Dont know if youve solved this one yet? I have a 1996 Vauxhall Omega which is basically the same car but for the UK market. In the manual with the car it says you can reprogramme the remote by first checking the battery is ok, which if ok should flash the red light over the doors close/lock button when you press it. Then from inside the car turn the ignition key so the ignition lights come on. This then gives you 30 seconds to press the door lock button, I assume this may lock the doors but should also sort out your remote. If not my other solution is to contact a main dealer for advice
