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
Computer/Integrating Systems Component Views
| Callout | Component Name |
|---|---|
| 1 | Body Control Module (BCM) |
| 2 | Body Control Module (BCM) C1 (Body Harness) |
| 3 | Body Control Module (BCM) C2 (I/P Harness) |
| 4 | C201 I/P Harness to Body Harness |
| Callout | Component Name |
|---|---|
| 1 | C203 I/P Harness to HVAC Module Harness |
| 2 | C205 I/P Harness to HVAC Module Harness |
| 3 | Body Control Module (BCM) Connector |
| 4 | C204 I/P Harness to Body Harness |
| 5 | Trailer Blunt-Cut Harness Wires |
| 6 | Data Link Connector (DLC) |
| 7 | C208 I/P Harness to Body Harness |
| 8 | C200 I/P Harness to Body Harness |
| 9 | C207 I/P Harness to Body Harness |
| 10 | C201 I/P Harness to Steering Column Harness |
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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