Ok Hauling car to shop last week to start mods I made a huge mistake. I put the key on car trailer and drove to shop:crying:. Needless to say i only had one key and after hours of looking on side of road I found it. Only problem is that it had been run over:banghead:. car still recognized signal and will start but FOB is broken into to pieces. How do i know what remote to order as far as serial number and do i have to carry it to cadillac to program or will the car recognize the new key and i just add it o program. Thanks