Mclovin23

iTrader: (1)

Just got my 06 cobalt ss/sc a few days ago and just was giving it a little for the first time and when i got up to around 120 or so i heard a strange whining/screaching sound and it sounded like it was under the passenger seat. once i slowed down it went away but i have no idea what it was. My friend said it could have been maybe a clogged cat and the previous driver prolly never got the car up there. does that sound right or is there something else to worry about?