[johndjmix1]

Onstar is disabled by just pulling 1 fuse. Swap the wires with a different fuse position so if a theif pulls it the onstar stays on! Still they would see the green light by the onstar buttons, but it may stump them. I have a foolproof way I have protected cars, always works.....theif ALWAYS gives up. Think fueses.....

Its not so much making the car stealproof, its making the car not start and only you know what the cause is. There are many ways to do this.

--John