🏷️ Basic Information

Make:

AM General

Model:

HUMMER H1

Year:

1995

Body Style:

All models (e.g., Wagon, Pickup, Open Top)

👋 Introduction

Positioning:

The HUMMER H1 occupied a unique niche in the automotive market as a civilian-derived, ultra-heavy-duty off-road vehicle.

Target Audience:

Off-road enthusiasts, military surplus collectors, individuals requiring extreme durability and capability.

Competitors:

Few direct competitors in its class, primarily niche off-road vehicles and specialized military vehicles.

Iconic Design:

Instantly recognizable, rugged, and imposing design.

Off Road Capability:

Unparalleled off-road prowess with high ground clearance, robust suspension, and locking differentials.

Durability:

Built to military specifications, emphasizing extreme robustness and longevity.

Manual Value:

Provides essential, dealer-level technical information for owners to maintain and repair their H1, saving significant costs.

📋 Manual Details

Manual Type:

Workshop Service Repair Manual

Language:

English

Format:

PDF

Distribution:

Dealership & Professional Auto Shop Grade

📖 Manual Coverage

Engine:

Detailed diagnostic, repair, and overhaul procedures for all engine variants.

Transmission:

Service and repair for the drivetrain, including transmission overhaul and component replacement.

Brakes:

Complete brake system service, including hydraulic components, ABS (if applicable), and parking brake.

Suspension:

Repair and adjustment procedures for independent front and rear suspension systems.

Electrical System:

Comprehensive wiring schematics, electrical diagrams, component testing, and troubleshooting.

Fuel System:

Service for fuel delivery, injection, and evaporative emission control systems.

Cooling System:

Maintenance and repair of the engine cooling system, including radiator and thermostat.

Exhaust System:

Repair and replacement of exhaust components.

Steering:

Service and repair for the power steering system.

Air Conditioning:

Diagnostic and repair procedures for the HVAC system.

Body Work:

Procedures for body panel alignment, repair, and component replacement.

Diagnostics:

Includes computer diagnostic codes and troubleshooting flowcharts.

Air Bags:

Information regarding airbag system components and safety precautions.

Maintenance:

Detailed step-by-step instructions for all routine maintenance tasks.

Repair:

Minor and major repair procedures for all vehicle systems.

Troubleshooting:

Extensive troubleshooting guides for common and uncommon issues.

Rebuilding:

Procedures for rebuilding major components like transmissions and engines.

Component Replacement:

Instructions for replacing all major and minor vehicle components.

Wiring Schematics:

High-quality, detailed wiring diagrams for electrical system diagnostics.

Diagnostic Codes:

Listing and interpretation of on-board diagnostic trouble codes (DTCs).

Depth:

Comprehensive, covering everything from basic fluid changes to complete drivetrain and engine rebuilds.

Illustrations:

Includes detailed illustrations to guide repair and maintenance procedures.

Searchability:

Fully searchable PDF content with bookmarks for easy navigation.

📊 Manual Specifications

Format:

PDF

Software Requirements:

No installation required, viewable with standard PDF reader.

Portability:

Single PDF file for easy transfer and access.

Quality:

High-resolution scans for clear text and diagrams.

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type 1:

6.5L (396 cu in) Turbocharged V8 Diesel (L65)

Engine Displacement 1:

6.5 Liters (396 cubic inches)

Bore X Stroke 1:

4.06 in x 3.82 in (103.2 mm x 97.0 mm)

Compression Ratio 1:

20.2:1

Horsepower 1:

190 hp @ 3400 rpm

Torque 1:

430 lb-ft @ 1800 rpm

Fuel Injection 1:

Direct Injection with Bosch VE Injection Pump

Engine Type 2:

6.2L (379 cu in) V8 Diesel (Naturally Aspirated - Earlier Models/Variants)

Engine Displacement 2:

6.2 Liters (379 cubic inches)

Horsepower 2:

150 hp @ 3600 rpm

Torque 2:

310 lb-ft @ 2000 rpm

Cooling Capacity:

Approx. 20 quarts (18.9 liters) (Check manual for exact capacity)

Oil Capacity:

Approx. 10 quarts (9.5 liters) with filter (Check manual for exact capacity)

Engine Oil Spec:

API Service CG-4 or CH-4 (Diesel Engine Oil), SAE 15W-40 recommended (Refer to manual for specific viscosity based on temperature).

🔧 Transmission

Transmission Type:

4-Speed Automatic (4L80-E)

Transmission Manufacturer:

General Motors (GM)

Transfer Case:

Permanent 4-Wheel Drive with Central Differential Lock (CDL) and Electronic Vacuum Modulator (EVM) for front hub engagement.

Transmission Fluid Capacity:

Approx. 12.5 quarts (11.8 liters) (Check manual for exact capacity)

Transmission Fluid Spec:

Dexron III Automatic Transmission Fluid (ATF)

📐 Dimensions

Length:

Approx. 185.7 inches (4717 mm) (Varies slightly by body style)

Width:

Approx. 87.3 inches (2218 mm)

Height:

Approx. 75.5 inches (1918 mm) (Varies slightly by body style)

Wheelbase:

Approx. 130 inches (3302 mm)

Ground Clearance:

Approx. 16 inches (406 mm)

Curb Weight:

Approx. 7,000 lbs (3175 kg) (Varies by configuration)

Gross Vehicle Weight Rating:

Approx. 10,200 lbs (4627 kg)

Towing Capacity:

Approx. 6,000 lbs (2721 kg) (Check specific vehicle limitations)

Payload Capacity:

Approx. 1,500 - 2,000 lbs (680 - 907 kg) (Varies by configuration)

🛡️ Safety Features

Crash Test Data:

As a military-derived vehicle, formal civilian crash test ratings (like NHTSA/IIHS) are not directly comparable or always available. The H1's construction emphasizes extreme durability and occupant protection through its robust chassis and body structure.

Braking System:

Four-wheel disc brakes with ventilated rotors. ABS was optional or standard depending on the specific 1995 configuration.

Seat Belts:

Three-point seat belts for front occupants, lap belts for rear (configuration dependent).

Chassis Construction:

Heavy-duty, body-on-frame construction with reinforced chassis for maximum impact resistance.

💡 Technology Features

Infotainment System:

Basic analog instrumentation. Infotainment systems were not a primary focus; often aftermarket units were installed by owners.

Traction Control:

Limited driver assistance systems by modern standards. Focus was on mechanical traction aids like differential locks.

Connectivity Features:

No factory-integrated connectivity features (e.g., Bluetooth, USB) as this was before widespread adoption.

🔧 Maintenance

Oil Change Interval:

Every 3,000 - 5,000 miles or 6 months, whichever comes first (for diesel engines, consult manual for precise recommendation).

Transmission Fluid Service:

Every 30,000 - 60,000 miles or 2-3 years, depending on usage (refer to manual).

Coolant Flush:

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

Air Filter Replacement:

Every 15,000 - 30,000 miles or annually, depending on operating conditions.

Coolant Spec:

Heavy-duty diesel engine coolant (DCA4 or equivalent) or a 50/50 mix of ethylene glycol and distilled water. Consult manual for specific type and concentration.

Brake Fluid Spec:

DOT 3 or DOT 4 Hydraulic Brake Fluid.

Power Steering Fluid Spec:

Dexron III ATF or specified power steering fluid.

Glow Plugs:

Glow plug system reliability can be a concern; proper diagnostic and replacement are crucial for cold starts.

Cooling System Leaks:

Potential for leaks in hoses and the radiator due to the robust operating environment; regular inspection is key.

ABS Sensors:

ABS sensor failures can occur, impacting braking performance (if equipped).

Durability Maintenance:

While extremely durable, the H1 requires diligent maintenance due to its heavy-duty nature and off-road use. Overlooking scheduled maintenance can lead to accelerated wear.

📚 Vehicle History

Am General History:

AM General has a long history of producing military vehicles, including the High Mobility Multipurpose Wheeled Vehicle (HMMWV), commonly known as the Humvee. The H1 is the civilian version derived from this military platform.

Hmmwv To Hummer:

The civilian HUMMER H1 was introduced in 1992, leveraging the established durability and off-road capabilities of the HMMWV.

1995 Updates:

The 1995 model year saw the widespread adoption of the 6.5L turbocharged diesel engine (L65) as the primary powertrain, offering improved performance and efficiency over earlier 6.2L naturally aspirated engines. Refinements to the drivetrain and interior features also occurred.

Manufacturing Location:

Mishawaka, Indiana, USA

🏆 Awards & Recognition

Off Road Awards:

While not typically receiving formal 'awards' in consumer publications, the HUMMER H1 (and its HMMWV predecessor) is globally recognized for its unparalleled off-road capability and durability in extreme conditions.

Military Service:

The HMMWV platform upon which the H1 is based has served with distinction in numerous military conflicts worldwide, attesting to its robust design and reliability.

Certification Standard:

Built to meet or exceed military specifications for ruggedness and all-terrain performance.