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.
2007 Hummer H3 AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Electrical Component Views
| Callout | Component Name |
|---|---|
| 1 | Negative Battery Cable |
| 2 | Battery |
| 3 | Positive Battery Cable |
| 4 | Generator |
| 5 | Engine-LRR |
| 6 | G120 |
| 7 | G100 |
| 8 | C130 (UE1) |
| 9 | Generator Control Module |
| Callout | Component Name |
|---|---|
| 1 | Battery Positive Cable |
| 2 | Starter Solenoid |
| 3 | Starter Motor |
| 4 | G100 |
| 5 | OnStar Fuse |
| 6 | Battery |
| 7 | Generator Connector |
| 8 | Generator |
| Callout | Component Name |
|---|---|
| 1 | Ignition Switch |
| 2 | Clutch Pedal (MA5) |
| 3 | Clutch Release Switch (MA5) |
| 4 | Clutch Start Switch (MA5) |
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.