beeping driving me nuts - Page 2 - 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 02-12-2013, 10:08 PM   #11
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There are 2 possible sources for the beeping. Either a tight parking brake or the sensor on the master cylinder.

I discovered if I disconnected the connector on the master cylinder, the brake light went off.

Do this test to validate it is the sensor.

On mine, the fluid had drained below the sensor, but the light never turned on. I replaced the master cylinder and with a full reservoir, I still get the beeping.

I've been told a few panic stops could fix it. It has not.

I need to find some time to return the new master cylinder and replace it since it appears to be a bad sensor.
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