Switch on ignition, switch off the radio button, press and hold the AS button (on front of radio)then switch on the radio. the display should show "code"after 3 seconds it shows 10----
You will then need to enter the radio code found on the radio passport supplied with the car, if this is not available you will need to contact your Vauxhall garage or a car radio installer.
Randal27@talktalk.net, January 2007