🏷️ Basic Information

Make:

Chevrolet

Model:

Corvette

Generation:

C4

Year:

1989

👋 Introduction

Market Position:

Essential resource for owners and independent technicians seeking accurate, dealer-level repair information for the 1989 Chevrolet Corvette C4.

Competitive Analysis:

Unlike generic repair guides, this manual provides vehicle-specific, factory-level detail, enabling DIY enthusiasts and professionals to perform accurate diagnostics and repairs, saving time and money compared to relying solely on dealerships.

Key Features:

Complete A-Z repair coverage, vehicle-specific data, step-by-step instructions, diagrams, illustrations, wiring schematics, specifications, printable PDF format, cross-platform compatibility (Windows & Mac).

Target Audience:

1989 Chevrolet Corvette C4 owners, DIY mechanics, automotive repair shops, and enthusiasts.

Value Proposition:

Empowers owners to perform their own maintenance and repairs, understand their vehicle better, and maintain its value by following factory-recommended procedures.

📋 Manual Details

Coverage Scope:

All models and all repairs A-Z

Page Count:

Not specified, but described as a comprehensive PDF

Manual Type:

Service and Repair Manual (Factory Equivalent)

Language:

English

Format:

PDF

Compatibility:

Windows Vista 32/64, XP, ME, 98, NT, 2000, and Mac.

Additional Info:

Requires Adobe PDF Reader and Winzip (free downloads).

📖 Manual Coverage

Systems Covered:

Maintenance, Engine, Control System, Mechanical, Fuel Service Specifications, Emission Control, Intake Exhaust Cooling, Lube, Ignition Starting Charging, Auto Transmission, Clutch, Manual Transmission, Transfer Propeller Shaft, Drive Shaft, Differential, Axle Suspension, Tire & Wheel, Brake Control, Brake, Parking Brake, Steering Column, Power Steering, Air Condition, Suppl Restraint System, Seat Belt, Engine Immobilizer, Cruise Control, Wiper & Washer, Door Lock, Meter Audio/Visual, Horn, Windshield/Glass Mirror, Instrument Panel, Seat, Engine Hood/ Door, Exterior & Interior, Electrical, Multiplex/ Can Communication, and more.

Procedures Included:

Step-by-step instructions, diagnostic procedures, repair procedures, maintenance procedures, component testing, troubleshooting guides, electrical diagnostics, wiring schematics.

Technical Depth:

Vehicle-specific, exact same information used by dealership technicians, covering all repairs from basic maintenance to complex diagnostics and rebuilds.

Wiring Schematics Included:

Yes, comprehensive wiring schematics are a key feature.

Diagnostics Covered:

Detailed diagnostic procedures for all major systems, including engine, transmission, brakes, and electrical.

Body And Trim Coverage:

Includes details on exterior panels, interior trim, glass, and seals.

Electrical System Coverage:

Comprehensive coverage of the entire electrical system, including lighting, power accessories, sensors, and ECUs, supported by detailed wiring diagrams.

Chassis And Suspension Coverage:

Covers front and rear suspension components, steering system, wheel bearings, and alignment specifications.

📊 Manual Specifications

File Format:

PDF

File Searchability:

Likely searchable PDF text, enhancing ease of use.

File Organization:

Single, consolidated PDF file for easy navigation, eliminating the need to flip through multiple physical books.

Print Quality:

High detail, printable pages with the ability to blow up images and print enlarged copies.

Binding Type:

Digital (PDF) - no physical binding, allowing for selective printing.

Paper Type:

N/A (Digital PDF, printable on user's choice of paper)

⚙️ Engine Specifications

Primary Engine:

5.7L (350 ci) L98 Tuned Port Injection (TPI) V8

Horsepower:

245 hp @ 4,000 rpm (approximate)

Torque:

340 lb-ft @ 3,200 rpm (approximate)

Fuel System:

Tuned Port Injection (TPI)

Engine Code:

L98

Bore X Stroke:

4.00 in x 3.48 in (101.6 mm x 88.4 mm)

Compression Ratio:

9.1:1

Valvetrain:

Overhead Valve (OHV), 16 valves (2 per cylinder)

Cooling System:

Pressurized liquid cooling system with fan clutch and electric cooling fan.

🔧 Transmission

Transmission Standard:

4-speed automatic (700R4 / 4L60)

Transmission Optional:

None offered for the 1989 model year.

Transmission Features:

Electronic overdrive, lock-up torque converter.

Transmission Fluid Capacity:

Approximately 12 pints (5.7 Liters) for the 700R4/4L60 automatic transmission (dry fill).

Transmission Gear Ratios:

Manual transmission ratios are not applicable as only automatic was offered for this specific model year.

📐 Dimensions

Wheelbase:

96.2 inches (2443 mm)

Length:

178.4 inches (4531 mm)

Width:

70.4 inches (1788 mm)

Height:

46.7 inches (1186 mm)

Curb Weight:

3,315 lbs (1504 kg) (approximate)

Gross Vehicle Weight Rating:

Not typically specified for sports cars, focus on curb weight.

Front Track:

60.2 inches (1529 mm)

Rear Track:

61.1 inches (1552 mm)

Seating Capacity:

2

Cargo Volume:

Approximately 14.4 cubic feet (rear compartment).

🛡️ Safety Features

NHTSA Rollover Rating:

Not applicable or rated for this vehicle type.

Active Features:

Anti-lock Braking System (ABS), Traction Control System (TCS) introduced later in C4 generation but not standard on '89.

Passive Features:

3-point seat belts, reinforced safety cage, energy-absorbing steering column, driver's side airbag (introduced in 1990).

Front Brakes:

12.1-inch vented disc with 4-piston calipers

Rear Brakes:

11.5-inch vented disc with 4-piston calipers

Steering Type:

Power-assisted rack and pinion

💡 Technology Features

Infotainment System:

Factory AM/FM stereo with cassette player, optional CD player.

Driver Assistance:

Anti-lock Braking System (ABS).

Anti Lock Braking System Details:

Provides enhanced braking control, particularly during emergency stops, by preventing wheel lock-up.

Connectivity:

Basic analog systems, no modern connectivity features like Bluetooth or USB.

Instrumentation:

Digital speedometer, analog tachometer, fuel gauge, oil pressure gauge, coolant temperature gauge, voltmeter.

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 miles or 6 months, depending on driving conditions (refer to manual for specific recommendations).

Tune Up Interval:

Recommended at 30,000-60,000 miles for spark plugs, distributors, etc. (refer to manual).

Brake Fluid Change Interval:

Recommended every 2 years or 30,000 miles.

Engine Oil Type:

SAE 5W-30 or 10W-30 (refer to manual for specific viscosity based on ambient temperature)

Coolant Type:

Ethylene glycol based coolant, 50/50 mix with distilled water.

Transmission Fluid Type:

Dexron-III (or equivalent)

Brake Fluid Type:

DOT 3

Power Steering Fluid Type:

Dexron-III (or equivalent)

Known Issues:

Potential for aging fuel injectors (TPI), aging rubber and plastic components due to age, differential seal leaks, exhaust manifold leaks, and HVAC system components.

Common Maintenance Tasks:

Spark plug replacement, ignition coil inspection, differential fluid change, coolant flush, fuel filter replacement, and brake system maintenance.

Oil Filter Part Number:

AC PF44 or equivalent (specific part numbers can be found within the manual).

Air Filter Part Number:

Fram CA3490 or equivalent (specific part numbers can be found within the manual).

📚 Vehicle History

Brand Heritage:

Chevrolet has a long history of producing performance vehicles, with the Corvette being its flagship sports car since 1953, representing American automotive engineering and performance.

Model Evolution:

The C4 generation (1984-1996) marked a significant departure from previous Corvettes with its advanced styling, modern chassis, and focus on handling and technology. The 1989 model year saw updates including improved aerodynamics and the introduction of the optional Z51 performance handling package.

Production Location:

Bowling Green, Kentucky, USA

Production Years For C4:

1984-1996

Model Year Changes 1989:

Introduction of a new dashboard design with a digital tachometer and analog speedometer, improved aerodynamics, and optional Z51 performance handling package.

🏆 Awards & Recognition

Recognitions:

Corvette consistently ranked as a premier American sports car during its era, praised for performance and handling advancements in the C4 generation.