Chirp when shifting under hard acceleration (1 Viewer)

[tylrdvs277]

Hello all,

I have 2008 4Runner V8 4WD. Recently, I noticed that, under hard acceleration, when the trans upshifts there’s a brief chirp/squeak that sounds almost the same as tire chirp.

I was due for a transmission flush, but that had no effect. I was wondering if anyone had any ideas.

I put this here because it may be applicable to 100 series cruisers.

Thanks for the help.

Tyler