🏷️ Basic Information

Make:

HUMMER

Model:

H2

Year:

Not Specified, but generally covers 2003-2009 model years

Engine Code Primary:

6.0L V8 PETROL FI

👋 Introduction

Positioning:

The HUMMER H2 occupied a niche segment as a large, rugged, and luxurious SUV, often associated with off-road capability and a commanding presence. This manual targets owners and independent repair facilities seeking in-depth knowledge for maintenance and repair.

Competitors:

Competed with other large, premium SUVs such as the Cadillac Escalade, Lincoln Navigator, and Land Rover Range Rover, though the H2 emphasized a more extreme, utilitarian aesthetic and off-road prowess.

Manual Features:

Comprehensive coverage of all major vehicle systems, detailed repair procedures, high-quality diagrams, diagnostic troubleshooting, owner's manual information, and electronic format for easy access and storage.

Audience:

Professional mechanics, DIY enthusiasts, automotive technicians, and HUMMER H2 owners seeking detailed technical information for maintenance, repair, and troubleshooting.

📋 Manual Details

Systems Covered:

Engine Mechanical, Engine Control, Cooling System, Engine Electrical, Exhaust & Emission, Fuel System, Intake System, Lubrication, Body Repair, Audio/Phone, Electronics, Entertainment, Navigation, Security & Keyless Entry, Sunroof (Convertibles), Brake System, Differential, Propeller Shaft, Axle, Transfer Case, Wheel Drive Shaft, Electrical, HVAC, Restraint & Seatbelt, Steering Wheel & Column, Power Steering & Assist, Suspension, Automatic Transmission, Wheels & Tires, Wiring Diagrams, Owners Manual

Pages:

More than 2500 pages

Type:

Workshop Repair Service Manual + Owners Manual

Language:

English

Digital Format:

PDF

📖 Manual Coverage

Powertrain:

Engine Mechanical, Engine Control, Cooling System, Engine Electrical, Exhaust & Emission, Fuel System, Intake System, Lubrication, Automatic Transmission, Differential, Propeller Shaft, Axle, Transfer Case, Wheel Drive Shaft

Chassis:

Brake System, Suspension, Steering Wheel & Column, Power Steering & Assist, Wheels & Tires

Electrical Electronics:

Engine Electrical, Electrical, Audio/Phone, Electronics, Entertainment, Navigation, Security & Keyless Entry, Restraint & Seatbelt, Wiring Diagrams

Body:

Body Repair, Sunroof (Convertibles)

Comfort Convenience:

HVAC, Audio/Phone, Entertainment, Navigation, Security & Keyless Entry, Sunroof (Convertibles)

Drivetrain:

Front and Rear Axles, Differential (front and rear), Transfer Case, Driveshafts, CV Joints, Wheel Hubs, Wheel Bearings.

Steering Suspension:

Steering Gear, Power Steering Pump, Steering Column, Ball Joints, Tie Rods, Control Arms, Torsion Bars, Shock Absorbers, Leaf Springs (rear), Bushings.

Braking System:

Front and Rear Brakes (Discs), ABS Module, Brake Lines, Master Cylinder, Calipers, Parking Brake System.

Exhaust Emissions:

Exhaust Manifolds, Catalytic Converters, Mufflers, Oxygen Sensors, EGR System (if applicable), Emission Control Systems.

Fuel System:

Fuel Tank, Fuel Pump, Fuel Filter, Fuel Lines, Fuel Injectors, Fuel Pressure Regulator.

Repair Procedures:

Engine overhaul, transmission repair, brake system diagnostics and repair, suspension component replacement, electrical system troubleshooting, body panel repair, HVAC system servicing, driveline component service.

Maintenance Procedures:

Scheduled maintenance, fluid level checks and changes, filter replacements, lubrication points, inspection routines.

Diagnostic Procedures:

Troubleshooting guides, fault code interpretation, diagnostic flowcharts for various systems.

Diagnostic Troubleshooting:

Detailed troubleshooting flowcharts and procedures for engine performance, transmission operation, brake systems, HVAC, electrical systems, and chassis components.

Torque Specifications:

Includes detailed torque specifications for critical fasteners across all major systems (engine, transmission, suspension, wheels, etc.).

Wiring Diagrams:

Comprehensive color wiring diagrams for all electrical systems, including engine control, body control modules, lighting, audio, HVAC, and safety systems.

Depth:

Comprehensive. Covers from basic maintenance to complex engine and transmission rebuilds, including detailed diagnostic procedures and wiring schematics.

System Diagnostics:

Includes procedures for diagnosing and repairing all electronic control modules (ECMs), sensors, actuators, and communication networks (e.g., CAN bus).

📊 Manual Specifications

Format Details:

PDF. Requires Adobe Acrobat Reader. File is provided in ZIP format requiring extraction.

Quality:

High Definition diagrams. Well-structured content with bookmarks for easy navigation. Ready to print.

Binding:

N/A (Digital Format)

Paper:

N/A (Digital Format)

Size:

125 MB

⚙️ Engine Specifications

Engine:

6.0L V8 Vortec (LQ4/LQ9 family)

Horsepower:

Approx. 325-337 hp (depending on specific model year and variant)

Torque:

Approx. 370-380 lb-ft (depending on specific model year and variant)

System:

Sequential Fuel Injection (SFI)

Type:

Naturally Aspirated, Overhead Valve (OHV), Cast Iron Block, Aluminum Heads

Valvetrain:

Overhead Valve (OHV), 2 valves per cylinder

Displacement Liters:

6.0

System Type:

Pressurized, liquid-cooled

🔧 Transmission

Transmission:

4-Speed Automatic (4L65-E)

Transmission Options:

N/A (4L65-E was standard)

Transmission Features:

Heavy-duty design, electronic control, manual shift mode (later models).

📐 Dimensions

Length:

Approx. 206.5 inches

Width:

Approx. 81.5 inches

Height:

Approx. 79.2 inches

Curb Weight:

Approx. 7,712 lbs

Gross Vehicle Weight Rating:

Approx. 8,600 lbs

Towing Capacity:

Up to 8,500 lbs (properly equipped)

🛡️ Safety Features

NHTSA Rollover Resistance:

4 out of 5 stars (though its high center of gravity requires cautious driving)

Active Safety:

Four-wheel disc brakes with ABS, StabiliTrak (GM's electronic stability control system), Traction Control System (TCS).

Passive Safety:

Front airbags, front side-impact airbags, available rear side-impact airbags, reinforced frame and body structure, seatbelt pretensioners.

💡 Technology Features

Infotainment System:

Premium audio systems (Bose), CD players, available navigation systems, and auxiliary input jacks. Later models offered improved infotainment options.

Driver Assistance Features:

StabiliTrak (Electronic Stability Control), Traction Control System (TCS), Anti-lock Braking System (ABS), rear parking assist (optional).

Connectivity Options:

OnStar telematics system (subscription-based) offering emergency assistance, vehicle diagnostics, and remote access.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000-7,500 miles or 6 months, whichever comes first, depending on driving conditions. Consult manual for specific recommendations.

Transmission Fluid Interval:

Recommended inspection at 50,000 miles, with fluid and filter change recommended every 100,000 miles or under severe service. Consult manual for specifics.

Engine Oil Spec:

SAE 5W-30 Synthetic Blend API SM or higher

Coolant Spec:

Dex-Cool (GM 6277M) Orange Long-Life Coolant

Transmission Fluid Spec:

Dexron-VI Automatic Transmission Fluid (ATF)

Brake Fluid Spec:

DOT 3

Transfer Case Fluid Spec:

Dexron-III ATF or equivalent (check manual for exact specification based on transfer case model)

Power Steering Fluid Spec:

GM Power Steering Fluid or Dexron-III ATF

Common Problems:

Fuel pump failure, power steering leaks, interior trim issues, exhaust manifold cracks, HVAC blower motor issues, transmission temperature sensor problems, ABS/Traction Control system faults.

Oil Filter Example:

ACDelco PF1218 or equivalent

Air Filter Example:

ACDelco A1793C or equivalent

📚 Vehicle History

Heritage:

HUMMER originated from AM General's High Mobility Multipurpose Wheeled Vehicle (HMMWV), commonly known as the Humvee. The H1 was the civilian version, and the H2 was developed by GM to be a more mainstream, though still distinctive, large SUV.

Evolution:

The HUMMER H2 was introduced for the 2003 model year and was produced until 2009. It was available as an SUV and a SUT (Sport Utility Truck). Key updates included minor powertrain enhancements and feature revisions throughout its production run.

Engine Upgrade Note:

A 6.2L V8 engine was introduced in later models (2008-2009), offering more power. This manual specifically covers the 6.0L V8.

Manufacturing Location:

Built at AM General's Mishawaka, Indiana plant.

🏆 Awards & Recognition

Recognitions:

While the H2 was known for its polarizing styling and capability, it did not typically win mainstream automotive awards. Its appeal was more experiential and lifestyle-oriented.