How to Program a 2020 GMC Sierra Ignition Smart Chip Key Transponder

Step by Step How to Programming Instructions:

Follow these steps to program up to eight keys to the vehicle.

Programming with a Recognized Key:
1. Insert the original, already programmed key into the ignition and turn it to the ON/RUN position.
2. Turn the key to LOCK/OFF and remove it.
3. Insert the new key to be programmed and turn it to the ON/RUN position within five seconds. The security light will turn off once the key has been programmed.
4. Repeat Steps 1–3 if additional keys are to be programmed.

Programming without a Recognized Key:
Program a new key to the vehicle when a recognized key is not available. Canadian regulations require owners to see their dealer. If there are no currently recognized keys available, follow this procedure to program the first key. This procedure will take approximately 30 minutes to complete for the first key. The vehicle must be off, and all the keys you wish to program must be with you.
1. Insert the new vehicle key into the ignition.
2. Turn to ON/RUN. The security light will come on.
3. Wait 10 minutes until the security light turns off.
4. Turn the ignition to LOCK/OFF.
5. Repeat Steps 2–4 two more times. After the third time, turn to ON/RUN; the key is learned, and all previously known keys will no longer work with the vehicle. Remaining keys can be learned by following the procedure in “Programming with a Recognized Key.”