depending on what part you actually want to remove? the ignition switch unclips from the rear or the housing and to remove the lock barrel you drill a 4 mm hole in the correct spot insert the key and turn it, then stick a screw driver in the hole to release the latching pin and pull it out, Galaxy's dont have sheer bolts! the ignition switch houseing is a push fit job! to remove it you need to remove the steering wheel, clock spring etc from the steering column then drift it off