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Humming Dif

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by K5Psycho, Aug 3, 2002.

  1. K5Psycho

    K5Psycho Registered Member

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    ok i just put in my 700r4 on my 87 blazer and i took it on I40 around 45 to 70 MPH i hear a himming sound from the back of truck i am thinking if it is the U joints or the dif
    also around 70mph it starts to vibrate alot ? any thoughts let me know
    thanks
     
  2. Sandman

    Sandman 3/4 ton status Author

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    U-joints would be the first thing to look at. Mabey double check all of the bolts. I know I've missed them.
     
  3. K5Psycho

    K5Psycho Registered Member

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    what?
     

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