Brake problem on 2002 Pontiac Grand Prix

When I go to put on my brakes my system makes a farting noise and seems to fail for a couple seconds. My mechanic is lost just from the sound. I know a little bit about cars and havent ever heard this before. Anyone know what to checkout?

1 answer
I too have been having this exact problem with my 2002 Grand Prix and it never seems to do it when I get a mechanic or someone to ride with me. When it makes the noise, the ABS and TRAC OFF lights also come on. Do these light come on your's when you hear the farting noise and the brakes seem to fail.
I hope someone has an answer for this!!!!!