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
Component Locations
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 GMC C3500 HD, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| AIR BAG warning light | Instrument Panel Cluster (IPC) |
| Driver-side air bag module | On steering wheel |
| Electronic Frontal Sensor (EFS) | Lower radiator support |
| Front end discriminating sensor | Lower radiator support |
| Knee bolsters | Driver-side & passenger-side lower instrument panel |
| Passenger-side air bag disable switch | Center of instrument panel |
| Passenger-side air bag module | Passenger-side of instrument panel |
| Sensing & Diagnostic Module (SDM) | Under driver seat |
| SIR coil assembly | Under steering wheel |
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.