For 1990-2009 cars

### 10-Minute Vehicle Key Relearn

Note: This procedure will only relearn the vehicle keys. This procedure will not learn the immobilizer pre-release password or the challenge/response data. Do not use this procedure as a substitute for a 10-minute relearn when replacing or reprogramming a body control module (BCM) or engine control module (ECM). Doing so will result in an inoperativ to learn the pre-release password and/or the challenge/response data.

This 10-minute learn procedure should be used when all vehicle keys are desired to be replaced or reprogrammed. This procedure will erase all previously learned vehicle keys from the BCM. Once the 10-minute relearn procedure has been completed, any remaining vehicle keys may be programmed using the Adding Keys procedure to ensure their continued functionality.

1. Connect a scan tool to the vehicle.
2. Turn ON the ignition, with the engine OFF.
3. Ensure that all power consuming devices are turned OFF on the vehicle.
4. On the scan tool, select Service Programming System and follow the on-screen instructions. Ensure the correct programming selection is chosen based on component being replaced or programmed. For this procedure, go to the BCM Configuration/Reset Functions menu and choose the Configure New Module or Remove/Reset Module selection.
5. At this point the scan tool must remain connected for the duration of the 10-minute relearn procedure.

Note:

• | The scan tool will initially display 12 Minutes. The first 2 minutes allow the scan tool to initialize the appropriate control module. The remaining 10 minutes is the relearn timer.

• | On some vehicles the security indicator may be illuminated for the duration of the 10 minute relearn procedure.

6. Observe the scan tool, after approximately 10 minutes the scan tool will display "Programming Successful, Turn OFF Ignition". The vehicle is now ready to relearn the key information and/or the passwords on the next ignition switch transition from OFF to CRANK.
7. Turn OFF the ignition and wait 2 minutes.
8. With a master vehicle key, turn the ignition to the RUN position for 15 seconds, then start the vehicle. The BCM has now learned the key transponder information.
9. If additional keys are required to be learned, refer to Adding Keys.
10. With a scan tool, clear any DTCs.