So a friend of mine said he found the source code for Ford and Chevy's OS, and he said he could probably mess with a car by changing it, then implementing it in the car. No search engine or torrent site has come up to anything he was talking about. Is this possible, and if so, where can I get these source codes?
This was possible to do to jeeps for awhile, but most cars with discovered vulnerabilities are recalled for maintenance and patched up.
Ask your "buddy" where to find source codes, ain't no one on here going to point you in the right direction.. get real.
If you don't know how to find a source code yourself, then you won't be able to hack shit. Give up on whatever you're considering, this is out of your league.