brakes giving way - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 10-23-2009, 06:44 PM   #1
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Default brakes giving way

when i brake to a stop sometimes my car will start moving again with the brake all the way on and then i will have to pump the break pedal to get it to stop again. does that mean my brake fluid line is leaking?
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Old 10-23-2009, 06:47 PM   #2
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Means you have air in the brake system. Check the brake fluid level and then bleed your brakes.
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Old 10-23-2009, 06:47 PM   #3
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alright thanks. this sounds like a dumb question but im 16 and dont kow much about cars, but how to you "bleed" brakes
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Old 10-23-2009, 06:48 PM   #4
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I'll add to what Dan has....check the brake fluid level, if it'* low, fill it, test the brakes. if they are mushy, then bleed them. Check all lines for leaks.
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Old 10-23-2009, 06:50 PM   #5
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Check this out on bleeding brakes https://www.gmforum.com/t284851/
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Old 10-23-2009, 07:00 PM   #6
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ok thanks. im going to do that tomorrow
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Old 10-23-2009, 07:54 PM   #7
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Usually that is a sign of an internally bypassing master cylinder. Ive seen it many times.

Seems peculiar to GM.
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