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SKREEM PROGRAMMING


When a Powertrain Control Module (PCM) for a gasoline engine, or an Engine Control Module (ECM) for a diesel engine and the Sentry Key REmote Entry Module (SKREEM) (also known as the Wireless Control Module/WCM) 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/ECM.
2.Program the new SKREEM/WCM.
3.Replace all ignition keys and program them into the new SKREEM/WCM.

PROGRAMMING THE SKREEM


The SKIS Secret Key is an ID code that is unique to each SKREEM/WCM. This code is programmed and stored in the SKREEM/WCM, the PCM/ECM, and each ignition key transponder chip. When the PCM/ECM or SKREEM/WCM is replaced, it is necessary to program the Secret Key into the new module using a diagnostic scan tool. Follow the programming steps outlined in the diagnostic scan tool for PCM REPLACED , ECM REPLACED, WCM REPLACED, or GATEWAY REPLACED under MISCELLANEOUS FUNCTIONS for the WIRELESS CONTROL MODULE/WCM menu item as appropriate.
note Be certain to enter the correct country code for the SKREEM/WCM. If the incorrect country code is programmed into the SKREEM, it cannot be changed and the SKREEM must be replaced.
note In addition, the SKREEM/WCM must be configured for certain optional equipment in the vehicle, including Tire Pressure Monitor (TPM), Remote Keyless Entry (RKE) and Remote Start. Follow the programming steps outlined in the diagnostic scan tool under MISCELLANEOUS FUNCTIONS for the WCM/WIRELESS CONTROL MODULE menu item as appropriate.
note A replacement SKREEM/WCM is supplied with TPM enabled by default; therefore, if the vehicle is not equipped with TPM, the ElectroMechanical Instrument Cluster (EMIC) will incorrectly learn that the vehicle has TPM after the replacement SKREEM is installed. The TPM indicator in the EMIC will illuminate to show a TPM fault condition after TPM has been disabled in the SKREEM. The EMIC must unlearn TPM to correct this false TPM indication. Follow the programming steps outlined in the diagnostic scan tool for CLEAR LEARNED FEATURES under MISCELLANEOUS FUNCTIONS for the INSTRUMENT CLUSTER menu item as appropriate.
note If the PCM/ECM and the SKREEM/WCM are replaced at the same time, all vehicle ignition keys will need to be replaced and new keys programmed into the new SKREEM/WCM.
note Programming the PCM/ECM or SKREEM is done using a diagnostic scan tool and a PIN to enter secure access mode. If three attempts are made to enter secure access mode using an incorrect PIN, secure access mode will be locked out for one hour. To exit this lockout mode, turn the ignition to the RUN position for one hour then enter the correct PIN. Be certain that all accessories are turned OFF. Also monitor the battery state and connect a battery charger if necessary.

PROGRAMMING IGNITION KEYS TO THE SKREEM


Each ignition key transponder also has a unique ID code that is assigned at the time the key is manufactured. When a key is programmed into the SKREEM/WCM, the transponder ID code is learned by the module and the transponder acquires the unique Secret Key ID code from the SKREEM/WCM. To program ignition keys into the SKREEM/WCM, follow the programming steps outlined in the diagnostic scan tool for PROGRAM IGNITION KEYS OR KEY FOBS under MISCELLANEOUS FUNCTIONS for the WIRELESS CONTROL MODULE/WCM menu item.
note A maximum of eight keys can be learned to each SKREEM. Once a key is learned to a SKREEM, that key has acquired the Secret Key for that SKREEM and cannot be transferred to any other SKREEM or vehicle.
If ignition key programming is unsuccessful, the scan tool will display one of the following error messages: