If its an Isuzu key kit you might try the dealer to see if they have a couple of keys laying around. There were only three or four different keys for the kits they sell at Isuzu. I've had three Troopers and two of them used the same key. When I lost the key to one I bought a new kit at Isuzu and planned to break the old locks, but the key from the new kit fit so I just left them on. At least they keep your wheels from falling off.