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ABS Problem, low speed engagement.

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by fierodough, Mar 17, 2007.

  1. fierodough

    fierodough Member

    Argh! Another bugg.. My ABS was dissabled on the truck and I thought it was fubared.. Today when giving it a tune-up I notice the harness was unplugged.

    Plugged it back in and got ABS! Too much ABS! Now when I'm nearing full stop the ABS engages no matter what surface I am on.

    Obviously why the dealer had it disconnected... What could be causing this? Wheel speed sensor? (Please tell me they are not built into the hubs...)

    Bad abs module?

    Is there a sensor on the brake pedle?

    Thanks!
    Eric
  2. 84fiero123

    84fiero123 Epic Member 5+ Years 1000 Posts Platinum Contributor


    Abs Module

    The dealer is not supposed to disconect that, if you have a safety inspection you will not pass.
  3. Cableguy

    Cableguy Epic Member 5+ Years ROTM Winner 1000 Posts

    I think that model year was rear abs only(I can't remember, yours) but I have heard mechanics doing this but not a dealership. Some people did not like the way back brakes acted. Have you checked that rear wheel cylinders are not leaking and axl seals?
  4. fierodough

    fierodough Member


    It's front and rear abs on my truck. no leaks anywhere. had brake fluid replaced.

    If I need to change the module, I'm in for it... The lines going in the module are sure to be seized. That means all new brake lines. ARGH!

    I had a similar problem with my s10 Jimmy, with taht truck it was a bad wheel speed sensor.

    Cheers!
    Eric

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