Astro Van L AWD V6-4.3L VIN W (1996)
Vehicle Control Module: Service and Repair
Vehicle Control Module (VCM) Replacement
VCM
The service of the VCM consists of replacing the VCM. If the diagnostics call for replacement of the VCM, transfer the KS Calibration PROM and
program the EEPROM in the VCM. Refer to EEPROM Programming.
KS Calibration PROM
NOTICE: In order to prevent possible Electrostatic Discharge damage to the VCM, do not touch the connector pins or soldered components on the
circuit board.
IMPORTANT: In order to prevent the internal VCM damage, the ignition must be OFF when disconnecting or reconnecting or reconnecting the power
to the VCM (battery cable, ECM fuse, jumper cables, etc.).
REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
2. Remove the connectors from the VCM.
3. Remove the mounting hardware. Remove the VCM from the engine compartment.
4. Remove the VCM access cover.
