In attempting to remove my radio I proceeded as above. I have little thin discs instead of nuts that lock the switches and radio in, which are turned by means of snap ring pliers. Three of the four, including the two for the radio came out quite easily, but the fourth, right above the radio, for the A/C switch, will not budge. When it got to the point that I thought I might break my snap ring pliers I switched to needle nose vise-grips. Still no luck. I will try some penetrating oil or Coke and if that doesn't do it I might try to file flats on the disc to get a better bite, but has anyone experienced this and/or have another idea?