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  1. #1

    Default 2001 Blazer 4x4 DS front brake pulsation

    Everytime I apply the brake, there is a pulsation that appears to come from the DS front. Took off the tire to inspect and couldn't see anything visible. Tires were recently rotated.

    Thanks for the help!

    amos

  2. #2

    Default

    Quote Originally Posted by amos1 View Post
    Everytime I apply the brake, there is a pulsation that appears to come from the DS front. Took off the tire to inspect and couldn't see anything visible. Tires were recently rotated.

    Thanks for the help!

    amos

    if you feel the pedal go up and down when braking most likely its warped from rotors

    2003 Z71 Silverado LS
    Access roll up cover
    Bed Rails
    Billet Grill insert
    Bed Rug
    CB with PA system
    Waiting to be installed
    Two 8in RF HX2 punch( would have 12s but they got stolen)

  3. #3
    Legend

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    Default

    ^^^Warped rotors x2
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

  4. #4

    Default

    Thanks Z71 guy & vncj96! The rotors were installed last November after the truck was purchased. I think that's kinda fast for them to warp. Perhaps the quality of the rotors wasn't that good? Other factors??

    Amos

  5. #5

    Default

    its very posible they put in a low grade rotor i always use napa ultra premium rotors, poor quality pads will cause them to warp, i recommend wagner thermo quiet or monroe semi metalic pads

    2003 Z71 Silverado LS
    Access roll up cover
    Bed Rails
    Billet Grill insert
    Bed Rug
    CB with PA system
    Waiting to be installed
    Two 8in RF HX2 punch( would have 12s but they got stolen)

  6. #6

    Default

    Did you wash the truck right after getting home just before this started? I had machined my rotors perfect, than like a fool washed the truck one day before they cooled. Killed them. When you spray cold water through the wheels and hit the hot rotors, you rapidly cool one side causing the warping.
    When you hear hoofbeats, look for horses not zebras.

  7. #7

    Default

    Quote Originally Posted by 2COR517 View Post
    Did you wash the truck right after getting home just before this started? I had machined my rotors perfect, than like a fool washed the truck one day before they cooled. Killed them. When you spray cold water through the wheels and hit the hot rotors, you rapidly cool one side causing the warping.
    Not too sure if the truck was washed or not, but that's definitely good advice. Thanks! Took it to the shop that did the front brakes. They remachined the front left under warranty but there was still pulsation after the road test. After inspecting the rear, the rotors were way out of spec, so guess what I'll be doing this weekend! Thanks guys!

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