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.
2006 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| Audio Amplifier | Left rear of passenger compartment. See Figure . |
| Automatic Transmission Floor Shift Control | Beneath center console. |
| Body Control Module (BCM) | Behind right front kick panel. See Figure . |
| Digital Radio Receiver | Behind right side dash area. See Figure . |
| Electronic Brake Control Module (EBCM) | Left of master cylinder. See Figure . |
| Heated Seat Module - Driver | In driver seat bottom. |
| Heated Seat Module - Passenger | In passenger seat bottom. |
| HVAC Control Module | Beneath radio. See Figure . |
| Inflatable Restraint Passenger Presence System (PPS) Module | On underside of cushion. See Figure . |
| Inflatable Restraint Sensing And Diagnostic Module (SDM) | Beneath lower console. See Figure . |
| Powertrain Control Module (PCM) | At left front side of engine compartment. See Figure . |
| Transfer Case Shift Control Module | Behind glove box. See Figure . |
| Vehicle Communication Interface Module (VCIM) | Center of dash below HVAC control head. See Figure . |
| Window Wiper/Washer Module (Rear) | In endgate. See Figure . |
| Windshield Wiper/Washer Module | Center top of firewall. See Figure . |
Factory Service Tools
Use the Manual With the Right Hardware
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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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