Firebird V8-5.7L VIN G (2001)
Powertrain Control Module: Service and Repair
Powertrain Control Module (PCM) Replacement
Powertrain control module (PCM) service should normally consist of either PCM replacement or EEPROM programming. If the diagnostic procedures
require PCM replacement, check the PCM first to see if the correct part is being used.
IMPORTANT:
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In order to prevent internal PCM damage, the ignition must be OFF when you disconnect or reconnect the power to the PCM. For example,
disconnect the power when you work with the following components:
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A battery cable The PCM pigtail
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The PCM fuse
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Jumper cables
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When you diagnose or replace the PCM, remove any debris from the PCM connector surfaces before servicing the PCM module connector
gaskets. Ensure that the gaskets are installed correctly. The gaskets prevent contamination intrusion into the PCM.
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The replacement PCM MUST be programmed.
REMOVAL PROCEDURE
1. Disconnect the negative battery cable.
NOTE:
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Do not touch the connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD) damage to
the PCM.
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In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector.
2. Disconnect the PCM connectors.
3. Remove the mounting fasteners from the PCM bracket.
