2003 - 2007 Cadillac CTS/STS Transponder Key - PK3+ - B112PT

These programming procedures are only good for USA built vehicles.

The first digit of your 17 digit VIN number must start with the number 1 or 4.
If your VIN number starts with a 2 or 3 or a letter these procedures WILL NOT WORK.

Can I program a new key myself if I have no working keys?
  
    Yes, once you have had the new key cut by a Locksmith or other qualified persons use the following instructions.

1.  Insert a new cut key in ignition and turn key to the ON position for 10 minutes and 30 seconds.

2.  Within 45 seconds turn the key to OFF and then back to the ON position for 10 minutes and 30 seconds.

3. Within 45 seconds turn the key to OFF and then back to the ON position for 10 minutes and 30 seconds.

4.  Turn key OFF then back ON. The key is now programmed. Start vehicle to test key.

Can I program a duplicate key for this vehicle?

   Yes, once you have had the new key cut by a Locksmith or other qualified persons use the following instructions.

1. Insert an existing programmed working key into the ignition cylinder.    

2. Turn ignition to the ON position for 5 seconds, then back to OFF position.

3. Remove the existing key and within 5 seconds insert new key and turn it to the ON position for 5 seconds.

4. Turn key OFF then back to ON. The key is now programmed. Start vehicle to test key.