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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 08-27-2008, 09:18 PM   #1
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Yesterday my ABS and traction control light came on together for no apparent reason. When I restarted the car, they were off and have not come back on again (?) Is this a concern?

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Old 08-28-2008, 03:49 PM   #2
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FIRST!

i wouldn't worry.

do you know why those lights come on i mean what can trigger them to come on...
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Old 08-29-2008, 09:09 AM   #3
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If they are off and staying off, don't get worried. The usual causes to that would be a failing wheel speed sensor (read new hub). If it happened once, call it a glitch and smile if you don't see it again.
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Old 08-29-2008, 02:57 PM   #4
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thanks, it did come on again two days later. Is that an expensive repair?
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Old 08-29-2008, 02:59 PM   #5
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The toughest part is identifying which hub or part is bad. That might take a trip to the dealer and their usual $100 diagnostic fee. Then the part is around $80-100 (non dealer) plus labor.

Easy to swap on our cars though.
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Old 08-29-2008, 06:20 PM   #6
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Bah, prolly just some crud got between the magnet and the hub teeth.
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Old 08-30-2008, 08:16 AM   #7
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I just replaced both wheel speed sensors (one went, then the other) $157 each from NAPA.
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Old 09-02-2008, 01:14 PM   #8
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Quote:
Originally Posted by David SSE View Post
Yesterday my ABS and traction control light came on together for no apparent reason. When I restarted the car, they were off and have not come back on again (?) Is this a concern?
When those two specific lights come on together, the first thing to check is your brake fluid level. If there isn't enough fluid in the reservoir to support ABS cycling, you'll get those two warning lights together. (Yeah, it freaked me out when I saw those light up on mine; it was a great relief when the factory manual pointed me to the fluid level as a first step.)

As for why you only got the lights that one time (or just occasionally), you may be just on the brink of triggering the warning light, to the point that it matters what angle the car is tipped at when you park it, as far as whether the internal float will trigger the warning switch.
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