Are my brakes suppose to do that? - 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 03-06-2007, 09:52 PM   #1
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Default Are my brakes suppose to do that?

OK, heres the story I was on my way back to school from lunch the other day. It was wet out and I was driving a little too fast around a roundabout . So I had to get on the brakes kind of hard my front wheels locked up. I'm suppose to have ABS. Is this normal, that is, if you push the brakes to hard when ití* wet out will they lock up? If not what might the problem be?
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Old 03-06-2007, 10:08 PM   #2
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You would need to stomp them in a panic situation to honestly check them.
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Old 03-07-2007, 11:54 PM   #3
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well did they actually lock, or did they lock to then cause ABS to kick in?
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Old 03-08-2007, 07:06 AM   #4
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I'm pretty sure they locked up because i had the wheel turned some and i just kept going in a straight line and it did wasn't slowing down like it normally would it took a lot more time to slow the car down.

I was stepping on the breaks the yesterday and they were soild until the past a certian point, then they felt kinda crunchy. I don't know if that makes any sense but they just didn't feel solid after i past half way down or so on the pedal...
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Old 03-08-2007, 07:29 AM   #5
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That crunchiness was the ABS working. There'* a point at which our brakes will lock. The ABS should kick in during emergency stops. That'* why I mentioned the stomp and steer. If you are moving fast enough and stomp on them and ABS kicks in...you'll know.

The pedal will be moving and grooving under your foot and you'll need to keep applying more/constant pressure to stop the car.
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Old 03-08-2007, 09:03 PM   #6
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and about the brakes locking up more when they're wet...just about every GM i've driven with drums in the back lock easier when they're wet, and that goes away after a few stops
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Old 03-08-2007, 10:08 PM   #7
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Yeah the crunching was probably the ABS. Did you hear a loud noise that kind of sounded like a air compressor?
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Old 03-08-2007, 11:22 PM   #8
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Quote:
Did you hear a loud noise that kind of sounded like a air compressor?
I don't remember hear any sound like an air compressor, but then again i wasn't really paying any attention to any sound.

Another question, is the ABS always working or just when you step on the brakes hard
?
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Old 03-09-2007, 07:32 AM   #9
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The abs is always ready. It works when the PCM determines through it'* programming that you need assistance.
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Old 03-10-2007, 02:38 PM   #10
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Probably you should go somwhere where thre is no trafic and try the breaks out and see what it does. If the abs kicks in, (noise and pedal being pushed back), or not and what wheels lock up if they are. I had a similar issue having one of the rear wheels lock up and the abs didn't work properly. I changed the front wheel bearings with the abs sensonrs and everything is back to normal now. The sensor on the front wheel did't work properly and it was confusing the ABS.
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