🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Generation:

WJ

Year:

1999

👋 Introduction

Vehicle Segment:

Mid-size luxury SUV

Target Audience:

Owners seeking to perform DIY repairs, automotive technicians, parts suppliers

Key Competitors:

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

Manual Benefit:

Enables accurate part identification and ordering, saving time and preventing incorrect purchases.

Diagram Utility:

Exploded diagrams are invaluable for understanding how components fit together, aiding in both disassembly and reassembly.

Professional Quality:

Reflects factory-level documentation for precision and completeness.

📋 Manual Details

Primary Focus:

Parts Catalog / Exploded Diagrams

Scope:

Comprehensive OEM parts identification and numbering

Estimated Pages:

Varies based on specific edition, typically 500+ pages for complete OEM catalog

Type:

Parts Catalog / Parts List

Language:

English

Format:

Digital (e.g., PDF) or Printed

📖 Manual Coverage

Powertrain:

Engine components (short block, long block, cylinder heads, valvetrain, cooling, exhaust), Transmission (manual & automatic), Transfer Case, Drivetrain (differentials, axles, driveshafts, CV joints)

Chassis And Suspension:

Front and Rear Suspension (control arms, ball joints, bushings, shocks, springs, sway bars), Steering (steering gear, tie rods, power steering pump, hoses), Brakes (calipers, rotors, pads, master cylinder, ABS components, parking brake)

Body And Exterior:

Body Panels (fenders, doors, hood, tailgate), Bumpers, Grilles, Lighting (headlights, taillights, fog lights), Glass and Seals, Exterior Trim, Roof Rack, Towing Components

Interior And Comfort:

Seating, Interior Trim Panels, Dashboard, Center Console, HVAC (heater core, AC compressor, evaporator, controls), Audio System components, Seat Belts, Airbag components (covers only, not deployment)

Electrical And Electronics:

Wiring Harnesses, Fuses, Relays, Battery, Alternator, Starter Motor, Lighting circuits, Wiper system, Horn, Power Accessory components (windows, locks, mirrors)

Identification:

Part number identification, exploded view assembly diagrams for part placement, component listing

Assembly Disassembly:

Visual guidance for understanding component relationships and assembly order

Maintenance Tasks:

Identification of wear items and replacement parts for scheduled maintenance

Depth:

Detailed OEM component level identification, superseded part numbers where applicable

Diagrams:

High-quality exploded view diagrams allowing for precise identification of even small fasteners and brackets

Part Number Accuracy:

Manufacturer-specific part numbers crucial for ordering correct replacements

📊 Manual Specifications

Digital Format:

PDF (typically searchable and printable)

Diagram Clarity:

High resolution for clear visibility of all part details and text

Printed Format:

Coil-bound or perfect-bound for lay-flat usability in a workshop environment

Printed Format:

Durable, matte-finish paper suitable for shop environments

⚙️ Engine Specifications

Engine Code:

4.0L V8 (PowerTech)

Engine Displacement Liters:

4.0

Engine Configuration:

Inline-6 (I6) OHV 12v

Bore X Stroke:

3.88 in x 3.57 in (98.5 mm x 90.5 mm)

Compression Ratio:

8.7:1

Horsepower Gross:

185 hp @ 4400 rpm

Torque Gross:

245 lb-ft @ 2200 rpm

Engine Code:

4.7L V8 (PowerTech)

Engine Displacement Liters:

4.7

Engine Configuration:

V8 SOHC 16v

Bore X Stroke:

3.70 in x 3.35 in (94.0 mm x 85.0 mm)

Compression Ratio:

9.6:1

Horsepower Gross:

220 hp @ 4700 rpm

Torque Gross:

285 lb-ft @ 3200 rpm

Fuel Delivery:

Electronic Fuel Injection (MPI)

Recommended Fuel:

87 Octane (4.0L), 87 Octane recommended, 91 Octane recommended for optimal performance (4.7L)

🔧 Transmission

Transmission Type:

42RE 4-Speed Automatic (4.0L Engine)

Transmission Type:

45RFE 4-Speed Automatic (4.7L Engine)

Transfer Case Standard:

Selec-Trac NV242 2-speed transfer case (full-time 4WD)

Transfer Case Optional:

Quadra-Trac II NV247 2-speed transfer case with electronic full-time 4WD (standard on Limited, optional on others)

Gear Ratios 42Re:

2.74:1 (1st), 1.57:1 (2nd), 1.00:1 (3rd), 0.69:1 (4th)

Gear Ratios 45Rfe:

3.00:1 (1st), 1.61:1 (2nd), 1.00:1 (3rd), 0.75:1 (4th)

📐 Dimensions

Wheelbase:

116.0 inches (2946 mm)

Length:

189.8 inches (4821 mm)

Width:

74.1 inches (1882 mm)

Height:

67.4 inches (1712 mm)

Ground Clearance:

8.7 inches (221 mm)

Curb Weight Min:

4300 lbs (1950 kg) (approx. for 4.0L SE)

Gross Vehicle Weight Rating Gvwr:

5800-6000 lbs (2630-2722 kg) depending on configuration

Cargo Volume Behind Rear Seat:

37.5 cu ft (1062 L)

Cargo Volume With Rear Seat Folded:

74.6 cu ft (2113 L)

🛡️ Safety Features

NHTSA Frontal Driver:

4 stars (1999)

NHTSA Frontal Passenger:

4 stars (1999)

IIHS Frontal Offset:

Good (1999)

ABS:

Standard on all models (4-wheel disc ABS)

Traction Control:

Optional (TCS) on some models

Airbags Front:

Standard front driver and passenger airbags

Seatbelts:

3-point seat belts with pretensioners

💡 Technology Features

Audio Systems:

Standard AM/FM/Cassette/CD Player, optional Infinity Gold premium audio system with subwoofer

Navigation:

Optional factory-installed GPS navigation system available on higher trims

Cruise Control:

Standard

Parking Sensors:

Not available from the factory for this model year

Auxiliary Inputs:

No factory auxiliary input (e.g., 3.5mm jack) or USB ports

Remote Keyless Entry:

Optional

🔧 Maintenance

Oil Change Interval Engine:

Every 3,000-5,000 miles (4,800-8,000 km) or 6 months, depending on driving conditions (refer to owner's manual for specifics)

Transmission Fluid Change:

Every 30,000-60,000 miles (48,000-96,000 km) or as specified by Jeep. Filter should be replaced at the same time.

Coolant Flush:

Every 30,000 miles (48,000 km) or 2 years

Spark Plug Replacement 4.0L:

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

Spark Plug Replacement 4.7L:

Approx. 100,000 miles (160,000 km) (use correct type specified for V8)

Engine Oil Type 4.0L:

API Certified SAE 10W-30

Engine Oil Type 4.7L:

API Certified SAE 5W-30 or 10W-30 (check owner's manual for specific recommendations)

Engine Oil Capacity 4.0L:

5 US quarts (4.7 L) with filter

Engine Oil Capacity 4.7L:

6 US quarts (5.7 L) with filter

Transmission Fluid Type:

ATF+4 (Type 9546) for 45RFE, ATF+3 (Type 7176) for 42RE (Crucial to use correct fluid type)

Coolant Type:

Mopar OAT (Organic Acid Technology) or equivalent HOAT coolant (Pink)

Brake Fluid Type:

DOT 3

Common Issue Wipers:

Wiper motor failure, intermittent wiper problems (often related to switch or wiring)

Common Issue Cooling:

Plastic coolant reservoir cracking, thermostat housing leaks

Common Issue 4.7L V8:

Valve stem seal wear (leading to blue smoke on startup), cracked cylinder heads (less common but documented)

Common Issue Transfer Case:

Symptomatic popping or clunking from the transfer case, particularly Quadra-Trac II, may indicate chain stretch or wear

Common Issue Electrical:

Power window regulators failure, door lock actuator issues, short circuits in door wiring harnesses

Common Issue Suspension:

Worn ball joints, control arm bushings, and tie rod ends, leading to steering wander and tire wear

📚 Vehicle History

Jeep Legacy:

Jeep has a long history of producing capable off-road vehicles and SUVs since the 1940s.

Wj Introduction:

The WJ generation replaced the ZJ Grand Cherokee and introduced significant upgrades in refinement, interior space, and technology.

Wj Design:

Characterized by a more aerodynamic and rounded styling compared to its predecessor, a move away from the classic boxy Jeep silhouette.

Wj Powertrain Updates:

Introduction of the new 4.7L PowerTech V8 engine was a major upgrade for performance and refinement.

Production Years:

1999-2004

Manufacturing Locations:

Detroit, Michigan, USA (Jefferson North Assembly Plant)

🏆 Awards & Recognition

Automotive Journal Awards:

While specific awards for the 1999 model are not prominently documented, the WJ Grand Cherokee was generally well-received for its comfortable ride and capability.

Consumer Reports Ratings:

Consumer Reports ratings for the 1999 Grand Cherokee indicated average to below-average predicted reliability, particularly for early models.