Service of the powertrain control module (PCM) should normally consist of replacement of the PCM.

If the diagnostic procedures calls for replacing the PCM, perform the following procedures in the following order:

1. Programming the PCM
2. Passlock Learn Procedure
3. Programming the top dead center (TDC) offset

Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

1. Remove the negative battery cables.
2. Remove the PCM from the passenger compartment behind the glove box.
3. Remove the connectors from the PCM.

Important: To prevent possible electrostatic discharge to the PCM, do not touch the component leads, and do not remove the integrated circuit from the carrier.

4. Remove the PCM mounting hardware.

1. Install the PCM mounting hardware.
2. Install the connectors to the PCM.
3. Install the PCM in the passenger compartment behind glove box.
4. Install the negative battery cables.

The malfunction indicator lamp (MIL), antilock and brake lamps will continue to be enabled until the PCM is programmed. Once the programming is complete, the lamps will turn OFF and normal operation will occur.

5. Refer to Powertrain Control Module Programming .