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
Electrical Component Locator: Motors
MOTORS LOCATION
| Component | Location |
|---|---|
| Air Temperature Actuator (Left) | Attached to lower middle underside of HVAC assembly, below evaporator. See Figure . |
| Air Temperature Actuator (Right) | At middle top of HVAC assembly, above evaporator. See Figure . |
| Blower Motor | At right lower side of dash, on HVAC assembly. |
| Fuel Pump & Sender Assembly | In fuel tank. See Figure . |
| Mode Actuator | On left side of HVAC assembly. See Figure . |
| Recirculation Actuator | On top front of HVAC assembly. See Figure . |
| Throttle Actuator Control Assembly | Mounted to throttle body assembly, on top of engine. |
| Throttle Actuator Control Motor | Mounted to throttle body assembly, on top of engine. |
| Windshield Washer Fluid Pump (Reversible) | In washer fluid reservoir. |
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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