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.
2000 Chevrolet Venture V6-3.4L VIN EFACTORY OEM SERVICE PROCEDURE
Ignition Control Module: Description and Operation
The Ignition Control (IC) module performs the following functions:
^ Determines the correct ignition coil firing sequence, based on 7X pulses-This coil sequencing occurs at start-up. After the engine is running, the module determines the sequence, and continues triggering the ignition coils in proper sequence.
^ Sends the 3X crankshaft reference (fuel control) signal to the PCM-The PCM determines engine RPM from this signal. This signal is also used by the PCM to determine crankshaft speed for Ignition Control (IC) spark advance calculations.
The 3X reference signal sent to the PCM by the IC module is an on, off pulse occurring 3 times per crankshaft revolution.
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.
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