2007 chevy silverado classic 4wd. Radio clock goes back to 12:00 each time

[t m]

the truck is shut off.? It keeps the channel presets, and remembers which channel it was on, but the clock goes back to 12:00 each time the truck is shut off. Anyone know what is up with that?

 

[Ric F]

Interesting that it keeps the channel presets, but I still would have to think that there is a power lead, (there may even be more than one power lead) that goes to the radio that should be a constant 12 volts that is improperly hooked up to a switched 12 volt source.