2009 Cadillac brake issue

Discussion in 'Domestics' started by no when too, Feb 13, 2017.

  1. no when too

    no when too Newbie

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    Please fill out the following to ask a question.

    MAKE/B]: Cadillac
    MODEL: DTS
    YEAR: 2009
    MILES: 78000
    ENGINE: 4.6L
    DESCRIBE ISSUE....The Rotors on this car are warped again. I had the front rotors turned about 30000 mile ago and now I am experiencing pulsing brakes again when I apply the brake. I checked the run out on the front and rear rotor and found the front passenger and both rear rotors have about .010 run out. The front driver side is good with only .0005 run out. My question is when purchasing new rotors what is the different between some of them on the market? I see some state they are high carbon and have a higher price tag. I don't know if that's the thing to buy or not.

    Thanks?????
     
  2. nickb2

    nickb2 Wrench. I help when I can

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    If I read right, my best advice is to go with 4 new rotors from napa. The best I have found are the ultra premium for those caddies. Once rotors have turned once on the lathe, throw away.

    here is a link.

    http://www.napabrakes.com/magnoliaPublic/home/products/rotors/ultra-premium.html

    If you don't have a napa close by, I'm pretty sure your local autozone will have them in stock.

    I have had very good success with these rotors on client cars. Hardly ever a come back.
     
  3. nickb2

    nickb2 Wrench. I help when I can

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    Here is a snapshot of minimum front and rear specs,

    Hope this helps, you will need a micro meter.;)

    Screenshot (52).png
     
  4. nickb2

    nickb2 Wrench. I help when I can

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    Usually, they are polymer coated.
     
  5. nickb2

    nickb2 Wrench. I help when I can

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    So again, my long response is. Never fuss with caddy rotors of this type year, once you turn them, they are already shot.
     
  6. nickb2

    nickb2 Wrench. I help when I can

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    The cost of removing them, then turning them, then reinstalling is not worth it in the long run, and your question just proof in the pudding of what I am trying to say.
     
  7. nickb2

    nickb2 Wrench. I help when I can

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    Are you from canada or the US?
     
  8. nickb2

    nickb2 Wrench. I help when I can

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    Once the rotors are blue, suspect calipers, very common on those rides.
     
    Last edited: Feb 13, 2017
  9. nickb2

    nickb2 Wrench. I help when I can

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    I have fixed some very high end cars in my life, and all applicable advice is the same.

    I don't know why exactly, but caddilac sucks large in the caliper dept and general brake design. So ultra high end brake parts are the way to go. Not the cheap stuff you see on e-bay, those are a gimmick and not worth the time and grief.
     
  10. nickb2

    nickb2 Wrench. I help when I can

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    Forgot to mention, the link I gave, those rotors are damped iron, not carbon.

    The carbon rotors suck for long applications, are only good for race tracks, which I assume you are not doing, seeing the miles of the car.
     
    Last edited: Feb 13, 2017
  11. no when too

    no when too Newbie

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    Thanks Nick, I am in the USA. I will check them out and see what I can get. There are Napa stores here

    Thanks again!!!!!
     
  12. big al

    big al Hero Member

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    Yep, toss those rotors in the scrap pile. Cheap steel coupled with todays driving habits and they are doomed for failure, especially after removing material from them. I usually dont turn or have them turned anymore, my only recommendation is to burnish the pads and rotors.
     
  13. jd

    jd Hero Member

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    I haven't worked on Cadillacs, but from other experience I'll suggest NEW Brake Hoses. Hoses can fail internally, creating a restriction. That restriction may allow Apply pressure to get to the Calipers, but keep fluid from releasing all its pressure when you release the brakes.
     
  14. no when too

    no when too Newbie

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    Thanks guys I installed the Napa rotors yesterday and I am glad to report the problem has been resolved. Thanks for the input.
     
  15. jd

    jd Hero Member

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    Everybody who's here is here wanting to help. There are many who know a lot and willing to share it. nickb2 is one of the best. The man deserves a Title. Maybe I should start a poll: Ninja of the North?
     

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