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.
Ignition Control Module (ICM) (L26)
2008 Pontiac Grand Prix BaseSECTION Ignition Control Module (ICM) (L26)
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
Ignition Control Module (ICM) (L26)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| A | 0.8 WH | 423 | IC Timing Control |
| B | 0.8 TN/BK | 424 | IC Timing Signal |
| C | 0.8 L-BU/BK | 647 | Medium Resolution Engine Speed Signal |
| D | 0.8 PU/WH | 430 | Low Resolution Engine Speed Signal |
| E | - | - | Not Used |
| F | 0.8 BK | 630 | Camshaft Position Signal |
| G | 0.8 YE | 573 | CKP Sensor 1 Signal |
| H | 0.8 L-BU/WH | 1800 | CKP Sensor 2 Signal |
| J | 0.8 BN/WH | 633 | CMP Sensor Signal |
| K | 0.8 BK/WH | 51 | Ground |
| L | 0.8 RD/BK | 453 | Low Reference |
| M | 0.8 BK/WH | 836 | Low Reference |
| N | 0.8 WH/BK | 644 | 12-Volt Reference |
| P | 0.8 PK | 239 | Ignition 1 Voltage |
Connector Part Information
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Terminal Part Information
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RENDER: 1.0x
NO RELATED
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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.