no start

Wondering if anybody else has experienced the same or similar malfunctions and were able to identify the cause? Yesterday, while driving I lost volume control for the audio system; steering wheel and console controls had no effect, thankfully the volume was relatively low. Same day, same trip...

Yesterday, I drove for about an hour on an errand and parked the truck. About 15 minutes later I tried to start the truck - just got a single click out of the starter - no rotation. No electronic clicking or dimming of headlights with the starter selected. Tried tapping the starter, swapped...