02 Avalanche ABS issue

Discussion in 'Chevy Avalanche Forum (Escalade EXT)' started by ArtO, Jul 10, 2014.

  1. ArtO

    ArtO Member

    I have a 02 Avalanche that the ABS activates for no apparent reason. Sometimes it will drive fine for 10-15 stops and then BAM ABS kicks in for a few stops and then its back to normal again. No dash lights have come on. Is this a sensor problem ?? If so, how do I know which one ??
    I recently put a new caliper on the drivers side front, the old one decided to seize up. Could it be related to this ??
    Any help or advise would be greatly appreciated.

  2. poncho62

    poncho62 Active Member 2 Years 100 Posts

    Its likely a sensor problem......Also, since the sensor is in the wheel bearing, chances are the wheel bearing is crapping out also. Any humming coming from the front wheel bearings?
  3. ArtO

    ArtO Member

    no sounds coming from the wheel bearings. i was figuring on a sensor. How do I tell which one it is ??
  4. poncho62

    poncho62 Active Member 2 Years 100 Posts

    I believe that a scanner that reads ABS codes should tell you....My cheapo scanner doesnt, probably not too expensive for a tech to hook one up
  5. thzpcs

    thzpcs Member

    How much pressure are you applying to the pedal to get the ABS to engage? If it's just doing it randomly, then it's definitely an issue with the sensors.
  6. ArtO

    ArtO Member

    Pretty much the same pressure on the pedal every time. It happens randomly at stop signs, in parking lots, sometimes just hitting the pedal lightly to slow down, not even stopping. I've just been driving the Silverado instead. Not sure when I'll have time to take it somewhere with a scanner. Working 2 jobs really sucks !!!
  7. Pikey

    Pikey Moderator Staff Member 5+ Years ROTM Winner 5000 Posts

    A scanner that reads abs codes will not help you unless the ABS light is on. You need a scan tool that is capable of reading sensor output or even graph the output.
  8. ArtO

    ArtO Member

    I put a new hub on last weekend and all is better. The truck now stops like its supposed to without the ABS kicking in. Thank you, to all, for the input & ideas.
  9. sbower1976

    sbower1976 Member

    what was wrong with the old hub ?

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