Powertrain Control Module (Pcm)

NOTE: If the PCM and the Sentry Key Remote Entry Module (SKREEM) are replaced at the same time, program the VIN into the PCM first. All vehicle keys will then need to be replaced and programmed to the new SKREEM.

Before replacing the PCM for a failed driver, control circuit or ground circuit, be sure to check the related component/circuit integrity for failures not detected due to a double fault in the circuit. Most PCM driver/control circuit failures are caused by internal failure to components (i.e.; 12-volt pull ups, driver and ground sensors). These failures are difficult to detect when a double fault has occurred and only one DTC has set.

The Sentry Key Remote Entry System (SKREES) Secret Key is an I.D. code that is unique to each SKREES. This code is programmed and stored in the SKREEM, engine controller and transponder chip (ignition key). When replacing the PCM it is necessary to program the secret key into the PCM.

NOTE: After replacing the PCM, you must reprogram the pinion factor.

Turn the ignition on (transmission in Park/Neutral).
Use the DRBIII(R) and select THEFT ALARM, SKREEM, then MISCELLANEOUS.
Select PCM REPLACED.
Enter secured access mode by entering the vehicle 4-digit PIN.

CAUTION: If 3 attempts are made to enter the secure access mode using an incorrect PIN, secured access mode will be locked out for one hour. To exit this lockout mode, turn the ignition switch to the Run position for one hour then enter the correct PIN. Ensure all accessories are turned off. Also monitor the battery state and connect a battery charger if necessary.

Press ENTER to transfer the secret key (the SKREEM will send the secret key to the PCM).