K 2500 Truck 4WD V8-454 7.4L VIN J SFI (1997)
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Engine Control Module: Service Precautions
Circuit Testing Tools
Do not use a test lamp in order to diagnose the Powertrain electrical systems unless specifically instructed by the diagnostic procedures. Use the
Connector Test Adapter Kit, J 35616 whenever diagnostic procedures call for probing any connectors.