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.
2004 Pontiac Sunfire AutomaticFACTORY OEM SERVICE PROCEDURE
Ignition Control Module (ICM) Connector End View
Ignition Control Module (ICM)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | PNK | 239 | Ignition 1 Voltage |
| B | WHT | 423 | IC Timing Control |
| C-D | - | - | Not Used |
| E | BLK/WHT | 451 | Ground |
| F | BRN/WHT | 633 | Camshaft Position Signal |
| G | ORN | 406 | IC Timing Control B |
| H-J | - | - | Not Used |
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.