Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Programming The WCM
The SKIS Secret Key is an ID code that is unique to each WCM. This code is programmed and stored in the WCM, the PCM/ECM, and each ignition key transponder chip. When the PCM/ECM or 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 REPLACEDÂ , ECM REPLACEDÂ , WCM REPLACEDÂ , or GATEWAY REPLACEDÂ under MISCELLANEOUS FUNCTIONSÂ for the WIRELESS CONTROL MODULE/WCMÂ menu item as appropriate.
Programming the PCM/ECM or WCM 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.
Read all notes and cautions for programming procedures.
- Connect a battery charger to the vehicle.
- Connect the scan tool.CAUTION:
If the ECM/PCM and SKREEM/WCM are replaced at the same time, the ECM/PCM MUST be programmed before the SKREEM/WCM.
- Select "ECU View".
- Select "WCM Wireless Control Module".
- Select "Miscellaneous Functions".
- Select WCM replaced.
- Enter the PIN when prompted.
- Verify the correct information.
If the PCM/ECM and the WCM are replaced at the same time, all vehicle keys will need to be replaced and programmed to the new WCM.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.