Very simple. All you need to do is, put the key in the barrel. Turn the key so the dash light/ignition turns on. Press the button on the fob. The car doors will lock.
Hey presto
Farhan, March 2009
Derek, you have to take your car back to vauxhall and they will re-programme the key for you, at a cost,!!!! you might find it cheaper to change the locks all together,!!