Powertrain Control Module Security Relearn Procedure
On some vehicles (Bonneville, Regal, Impala SS, Monte Carlo SS, and 2004+ Grand Prix) it will be necessary to perform this Security Relearn Procedure before the car can be started. No tools are required to complete this procedure and it can be accomplished 30 to 45 minutes after the
PCM is initially installed. You must complete the procedure without opening any of the vehicle doors or trunk. It's best to open the drivers window and reach inside the vehicle to complete the learn procedure.
For Bonneville, Regal, Impala, and Monte Carlo vehicles 1997-2004 and Cobalt, ION 2004-2006:
1. Set the parking brake to disable the daytime running lights system to avoid draining the vehicles battery.
2. Try to start the vehicle by turning the key to the START position (using a
3. Master Pass-Key key, not a Valet key). Allow the key to fall back into the ON position. DO NOT TURN THE KEY TO THE OFF POSITION.
4. Observe the SECURITY telltale on the dashboard or driver information center. After approximately ten minutes it should turn off for the first time.
5. Turn OFF the ignition and wait for ten seconds.
6. Try to start the vehicle by turning the key to the START position (using a Master Pass-Key key, not a Valet key). Allow the key to fall back into the ON position. DO NOT TURN THE KEY TO THE OFF POSITION.
7. Observe the SECURITY telltale on the dashboard or driver information center. After approximately ten minutes it should turn off for the first time.
8. Turn OFF the ignition and wait for ten seconds.
9.Try to start the vehicle by turning the key to the START position (using a Master Pass-Key key, not a Valet key). Allow the key to fall back into the ON position. DO NOT TURN THE KEY TO THE OFF POSITION.
10. Observe the SECURITY telltale on the dashboard or driver information center. After approximately ten minutes it should turn off for the first time.
Turn OFF the ignition and wait for ten seconds.
11. Start the vehicle.
For 2004 Grand Prix only:
1. Set the parking brake to disable the daytime running lights system to avoid draining the vehicles battery.
2. Try to start the vehicle by turning key to the START position (using a Master Pass-Key key, not a Valet key).
3. Observe the SECURITY telltale on the driver information center. Allow the key to fall back into the ON position. DO NOT TURN THE KEY TO THE OFF POSITION.
4. After no less than fifteen minutes turn OFF the ignition and wait for ten seconds.
5. Try to start the vehicle by turning key to the START position (using a Master Pass-Key key, not a Valet key).
6. Observe the SECURITY telltale on the driver information center. Allow the key to fall back into the ON position. DO NOT TURN THE KEY TO THE OFF POSITION.
7. After no less than fifteen minutes turn OFF the ignition and wait for ten seconds.
8. Try to start the vehicle by turning key to the START position (using a Master Pass-Key key, not a Valet key).
9. Observe the SECURITY telltale on the driver information center. Allow the key to fall back into the ON position. DO NOT TURN THE KEY TO THE OFF POSITION.
10. After no less than fifteen minutes turn OFF the ignition and wait for ten seconds.
11. Start the vehicle.
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