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Pcm/SKREEM Programming: Notes

NOTE: Before replacing the Powertrain Control Module (PCM), be certain 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 component failures (i.e. relays and solenoids) and shorted circuits (i.e. pull-ups, drivers, and switched circuits). These failures are difficult to detect when a double fault has occurred and only one Diagnostic Trouble Code (DTC) has been set.

When a Powertrain Control Module (PCM) and the Sentry Key Remote Entry Module (SKREEM) on vehicles equipped with the Sentry Key Immobilizer System (SKIS) are replaced at the same time, perform the following steps in order: 

  1. Program the new PCM.
  2. Program the new SKREEM (also sometimes referred to as the Wireless Control Module or WCM).
  3. Replace all ignition keys and program them into the new SKREEM/WCM.
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