1992 Chevy Silverado Hissing

1992 CHEVROLET SILVERADO
23,500 MILES • V8 • 2WD • AUTOMATIC
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MARIOROLANDO
  • MEMBER
  • 1 POST
When the brake pedal is pushed a hissing sound comes from the pushing rod inside the cabin, the brakes do not work properly, looks like an air leak from a rubber seal, How can this be fix? Can I get a repair kit or need to replace the unit?
Oct 5, 2010 at 9:20 PM
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MHPAUTOS
  • ✓Experienced Mechanic
  • 31,937 POSTS
Hi there,

It will be quicker and easier to replace the brake booster as a unit, you should be able to gt a re-co change over unit, check with your local parts retailer.

mark (mhpautos)
Feb 22, 2021 at 10:18 AM
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WRENCHTECH
  • ✓Experienced Mechanic
  • 20,760 POSTS
That hissing noise would indicate a vacuum leak within the brake booster and would require replacing it.
Feb 22, 2021 at 10:18 AM
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