2001 Rodeo 3.2L V6 High Pitched Whine
 

First time posting here, just picked up this beautiful vehicle two weeks back. It has developed a very high pitched whining noise. This noise only occurs while in drive gears or reverse. I have an automatic transmission.

Short clip showing the sound while idling in gear.

I plan on doing the transmission fluid and filter tonight, just wanted to hear your guys' thoughts.

Cheers,

Dsevvv

Did you ever figure out what this was? Mine developed this noise yesterday and I have no idea where to begin.