No crank, no anything

GM truck does not have a remote starter.

Here is the whole story on this electrical or weird problem:

A few days ago I came home from town and pulled up in front of the garage and turned off the key. The motor kept on idling along like I hadn't turned off the key! I tried a few times turning the key off and on and it still idled right along. Then I happened to step on the brake pedal and the motor shut off! Next day started up truck and went to town. Went to one store and came out and tried to start, nothing happened. All the usual lights were lighted on the dash but nothing. Turned on headlights to see if the starter would dim them when trying to start, didn't dim at all. Towed truck home. Turned off key after putting transmission in P after towing and turned off key. Buzzer was going so took out key and buzzer still going, lights on dash on! Wiggled brake pedal and lights and buzzer went off! When wiggled brake pedal again same thing buzzer and dash lights. Took of battery cable. I have never heard of any thing like this in 50+ years has anyone else? Thanks, Jim Wiseman

Here is the answer to this mystery. My buddy has been a mechanic for 30 years so I took the truck to him. I told him about applying the brake and all the other symptoms I had. He took off the brake switch put on a new one and a coil that was burned out on acct of relays were open on acct of switch and the truck started up! Darnedest thing he ever saw in his experience. Truck is just fine now. JW