Grinding Sound when cold PLEASE HELP - 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 03-09-2004, 02:27 PM   #11
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That'* the ABS self-test you hear there.
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Old 03-09-2004, 04:29 PM   #12
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Quote:
Originally Posted by fuddyduddy121
That'* the ABS self-test you hear there.
You talking to me, or Mr. JL?

Jay
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Old 03-09-2004, 04:41 PM   #13
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Both. All of us work the same on that one.
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Old 03-09-2004, 05:55 PM   #14
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My 92 applies the brakes for traction control. It is exactly the same noise as when i lock up the wheels. Because the brake is being applied on that wheel, the differential (only powering the easiest wheel to spin) transfers the power over to the other wheel, where there is hopefully traction. I have never heard of retarding the timing, could that be for higher speeds when it would be dangerous for the brakes to be applied?
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Old 03-09-2004, 09:00 PM   #15
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Quote:
Originally Posted by A Bonnie Canuck
I have never heard of retarding the timing, could that be for higher speeds when it would be dangerous for the brakes to be applied?

Its the second resort that the system is programed to do after it decides that the brakes just cant control it. I was starting on sheet ice one day and it just sat there spinning, the brake could not do anything to stop it. Then the engine took a wierd tone and no matter how hard I pushed the pedal it would not go above 2K. The car eventually got free, but it took a whole green light to do it.

That has happened only a few times that I remember, mostly brake application gets traction. I've never heard mine do the 14mph test.

Jay
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Old 03-09-2004, 11:18 PM   #16
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I believe they switched antilock systems in 1994 and then again in 1996. So not all of them may do the self test at 14 mph.
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