05" Yukon XL, Vibration at 49 and 70 MPH

Discussion in 'General Chevy & GM Tech Questions' started by Dan w, Jan 26, 2014.

  1. Dan w

    Dan w New Member

    I have a 2005 Yukon XL, The vibrates at 40 and 70 mph. U joints have been replaced the tires have been balanced and rotated. Occasionally and sporatically I hear a slapping noise in the undercarriage. Please Help! Thanks
     
  2. TRPLXL2

    TRPLXL2 Epic Member 5+ Years 1000 Posts

    Welcome to the club!!!

    Did you mark the driveshaft before you removed it? If not then it is out of position, the driveshaft is balanced and installed a certain way. As far as the slapping noise I don't know, hopefully someone else can chime in.
     
  3. Dan w

    Dan w New Member

    Thanks for the info, this shaft has yolks welded on both ends, so I done believe it can get out of time? One end bolts to the rear pinion, and one has a spline going it the transfer case.
     

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