I just recently started having problems with the car turning over and getting the "unknown driver" on the display. lights on the dash come on and the air turns on as well. The air shuts off when I attempt to start the car. I did some looking around the car after getting frustrated and I found that the rear fuse box motherboard/circuit board had a little chipped and broken part to it and I think it could be the whole issue. I wanted to originally figure out how to disable the security system in an attempt to remove the "unknown driver" problem. any ideas where i can either get a replacement board or fix this any other way? I have a '02 envoy slt.