01 red pony

My '01 stang seems to make squealing sound when I really get on the throttle and I shift from 1st into 2nd.
I have an auto tranny and sometimes I manually shift the gears. It almost sounds like the tires barking because it does it right when it shifts. But i'm pretty sure its the belt sqealing, but it never does it any other time. I'm wanting to get you guys opinion on what can be done about it or if it could be something worse. The belt does feel like it has enough tension on it but i cant be 100% sure!

01WhiteGTVert

i have a 01 GT auto too and mine does it from3 to4 sometimes but i dont know why. but im getting my steeda underdrives tomorrow and ill see if it does it with those on.

dubarado

my 04 does it too... automatic... omly from time to time... but if I floor it from a roll and it shifts that's when it does it.

http://www.youtube.com/watch?v=h53GgFLlOdw