1998 Chevy Lumina brakes

Tiny
BSASS36
  • MEMBER
  • 1998 CHEVROLET LUMINA
1998 Chevy Lumina

the brakes barly work and when I push them in it makes a hissing noise almost like a vaccume leak and the noise comes from under the steering colume what could that be?
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Saturday, December 6th, 2008 AT 3:01 PM

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Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
You are correct about the sound of a vacuum leak.
The power booster for your brakes works off of vacuum.

It probably has a leak in the diaphragm.
It's the round thing the master cylinder is bolted to.
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Sunday, December 7th, 2008 AT 11:45 PM

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