🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Model Code:

XJ

Year:

1999

Product Name:

1999 Jeep Grand Cherokee XJ Service Repair Manual Download

👋 Introduction

Jeep Cherokee Xj Positioning:

The 1999 Jeep Cherokee XJ represented the pinnacle of the XJ platform, known for its robust off-road capability, compact size, and distinctive unibody construction. It competed in the compact SUV segment but was often favored by off-road enthusiasts for its superior trail performance compared to many rivals.

Competitors 1999:

Key competitors in 1999 included the Toyota RAV4, Honda CR-V, Ford Explorer, and Chevrolet Blazer. The XJ's advantage lay in its traditional Jeep ruggedness and off-road prowess, differentiating it from more car-like crossovers.

Xj Key Features:

Compact dimensions, excellent approach/departure angles, available Selec-Trac and Command-Trac 4WD systems, solid front axle (until 1999), strong aftermarket support, legendary durability.

📋 Manual Details

Manual Type:

Service and Repair Manual

Language:

English

Format:

Digital Download (PDF)

Estimated Page Count:

Over 1500 pages (typical for this era and scope)

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, block, pistons, connecting rods, crankshaft, lubrication system, cooling system, fuel system, exhaust system, engine diagnostics, timing components.

Engine Performance:

Engine management system (ECU), ignition system, emissions control, fuel injection, sensor data, diagnostic trouble codes (DTCs).

Transmission Manual:

NV3550 manual transmission: disassembly, inspection, assembly, clutch system, shift linkages, transmission fluid specifications.

Transmission Automatic:

42RE, 44RE, 45RFE automatic transmissions: disassembly, inspection, assembly, torque converter, valve body, hydraulic circuits, transmission fluid specifications, electronic controls.

Drivetrain:

Transfer case (NP242, NP231): operation, servicing, removal, installation. Front and rear axle assemblies: gears, bearings, seals, lubrication, locking differentials (if applicable).

Suspension:

Front suspension (solid axle, leaf springs/coil springs, U-joints), rear suspension (leaf springs), steering system (power steering pump, steering gear/rack), wheel alignment specifications.

Brakes:

Front disc brakes, rear drum brakes (or disc brakes on some trims), ABS system, brake fluid specifications, master cylinder, power booster, parking brake.

Electrical System:

Battery, charging system (alternator), starting system (starter motor), lighting (headlights, taillights, interior), wiring diagrams for all circuits, fuses, relays.

Body And Chassis:

Body panels, doors, hood, tailgate, bumpers, interior trim, seats, glass, weatherstripping, frame maintenance, rust prevention.

HVAC:

Heating system, air conditioning system, blower motor, evaporator, condenser, refrigerant handling, dashboard controls, cabin air filter.

Routine Maintenance:

Oil changes, filter replacements, fluid checks and top-offs, tire rotations, spark plug replacement, brake inspections, belt inspections.

Troubleshooting:

Systematic diagnostic procedures for common problems, symptom-based troubleshooting guides, diagnostic trouble code (DTC) interpretation.

Component Repair And Rebuild:

Detailed step-by-step instructions for removing, disassembling, inspecting, repairing, and reassembling major components.

Wiring And Electrical Diagnostics:

Comprehensive wiring diagrams, troubleshooting for electrical faults, component testing procedures, connector pinouts.

Body And Interior Repair:

Procedures for body panel replacement, door mechanism repair, interior trim removal and installation, glass replacement.

Depth Of Coverage:

Comprehensive. Covers basic maintenance to complete engine and transmission rebuilds. Includes detailed diagnostic procedures and specifications.

📊 Manual Specifications

Digital Format:

PDF (Portable Document Format)

Image Resolution:

High resolution for clear diagrams and text.

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Code:

4.0L Inline-6 (OHV)

Engine Displacement:

3957 cc (241.7 cubic inches)

Engine Configuration:

Inline-6, Overhead Valve (OHV)

Horsepower:

185 hp @ 4600 rpm (approx.)

Torque:

220 lb-ft @ 3000 rpm (approx.)

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline (87 octane recommended)

ECU Type:

Chrysler NGC (Next Generation Controller) or equivalent for 1999

🔧 Transmission

Transmission Type Std:

4-Speed Automatic (42RE)

Transmission Type Opt:

5-Speed Manual (NV3550)

4Wd Systems:

Selec-Trac (full-time 4WD) and Command-Trac (part-time 4WD) optional.

📐 Dimensions

Wheelbase:

103.4 inches (2626 mm)

Length:

168.0 inches (4267 mm)

Width:

70.5 inches (1791 mm)

Height:

64.1 inches (1628 mm)

Ground Clearance:

8.4 inches (213 mm) at lowest point (e.g., exhaust)

Curb Weight:

Approx. 3,300 - 3,600 lbs (1497 - 1633 kg) depending on configuration.

Cargo Volume Behind Rear Seat:

Approx. 34.0 cubic feet

Cargo Volume With Rear Seat Folded:

Approx. 70.5 cubic feet

🛡️ Safety Features

NHTSA Frontal Impact Driver:

4 Stars (1999 model year testing)

NHTSA Frontal Impact Passenger:

4 Stars (1999 model year testing)

ABS:

Anti-lock Braking System (ABS) available on 4-wheel disc brake models or as an option.

Airbags:

Driver and front passenger airbags.

Seatbelts:

3-point seat belts with pretensioners for front occupants.

💡 Technology Features

Audio System:

Factory AM/FM radio with cassette player and optional CD player. Speaker configurations vary by trim level.

Dashboard Features:

Analog gauges for speedometer, tachometer, fuel, engine temperature, and oil pressure. Warning lights for various systems.

Cruise Control:

Available cruise control system.

Connectivity Options:

Limited by era. Primarily basic audio connectivity. No Bluetooth or USB ports standard.

🔧 Maintenance

Oil Change Interval:

Every 3,000 to 5,000 miles (or 6 months), depending on driving conditions and oil type used. Refer to manual for specific recommendations.

Transmission Fluid Change:

Every 30,000 to 60,000 miles for automatic transmissions. Manual transmission fluid inspection and potential change every 60,000 miles.

Coolant Flush:

Every 30,000 to 50,000 miles (or 2-3 years).

Spark Plugs:

Inspect every 30,000 miles, replace as needed (typically every 60,000-100,000 miles for modern plugs).

Engine Oil Type:

SAE 10W-30 or 10W-40 API SN or higher (check owner's manual for specific viscosity and API service rating).

Engine Oil Capacity:

6 US quarts (5.7 Liters) with filter for 4.0L engine.

Automatic Transmission Fluid:

ATF+4 (Mopar recommended for 42RE/44RE/45RFE). Verify with manual.

Transfer Case Fluid:

ATF+4 or Mopar Manual Transmission Lubricant (for NP231/242).

Power Steering Fluid:

Mopar Power Steering Fluid or equivalent.

Brake Fluid:

DOT 3.

Common Xj Issues:

Head gasket leaks (pre-1995 typically, but can occur), cracked exhaust manifolds, CPS (Crankshaft Position Sensor) failure, radiator leaks, water pump failure, rust on rocker panels and quarter panels, interior trim wear.

Common Xj Issues Continued:

Leaf spring wear and sag, U-joint failure, vacuum line leaks, starter motor issues, alternator issues.

📚 Vehicle History

Jeep Brand Legacy:

Jeep, a division of Chrysler Corporation at the time, has a storied history dating back to World War II with the Willys MB Jeep. Known for its off-road prowess and ruggedness.

Xj Generation Timeline:

The Jeep Cherokee (XJ) was introduced in 1984 and was a groundbreaking vehicle for its unibody construction in an SUV. It underwent several updates, with the 1997 redesign being the last major overhaul before its discontinuation in 2001.

Xj Production Years:

1984-2001 (North America)

Xj Manufacturing Location:

Toledo, Ohio, USA

🏆 Awards & Recognition

Xj Recognition:

Consistently praised for its off-road capabilities and durability by automotive publications and off-road communities. Often cited as a benchmark for compact SUVs.

Consumer Reports Rating:

Varied over its lifespan, with praise for capability but occasional criticism of ride quality and reliability in specific years/components.