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Home >> Chevrolet >> 2000 >> C 1500 Truck 2WD V6-4.3L VIN W >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Service and Repair >> VCM Programming
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VCM Programming

IMPORTANT: Do not attempt to start the engine until the VCM has been programmed. False Diagnostic Trouble Codes (DTCs) may be set.

1. Take the following steps in order to setup for programming the VCM electrically Erasable Programmable Read Only Memory (EEPROM).
^ The battery is fully charged.
^ The ignition is ON.
^ The Data Link Connector (DLC) is secure.
2. Refer to an updated Techline terminal and follow the user instructions for VCM programming.
3. If the VCM fails to program, do the following functions:
^ Check all the VCM connections.
^ Check the ITCS terminal and equipment for the latest software version.
^ Try again to program the VCM. If the programming fails again, replace the VCM.

IMPORTANT: This step is not necessary if a NEW unused service VCM is being installed.

4. Perform the Passlock Reprogramming procedure. Refer to PASSLOCK Reprogramming Auto Learn.
5. Perform the CKP System Variation Learn Procedure. Refer to CKP System Variation Learn Procedure.
6. For a functional check, perform the Powertrain On-Board Diagnostic (OBD) System Check.
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