Hummer H2 2003 Owner's Manual

1. Introduction

This manual provides detailed information regarding the operation, maintenance, and safety features of your 2003 Hummer H2. Familiarizing yourself with this information will ensure safe and efficient use of your vehicle. Please read this manual thoroughly before operating the vehicle.

Image: Front cover of the 2003 Hummer H2 Owner's Manual. This image displays the official manual for the vehicle, indicating its purpose as a guide for owners.

2. Setup and Initial Familiarization

Before your first drive, it is important to perform initial checks and familiarize yourself with the vehicle's controls.

2.1 Pre-Drive Checks

• Tire Pressure: Verify all tires are inflated to the recommended pressure levels as indicated on the driver's side door jamb placard.
• Fluid Levels: Check engine oil, coolant, brake fluid, and windshield washer fluid levels. Refer to the 'Maintenance' section for detailed instructions.
• Lighting: Ensure all exterior and interior lights are functioning correctly.
• Brakes: Test brake pedal feel and ensure no unusual noises or excessive travel.

2.2 Adjusting Seating and Mirrors

Proper adjustment of the driver's seat, steering wheel, and mirrors is crucial for comfort and visibility. Adjust the seat for optimal pedal access and steering wheel reach. Adjust the rearview and side mirrors to provide a clear view of the areas around the vehicle.

3. Operating Your Hummer H2

This section covers the basic operation of your vehicle, including starting, driving, and using various features.

3.1 Starting the Engine

1. Ensure the transmission is in Park (P) or Neutral (N).
2. Insert the key into the ignition and turn it to the 'START' position.
3. Release the key once the engine starts.

3.2 Driving Modes and Controls

The Hummer H2 features various driving modes and controls for different terrains. The transfer case control allows selection between 2HI, 4HI, 4LO, and Neutral. Consult the dashboard indicators for the currently engaged mode.

• 2HI (Two-Wheel Drive High): For normal road driving.
• 4HI (Four-Wheel Drive High): For slippery conditions or light off-road use.
• 4LO (Four-Wheel Drive Low): For severe off-road conditions requiring maximum torque.

3.3 Climate Control System

The automatic climate control system allows you to set and maintain a desired cabin temperature. Use the 'AUTO' button for automatic operation or manually adjust fan speed, temperature, and air distribution.

4. Maintenance

Regular maintenance is essential for the longevity and performance of your Hummer H2. Adhere to the recommended service schedule.

4.1 Service Schedule

Refer to the separate 'Maintenance Schedule' booklet for detailed service intervals based on mileage and time. Key items include:

• Engine Oil and Filter: Change every 3,000-5,000 miles or as indicated by the oil life monitoring system.
• Tire Rotation: Every 5,000-7,500 miles to ensure even wear.
• Air Filter: Inspect annually or every 15,000 miles, replace as needed.
• Brake System: Inspect pads, rotors, and fluid levels at every service interval.

4.2 Fluid Specifications

5. Troubleshooting

This section addresses common issues you might encounter and provides basic troubleshooting steps.

5.1 Engine Will Not Start

• Battery: Check battery terminals for corrosion and ensure they are tight. If the battery is dead, jump-start the vehicle according to the instructions in this manual.
• Fuel: Ensure there is sufficient fuel in the tank.
• Ignition: Confirm the key is fully inserted and turned correctly.

5.2 Warning Lights Illuminated

If a warning light illuminates on the dashboard, consult the 'Instrument Panel' section of this manual for specific details on what each light indicates and the recommended action. Do not ignore warning lights.

5.3 Flat Tire

If you experience a flat tire, safely pull over to a level surface away from traffic. Refer to the 'Tire Changing' section for instructions on how to use the spare tire and jack.

6. Specifications

Key technical specifications for the 2003 Hummer H2.

• Engine: 6.0L V8 Vortec
• Horsepower: 316 hp @ 5200 rpm
• Torque: 360 lb-ft @ 4000 rpm
• Transmission: 4-speed automatic
• Fuel Tank Capacity: 32 gallons (approx.)
• Towing Capacity: Up to 6,500 lbs (depending on configuration)
• Curb Weight: Approximately 6,400 lbs

7. Warranty and Support

Your 2003 Hummer H2 is covered by a limited warranty. For specific terms, conditions, and duration, please refer to the separate 'Warranty Information' booklet provided with your vehicle.

7.1 Customer Support

For further assistance, service appointments, or to order genuine Hummer parts, please contact your authorized Hummer dealership. You can find a dealer near you by visiting the official Hummer website or by calling the customer service hotline listed in your warranty booklet.

Note: Always use genuine Hummer parts and accessories for optimal performance and to maintain warranty validity.