Changing the Passlock(TM) Components
The following components contain codes or passwords, or must learn codes or passwords for the Passlock(TM) system to allow the vehicle to start:^ The ignition lock cylinder case
^ The theft deterrent control module (Passlock(TM) Module)
^ The Powertrain Control Module (PCM)
If any of these parts are replaced, a learn procedure must be performed. Refer to. If parts are replaced and a learn procedure is not performed, the engine will crank and will not run or will start and stall immediately.