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  1. #1
    Jr. Apprentice
    Join Date
    Aug 2011
    Long Island, NY

    Default ABS brake question

    Hey, everyone I have a 2004 Sierra 4WD Z71 package and I have a question about the brakes. Recently the brakes would occasionally pulse when slowing down, like the ABS pump is working. This happens on dry pavement with light to moderate braking pressure.

    Also, my wife says she hears a high pitched squeal on braking (I dont). I have abouty 37000 miles on the truck, which I've had for about 6 months now.

    Any ideas?
    2004 GMC Sierra SLT Z71, Truxedo Low Pro QT tonneau cover, Rhinoliner bed liner, Putco side rails, Weathertech window deflectors and floor mats, AMP Research bed extender, GMC cloth seat covers, light bar, lights and more to come.

  2. #2
    Sr. Apprentice
    Join Date
    Mar 2009
    Kalispell, Montana


    Sounds like warped rotors to me I get it occasionally in my '06 1500HD too.
    Kalispell, MT :zzz:

    2004 Chevy Suburban-Bone Stock
    2006 Chvey Silverado 1500HD

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