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Home >> Chevrolet >> 1999 >> Express 1 Ton Van V8-454 7.4L VIN J SFI >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Engine Control Module >> Service and Repair >> VCM Programming

VCM Programming

1. Take the following steps in order to set-up for the VCM (EEPROM) Programming.
^ The battery is fully charged.
^ The ignition is ON.
^ The Data Link Connector (DLC) is secure.
2. Refer to up-to-date Techline terminal and equipment user's instructions.
3. For a functional check perform the Powertrain On-Board Diagnostic (OBD) System Check.
4. If the VCM fails to program, do the following functions:
^ Check all the VCM connections.
^ Check the Techline terminal and equipment for the latest software version.
^ Try again to program the VCM. If it fails again, replace the VCM.