WHEEL SPEED SENSORS

  • Tiny
  • jda
  • 2001 Oldsmobile Alero
  • 4 CYL
  • FWD
  • manual
  • 98,000 miles

Abs and brake light on code reader says left side speed sensor no signal befor I change hub is there a way to check sensor 2001 olds alero with abs

Monday, March 7th, 2011 AT 12:40 AM

2 Answers

  • Tiny
  • caradiodoc
  • Expert
  • 24,902 posts

You would need an oscilloscope to view the signal. GM has had a huge problem with their ABS sensors. The sensor isn't actually the problem. A little normal play develops in the bearing. The tone ring moves a little and causes the signal to drop out. The only fix is to replace the bearing assembly.

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Monday, March 7th, 2011 AT 12:57 AM
  • Tiny
  • jda
  • Member

Thanks nice to know jda

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Monday, March 7th, 2011 AT 2:20 AM

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