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Discussion Starter #1 (Edited)
i purchased my gto with 20 000 miles on it,when i start the car and put it i n drive and apply the brakes there is like wind noise hard to describe not very loud dough but noticeable,kinda like a whistle ,when i get out of the car i cant hear nothing its sound like the pedal or something ,Does anyone know anything about it?
 

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Probably the anti-lock braking system checking itself. Making a brief whirring sound.

Also, the hydraulic system makes a barely audible sighing noise every time you touch the brakes.

Either that or you fart every time you drive off in your GTO.
 

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I can tell you the brake fluid that comes with the GTO's is garbage.
Flush your system and replace it with Valvoline Synthetic Brake Fluid....big difference in performance and smoothness.....with the crap that comes from the factory you are probably hearing a valve that is full of junk......
 
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