Service of the powertrain control module (PCM) should normally consist of either replacement of the PCM or electrically erasable programmable read only memory (EEPROM) programming. If the diagnostic procedures call for the PCM to be replaced, the PCM should be inspected first to see if the correct part is being used. If the correct part is being used, remove the faulty PCM and install the new service PCM.

Important: To prevent internal PCM damage, the ignition must be OFF when disconnecting or reconnecting power to the PCM. For example, when working with a battery cable, PCM pigtail, PCM fuse, or jumper cables.

Important: Remove any debris from the PCM connector surfaces before servicing the PCM. Inspect the PCM module connector gaskets when diagnosing or replacing the PCM. Ensure that the gaskets are installed correctly. The gaskets prevent contaminant intrusion into the PCM.

Important: It is necessary to record the remaining engine oil life. If the replacement module is not programed with the remaining engine oil life, the engine oil life will default to 100%. If the replacement module is not programmed with the remaining engine oil life, the engine oil will need to be changed at 5000 km (3,000 mi) from the last engine oil change.

1. Using a scan tool, retrieve the percentage of remaining engine oil. Record the remaining engine oil life.




Notice: In order to prevent internal damage to the PCM, the ignition must be OFF when disconnecting or reconnecting the PCM connector.

2. Loosen the PCM harness connector retaining bolts (1) in the center of the PCM harness connectors.
3. Remove the PCM harness connectors (3) from the PCM (2).



4. Remove the PCM mounting nuts and bolts (3).

Notice: 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.

5. Remove the PCM (2) from the intake manifold.
6. Remove the PCM mounting studs (1) from the intake manifold, if necessary.

Notice: Refer to Fastener Notice in the Preface section.




1. Install the PCM mounting studs (1) to the intake manifold, if necessary.

Tighten
Tighten the studs to 6 N·m (53 lb in).

Install the PCM (2) to the intake manifold.

2. Install the PCM mounting nuts and bolts (3).

Tighten
Tighten the nuts and bolts to 10 N·m (89 lb in).




3. Install the PCM harness connectors (3) to the PCM (2).
4. Tighten the PCM harness connector retaining bolts (1).

Tighten
Tighten the bolts to 8 N·m (71 lb in).

5. If a new PCM is being installed, the PCM must be programmed. Refer to Powertrain Control Module Programming .