Brakes go almost to the floor - 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 05-14-2004, 11:25 AM   #1
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Default Brakes go almost to the floor

My brakes almost go to the floor and i know all of the pads are good because i just changed them. I did drive around with worn pads longer than i should have and i figured that when i changed my pads the problem would go away. Someone has suggueseted that it might be my master cylinder or a line. I know that it isnt leaking any fluid at all. Can someone help?
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Old 05-14-2004, 11:38 AM   #2
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It'* most likely your master cylinder. Has it ever been replaced on your car? They're notorious for failing on the Bonnevilles.
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Old 05-14-2004, 03:58 PM   #3
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I agree on the master cylinder. But have the brakes been bled?
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Old 05-14-2004, 04:04 PM   #4
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Same chit on my Aurora when the brakes failed....it was the master cylinder
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Old 05-14-2004, 04:25 PM   #5
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Had same prob man... it is definatly the MC... nothing else would do that with no leak.
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Old 05-14-2004, 05:08 PM   #6
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would the master cylinder going out cause the brake light to come on?
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Old 05-14-2004, 05:11 PM   #7
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I don't think a Master Cylinder that is failing would cause any MIL or Brake Light to go on EXCEPT if the fluid gets too low.
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Old 05-14-2004, 06:08 PM   #8
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Just did mine with the same symptoms but keep in mind that the rear brakes may be in need of adjustment if the adjuster is siezed. If the adjuster is good, just keep putting the parking brake on and off to adjust the rear brakes up. This will adjust the pedal sensitivity and engagement height of the brake pedal. I think this goes without saying but take care of this ASAP!
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