2000 Chevrolet Express 3/4 Ton Van V8-305 5.0L VIN M SFIFACTORY OEM SERVICE PROCEDURE

VCM Programming



1. Take the following steps in order to set-up for programming the VCM (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's 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.
4. Perform the Passlock Reprogramming Procedure.
5. Perform the CKP System Variation Learn Procedure.
6. For a functional check, perform the Powertrain On-Board Diagnostic (OBD) System Check.
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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