🏷️ Basic Information

Make:

Jeep

Model:

Grand Cherokee

Chassis Code:

ZG

Year:

1997

Drivetrain:

4X4

Steering Side:

RHD

Powertrain Code Example:

4.0L HO I6 (e.g., 242)

Chassis Code Context:

ZG refers to the Grand Cherokee exported to markets like Australia and the UK, commonly associated with the second generation (WJ) but this manual specifically denotes the ZG designation for the 1997 model year, which aligns with the late phase of the first generation (ZJ).

👋 Introduction

Market Position:

The Jeep Grand Cherokee ZG (1997) was positioned as a premium, full-size SUV, offering substantial off-road capability combined with a comfortable on-road presence, competing with vehicles like the Ford Explorer, Chevrolet Blazer (S-10 Blazer), and Toyota 4Runner of its era.

Competitive Analysis:

The ZG model, part of the ZJ generation, was known for its robust V8 engine options and strong towing capacity, appealing to buyers seeking a blend of utility and luxury in an SUV. Its unibody construction offered a more refined ride than body-on-frame competitors, though some rivals offered more fuel-efficient powertrains.

Key Features:

Iconic Jeep styling, renowned Quadra-Trac 4WD system, available V8 engines, comfortable interior for its time, good towing capacity, and strong off-road heritage.

📋 Manual Details

Coverage Scope:

Comprehensive service and repair procedures.

Estimated Page Count:

Approximately 800-1200 pages (typical for a complete factory service manual of this era).

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

Likely a digital format (PDF) for this listing, but could also be available in printed form.

📖 Manual Coverage

Engine:

4.0L Inline 6-Cylinder (HO) and 5.2L/5.9L V8 Magnum engines, including diagnostics, component testing, overhaul, and specifications.

Transmission:

42RE, 44RE (Automatic), and NV242/NV249 (Transfer Case) service and repair procedures.

Drivetrain:

Front and rear axle assemblies, propeller shafts, universal joints, CV joints, and Selec-Trac/Quadra-Trac systems.

Suspension:

Front and rear suspension systems (leaf spring rear, coil spring front), shock absorbers, bushings, and alignment specifications.

Brakes:

Front and rear disc brakes, hydraulic system, parking brake, ABS system (if equipped).

Steering:

Power steering system, steering column, steering linkage, and associated components.

Electrical System:

12V electrical system, battery, alternator, starter, ignition system, lighting, power windows/locks, accessory circuits, diagnostic trouble codes (DTCs).

HVAC:

Heating, ventilation, and air conditioning (HVAC) system service, including refrigerant handling, blower motor, and climate controls.

Body Exterior:

Body panels, doors, windows, bumpers, trim, and paint repair.

Body Interior:

Interior trim, seats, dashboard, instrumentation, and headliner.

Body Chassis:

Frame and unibody structure, mounting points, and corrosion prevention.

Maintenance:

Scheduled maintenance intervals, fluid changes (oil, coolant, brake fluid, transmission fluid, differential fluid), filter replacements, lubrication.

Diagnostics:

System diagnosis, troubleshooting flowcharts, wiring diagrams, component testing procedures, diagnostic trouble code (DTC) interpretation.

Repair:

Detailed step-by-step repair instructions for all major components and systems, including engine rebuilds, transmission overhauls, suspension and brake repairs.

Installation:

Procedures for installing replacement parts, accessories, and major component assemblies.

Specifications:

Torque specifications, clearances, fluid capacities, electrical specifications, emissions data, and alignment settings.

Wiring Diagrams:

Complete electrical schematics and wiring diagrams for all vehicle systems.

Depth:

Comprehensive, covering everything from basic fluid changes to full engine and transmission rebuilds, including advanced diagnostics and component-level repairs.

📊 Manual Specifications

File Format:

PDF (for digital delivery)

Print Quality:

High-resolution scans ensuring clarity of text, diagrams, and images.

Binding Type:

N/A (for digital format); Traditionally bound for printed versions.

Paper Type:

N/A (for digital format); Typically printed on durable, matte paper for printed versions.

Searchability:

Searchable text for quick access to information.

⚙️ Engine Specifications

Engine 1 Displacement:

4.0 Liters (242 cubic inches)

Engine 1 Configuration:

Inline 6-Cylinder, Overhead Valve (OHV)

Engine 1 Horsepower:

Approx. 185 hp @ 4700 rpm

Engine 1 Torque:

Approx. 220 lb-ft @ 3200 rpm

Engine 1 Fuel Delivery:

Sequential Multi-Port Fuel Injection (MPI)

Engine 1 Cooling System:

Pressurized liquid cooling system

Engine 2 Displacement:

5.2 Liters (318 cubic inches) V8 Magnum

Engine 2 Configuration:

V8, Overhead Valve (OHV)

Engine 2 Horsepower:

Approx. 205-220 hp @ 4400 rpm

Engine 2 Torque:

Approx. 290-300 lb-ft @ 3200 rpm

Engine 3 Displacement:

5.9 Liters (360 cubic inches) V8 Magnum

Engine 3 Configuration:

V8, Overhead Valve (OHV)

Engine 3 Horsepower:

Approx. 230-245 hp @ 4800 rpm

Engine 3 Torque:

Approx. 330-345 lb-ft @ 3200 rpm

Compression Ratio 40L:

8.75:1

Compression Ratio 52L:

8.75:1

Compression Ratio 59L:

8.1:1

Fuel Type Recommendation:

Unleaded gasoline (87 octane minimum recommended for 4.0L and 5.2L; 89 octane minimum for 5.9L)

Ignition System:

Distributorless Ignition System (DIS) or Distributor with Electronic Ignition, depending on build date and specific engine.

🔧 Transmission

Transmission Type Standard:

4-speed Automatic Transmission (42RE or 44RE)

Transmission Type Optional:

5-speed Manual Transmission (NV3500) may have been available in some markets, though less common.

Transfer Case Options:

NV242 Selec-Trac (full-time 4WD with 2WD option) or NV249 (full-time 4WD with viscous coupling).

Transmission Fluid Spec:

ATF+3 (Chrysler spec) or equivalent.

📐 Dimensions

Length:

Approx. 179.1 inches (4550 mm)

Width:

Approx. 70.5 inches (1791 mm)

Height:

Approx. 64.4 inches (1636 mm)

Wheelbase:

Approx. 107.1 inches (2720 mm)

Seating Capacity:

5 passengers

Cargo Volume Rear Seats Up:

Approx. 42.8 cubic feet (1211 liters)

Cargo Volume Rear Seats Down:

Approx. 77.2 cubic feet (2186 liters)

Curb Weight:

Approx. 3700-4200 lbs (1680-1905 kg), varies by engine and options.

Gross Vehicle Weight Rating:

Approx. 5500-6000 lbs (2495-2722 kg)

Towing Capacity:

Up to 6,500 lbs (2,948 kg) with appropriate towing package and engine.

🛡️ Safety Features

NHTSA Frontal Crash Test:

4-star rating (driver side) and 4-star rating (passenger side) for the 1997 model year (as per NHTSA data).

IIHS Crash Test Performance:

Generally rated as 'Good' or 'Acceptable' in frontal offset tests by IIHS for its generation.

ABS:

Standard 4-wheel Anti-lock Braking System (ABS) on most models.

Traction Control:

Optional traction control system on some models.

Airbags:

Driver and passenger front airbags.

Seatbelts:

Front seatbelt pretensioners.

Child Seat Anchors:

LATCH system not standard; child seat restraints typically rely on seatbelts.

💡 Technology Features

Infotainment System:

Basic AM/FM radio with cassette player and optional CD player. Analog climate controls and basic instrumentation.

Driver Assistance Features:

Limited to ABS and optional traction control. No advanced electronic driver aids like adaptive cruise control or lane departure warning were available.

Connectivity Options:

No integrated Bluetooth or USB connectivity. Auxiliary input for external devices may be present on aftermarket head units.

🔧 Maintenance

Oil Change Interval:

Every 3,000 miles (5,000 km) or 3 months, whichever comes first, under normal driving conditions. Severe conditions may require more frequent changes (e.g., every 1,500 miles or 3 months).

Tire Rotation Interval:

Every 6,000 miles (10,000 km).

Engine Air Filter Replacement:

Every 15,000 miles (24,000 km) or annually, or more often if driven in dusty conditions.

Spark Plug Replacement:

Every 30,000-60,000 miles (48,000-96,000 km), depending on spark plug type (copper vs. platinum).

Engine Oil Type:

API SN/SP, ILSAC GF-6A SAE 5W-30 (preferred for 4.0L and 5.2L/5.9L in most climates).

Engine Oil Capacity 40L:

Approx. 5 quarts (4.7 liters) with filter.

Engine Oil Capacity V8:

Approx. 5 quarts (4.7 liters) with filter (5.2L) or 6 quarts (5.7 liters) with filter (5.9L).

Coolant Type:

Chrysler HOAT (Hybrid Organic Acid Technology) coolant or equivalent; typically a 50/50 mix of antifreeze and distilled water.

Coolant Capacity:

Approx. 10-12 quarts (9.5-11.4 liters), depending on engine and heater core size.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Power Steering Fluid:

ATF+3 (Chrysler spec) or equivalent.

Differential Fluid Front Rear:

API GL-5, SAE 75W-90 or 80W-90 (check specific axle type, e.g., Dana 30 front, Dana 35/44 rear). Capacity typically around 1.5-2.5 quarts per axle.

Known Issues:

Common issues include distributorless ignition system (DIS) coil pack failures, leaking intake manifold gaskets (especially on early V8s), worn steering components (ball joints, tie rod ends), minor coolant leaks, and potential for rear main seal leaks. The NV249 transfer case can develop issues with its viscous coupler if not properly maintained. Rust on the unibody structure, particularly around the wheel wells and rocker panels, can be an issue in areas with road salt.

📚 Vehicle History

Brand Heritage:

Jeep, a brand with a rich military history, is synonymous with off-road capability and ruggedness, originating from the Willys MB Jeep of World War II.

Model Evolution:

The ZJ generation (1993-1998) was Jeep's first full-size SUV, introducing a more refined, unibody design compared to its predecessors. It evolved from the Cherokee XJ's platform but was significantly larger and more luxurious. The 1997 model year saw minor updates and refinements within the ZJ lifecycle before the introduction of the WJ generation in 1999.

Production Location:

Detroit, Michigan, USA (Jefferson North Assembly Plant).

Production Years Zj Generation:

1993-1998

🏆 Awards & Recognition

Recognitions:

The Jeep Grand Cherokee (ZJ generation) was generally well-received for its blend of luxury, capability, and American styling, often appearing on 'best of' lists for SUVs during its production run, though specific awards for the 1997 model year are less prominently documented than its overall generational success.