Buzzing sound after shutting off

[Big_Horn]

Hello... Searched for forums and still didn't find the answer. I have a buzzing sound after shutting off the truck. doesn't happen all the time but when it does buzz, it goes on for a few minutes and then stops. haven't crawled under the truck to check it out yet. any ideas?? I have a 06 with 190k.

 

[B.G. Smith]

Some times I can hear the refrigerant bleeding down in the evaporator when I shut the engine off. bg

 

[Big_Horn]

Some times I can hear the refrigerant bleeding down in the evaporator when I shut the engine off. bg

i know what you are talking about. I hear that a lot. This is defiantly electrical in nature