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.
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HOMESERVICE MANUALSCHEVROLET1996G 30 VAN V8-5.7L VIN RREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMRELAYS AND MODULES - IGNITION SYSTEMIGNITION CONTROL MODULEDESCRIPTION AND OPERATION
1996 Chevrolet G 30 Van V8-5.7L VIN R
Ignition Control Module: Description and Operation
1996 Chevrolet G 30 Van V8-5.7L VIN RSECTION Description and Operation
Ignition Control Driver (ICD) Module And Ignition Coil:
The Ignition Coil Driver Module is mounted on a bracket next to the coil. The Vehicle Control Module (VCM) signals the Ignition Control Driver (ICD) to turn "ON" primary current to the ignition coil by pulling the Ignition Control (IC) line high (4 volts). The IC turns the primary current "ON" and "OFF" by applying and removing the ground to the primary winding at the appropriate time. This module is of 'minimum function" and does not contain backup calibrations that would allow the engine to continue to rim if the IC signal is lost.
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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.