Malibu L4-144 2.4L DOHC VIN T SFI (1998)
Removal Procedure
Important: Turn the ignition switch OFF to prevent internal PCM damage when disconnecting or reconnecting power to the PCM (for example, battery
cable, PCM pigtail, PCM fuse, jumper cables, etc.). The ignition switch should be OFF for at least 10 seconds before disconnecting power to the PCM
so the IAC valve has time to move to the engine OFF position.
1. Disconnect the negative battery cable.
Caution: Refer to Battery Disconnect Caution in Service Precautions.
2. Remove the LH hush panel.
3. Loosen the PCM electrical connectors screws (1).
NOTICE: Do not touch the PCM connector pins or soldered components on the circuit board in order to prevent possible Electrostatic Discharge (ESD)
damage. Do not remove the integrated circuit boards from the carrier.
4. Disconnect the PCM electrical connectors.
5. Remove the PCM Retainer.
6. Slide the PCM from the PCM bracket.
INSTALLATION PROCEDURE
Remove the new PCM from its packaging and check the service number to make sure it is the same number or updated number as the malfunctioning
PCM.
1. Slide the PCM into the PCM bracket.
2. Install the PCM Retainer.
NOTICE: Do not touch the PCM connector pins or soldered components on the circuit board in order to prevent possible electrostatic discharge (ESD)
damage. Do not remove the integrated circuit boards from the carrier.
3. Install the PCM electrical connectors.
4. Tighten the PCM connector screws (1).
5. Install the LH hush panel.
6. Connect the negative battery cable.
7. Reprogram the PCM and perform the Crankshaft Position System Variation Learning Procedure.