# Sonoma ABS warning light

**URL:** <https://community.cartalk.com/t/sonoma-abs-warning-light/43675>\
**Category:** Maintenance/Repairs\
**Tags:** sonoma, gmc\
**Created:** [February 2, 2010, 2:18am UTC](https://community.cartalk.com/t/sonoma-abs-warning-light/43675 "2010-02-02T02:18:03Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![couchgrouch](https://avatars.discourse-cdn.com/v4/letter/c/b77776/32.png) [@couchgrouch](https://community.cartalk.com/u/couchgrouch)\
**Post date:** [February 2, 2010, 2:18am UTC](https://community.cartalk.com/t/sonoma-abs-warning-light/43675/1 "2010-02-02T02:18:03Z")

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1995 Sonoma, 4.3L, 2wd. ABS light comes on when speedometer hits about 75mph. Light will go/stay off when key is turned off.  
  
 Any suggestions??  
  
 Thanks

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**Author:** ![tardis](https://avatars.discourse-cdn.com/v4/letter/t/f0a364/32.png) [@tardis](https://community.cartalk.com/u/tardis)\
**Post date:** [February 2, 2010, 2:25am UTC](https://community.cartalk.com/t/sonoma-abs-warning-light/43675/2 "2010-02-02T02:25:00Z")

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You probably have a fault with one or more of the wheel speed sensors.

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**Author:** ![couchgrouch](https://avatars.discourse-cdn.com/v4/letter/c/b77776/32.png) [@couchgrouch](https://community.cartalk.com/u/couchgrouch)\
**Post date:** [February 2, 2010, 5:50pm UTC](https://community.cartalk.com/t/sonoma-abs-warning-light/43675/3 "2010-02-02T17:50:13Z")

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I’ve never played with wheel speed sensors. Is this a job for a real mechanic or can I check/repair it myself? I’ve replaced brake rotors, discs, shoes, calipers- Is there a simple test/check I can do?

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**Author:** ![tardis](https://avatars.discourse-cdn.com/v4/letter/t/f0a364/32.png) [@tardis](https://community.cartalk.com/u/tardis)\
**Post date:** [February 2, 2010, 6:17pm UTC](https://community.cartalk.com/t/sonoma-abs-warning-light/43675/4 "2010-02-02T18:17:46Z")

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If you have to ask, then I suspect that you should take it somewhere, but not some chain store outfit.

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**Author:** ![couchgrouch](https://avatars.discourse-cdn.com/v4/letter/c/b77776/32.png) [@couchgrouch](https://community.cartalk.com/u/couchgrouch)\
**Post date:** [February 2, 2010, 9:42pm UTC](https://community.cartalk.com/t/sonoma-abs-warning-light/43675/5 "2010-02-02T21:42:51Z")

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Will do. Now, at least, I have something solid to go on. Thanks so much for the assist.  
Couchgrouch, Arkansas