my 03 vectra codes as follows - press on button and 'AS' button together and hold until you hear a beep - then enter code using station preset buttons use button 1 for position 1 i.e. if first number is 4 press button 1 x 4 times / and carryon to button 2 etc.
Hope this helps
Ian
November 2009
Automatic Answer
We may have found other answers which could help you.