I have a Commodore VT and 6 months ago the battery died. When I tried the radio code written in the logbook it didn't work. I have found that at some point prior to me owning it, the radio was changed. The serial no is 318005992.1. and the model no is 92056-088 - Eurovox. It is driving me insane without the radio. If I hit 1111 I get it for 3 mins only then have to do it again, making long drives rather annoying!! Please help anyone????