Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Hummer H2FACTORY OEM SERVICE PROCEDURE
Capacities - Approximate Fluid
Capacities - Approximate Fluid
| Application | Specification | |
|---|---|---|
| Metric | English | |
| Axles | ||
| Front Axle | 1.73 Liters | 1.83 Quarts |
| Rear Axle | 2.6 Liters | 2.75 Quarts |
| Engine Cooling System | ||
|
14.0 Liters | 14.8 Quarts |
| Engine Crankcase | ||
|
5.7 Liters | 6.0 Quarts |
| Fuel Tank | 121.1 Liters | 32.0 Gallons |
| Transmission | ||
|
4.7 Liters | 5.0 Quarts |
|
10.6 Liters | 11 Quarts |
| Transfer Case | ||
| Borg Warner 4484 | 1.4 Liters | 1.5 Quarts |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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