2000 Chevy Silverado ABS Motor Chatter

Tiny
HOBO1261
  • MEMBER
  • 2000 CHEVROLET SILVERADO
Brakes problem
2000 Chevy Silverado V8 Four Wheel Drive Automatic 200k+ miles

My 2000 Silverado has given me 200,000+ miles and I can't complain. Recently my ABS light started coming on intermitently and I get a hard vibration/chattering noise from the ABS motor area. Wheel speed sensor is good, connections are clean, nothing seems loose.

Dealer says my ABS module is "going bad" - modules either work or don't work in my experience.

Any ideas what could be causing this?
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Tuesday, December 9th, 2008 AT 12:45 PM

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Tiny
DENNYP
  • EXPERT
If this only happens at low speed stops, (like in a parking lot) it is probably corrosion buildup under the front speed sensors. If it is just at random, it could be the module going out. Yes, they can have intermittent failures. You should monitor the front wheel speed data on a scan tool when the fault occurs. Look for the signal to drop out on one of the sensors.
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Thursday, December 11th, 2008 AT 1:37 PM

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