30-Minute Immobilizer Relearn
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
This 30-minute relearn procedure will relearn the fuel enable password between the body control module (BCM) and the engine control module/powertrain control module (ECM/PCM).
- With a master vehicle key, turn ON the ignition, with the engine OFF.
- Observe the security indicator. After approximately 10 minutes, the telltale will turn OFF.
- Turn OFF the ignition, and wait 5 seconds.
- Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
- With a master vehicle key, start the vehicle. The vehicle has now learned the ECM/PCM has now learned the fuel enable password.
- If additional keys are required to be learned, refer to Adding Keys (North America except Canada) or Adding Keys (Canada) .
- With a scan tool, clear any DTCs.
IMPORTANT:
The vehicle learns the fuel enable passwords on the ignition switch transition from OFF to RUN. You must turn the ignition OFF before attempting to start the vehicle.