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.
2005 Chevrolet Uplander LSFACTORY OEM SERVICE PROCEDURE
Ignition Control Module (ICM)
Engine Controls Connector End Views
Connector Part Information
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Terminal Part Information
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Ignition Control Module (ICM)
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| A | OG/WH | 2122 | IC 2 Control |
| B | PU | 2121 | IC 1 Control |
| C | L-BU | 2123 | IC 3 Control |
| D | YE | 2174 | Low Reference |
| E | BK/WH | 51 | Ground |
| F | PK | 239 | Ignition 1 Voltage |
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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