In June, my STS broke down at my cottage and was towed to an American car specialist (I live in Finland, no Cadillac dealers anymore)
Finally, I got the car back. It was the stupid electric steering column lock, which I found lying around at my dealership.
Now, though, the map is completely...
Hey! So yeah, this will be a quick walkthrough, and may be a little overly technical for some, so I'll try to make it simple.
The basics are using Linux and a 'HackRF One' wireless transmitter to spoof the car into thinking it's a previous year, before our car's GPS-Y2K.