Chevy volt strange noise

Chevy Volt has a strange Noise every time when gasoline engine goes off

[@Kay-bw4ps]

What is the problem??

[@Icey12354]

I have the same noise, did you find the problem?

[@gogakhulordava]

same 🖐️

[@-8_8-]

This may be the same noise my gen 1 makes if I hit the gas then take my foot off.

[@ViolaOvipara]

I HAVE THE SAME ISSUE! Please tell me if you were able to fix it

[@apersonyoudontknow3346]

That’s the tensioner pulley

[@apersonyoudontknow3346]

Prob a bad baring

[@jimmykelly2809]

Mice