front Impact:

4/5 Stars (1999 Model Year)

NHTSA Passenger Front Impact:

4/5 Stars (1999 Model Year)

ABS:

Standard (4-wheel disc brakes)

Traction Control:

Optional (on some models)

Airbags Front:

Standard Driver and Passenger Frontal Airbags

Seatbelts:

3-point seat belts with pretensioners

💡 Technology Features

Audio System:

Optional premium audio systems (e.g., Infinity).

Climate Control:

Manual or optional dual-zone automatic climate control.

Cruise Control:

Standard

Keyless Entry:

Optional

Aux Input:

Not standard, aftermarket solutions available.

🔧 Maintenance

Oil Change Interval:

Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6 months, whichever comes first (depending on oil type and driving conditions).

Air Filter Replacement:

Every 15,000 - 30,000 miles (24,000 - 48,000 km) or annually.

Spark Plug Replacement 4.0L:

Approx. 100,000 miles (160,000 km)

Spark Plug Replacement 4.7L:

Approx. 100,000 miles (160,000 km)

Engine Oil 4.0L:

API SJ, SAE 5W-30 (See manual for viscosity and specification details)

Engine Oil 4.7L:

API SJ, SAE 5W-30 (See manual for viscosity and specification details)

Transmission Fluid:

ATF+4 (Mopar)

Coolant:

Mopar OAT (Orange) Antifreeze/Coolant, 50/50 mix

Brake Fluid:

DOT 3

Common Issues Engine 4.0L:

Cracked cylinder heads (less common than earlier generations), oil filter housing leaks.

Common Issues Engine 4.7L:

Cylinder head gasket issues, valve spring issues, lifter noise.

Common Issues Transmission:

Solenoid pack failures in 42RE, premature wear on clutch packs.

Common Issues Suspension:

Worn ball joints, tie rod ends, and control arm bushings.

Common Issues Electrical:

Body control module (BCM) issues, window regulator failures, HVAC blower motor resistor failure.

📚 Vehicle History

Jeep Legacy:

Jeep has a long-standing reputation for off-road capability and ruggedness dating back to WWII.

Wj Generation Introduction:

The WJ generation replaced the ZJ Grand Cherokee and was introduced for the 1999 model year, featuring a unibody construction with integrated body frame (IBF) for improved rigidity and ride quality.

Wj Key Changes From Zj:

Newer powertrain options, more refined interior, improved aerodynamics, a wider stance.

Production Plant:

Jefferson North Assembly Plant, Detroit, Michigan, USA

Production Years:

1999-2004

🏆 Awards & Recognition

4X4 Of The Year:

The Grand Cherokee platform often received accolades for its off-road prowess from publications like Four Wheeler magazine.