I have a 2000 Z28 . I have a problem with the radio and power windows. While driving the car and listing to the radio all of a sudden the radio will go off and the power windows will stop working. Then about 1 min or less the power comes back on and the radio will work and the windows will work. My mechanic thought he fixed the problem by replacing the ignition switch under the dash. This did not correct the problem. Please help!!! Any advice is greatly appreciated We have been working on this for about 3 weeks now and have still not found a solution. So any help would be wonderful!!