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thats what mine sounded like. sounds like a vaccumn type squeel? mine did it between shifts and took a long time to shift. as you can see in my sig. im putting another trans in. mine just got too hot. had a pcm forlesss cooler (junk). hope thats not your case, but exactly same noise. check the trans fluid color and hope you dont find any materials in there. in my case everything was burnt up. fluid was pitch black. it was the pump making the sound in mine. there was a lot of trash it was trying to pump
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