The EZ-Out works on auto screws/bolts but they generally are a lot bigger than the tiny 6x48 base screws. There are EZ-Outs made that small, but they do break easily. (Voice of experience here.) In my experience, if tricks like heating or freezing don't work, drilling with a minor diameter drill is the best route. Then you pick out the threads or use a 6x48 tap to clean up.
Jim
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