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Removal Procedure
- Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.
- Loosen the PCM harness connector bolts (4) from the center of the PCM harness connectors.
Courtesy of GENERAL MOTORS CORP.
NOTE:
In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector.
- Remove the PCM harness connectors (2) from the PCM (1).
- Remove the PCM retaining bolts (3) and nuts (6).
NOTE:
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.
- Slide the PCM (1) away from the intake manifold past the mounting studs (5) and remove PCM from the vehicle.
- Remove the PCM mounting studs (5) from the intake manifold only if replacing the studs.