Hi and thanks for using 2CarPros.
This vehicle is not offered in the US, but I know it was manufactured by Holden (GM) in Australia in 2004. Based on that, I am going to do my best at helping. Here is the relearn process for key-less entry issues, such as you are experiencing. These are based on the Pontiac G8 (2004) which is basically the same vehicle as you have.
In order to correct a key fob that is out-of-sequence, follow these steps:
1. While seated in the vehicle, press and hold the unlock button on the key fob.
2. While still pressing the unlock key on the fob, insert the ignition key into the ignition switch and turn the key to the ON position.
3. Once the Driver Information Center (DIC) cycles, release the unlock button.
4. Turn the key to the OFF position and remove the key.
The key fob should now operate both doors and security.
Let me know if this helps.
Sunday, March 3rd, 2019 AT 8:04 PM