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Crazy vibration

Discussion in 'Lowered & Urban Suspension' started by maxpayne23, Oct 3, 2011.

  1. maxpayne23

    maxpayne23 New Member

    I have a 99 suburban 1500 4x4 and it has a wild roar/vibration in the 60 to 70 mph range. I've replaced the tires, had them balanced and checked again. Did alignment and finally took it to sears to see if they could figure it out. Guy says it's the front diff. Not sure as I drained all the fluid and was dirty but no metal. Perhaps wheel bearings? I love the truck but damn I'm perplexed.
  2. maxpayne23

    maxpayne23 New Member

    I have a 99 suburban 1500 4x4 and it has a wild roar/vibration in the 60 to 70 mph range. I've replaced the tires, had them balanced and checked again. Did alignment and finally took it to sears to see if they could figure it out. Guy says it's the front diff. Not sure as I drained all the fluid and was dirty but no metal. Perhaps wheel bearings? I love the truck but damn I'm perplexed.
  3. murdog94

    murdog94 New Member 1000 Posts 100 Posts

    What shape are the Ujoints in? that could be it as well. without hearing the noise it is harder to diagnose but i would start with checking the U-joints and go from there

    ---------- Post added at 07:53 PM ---------- Previous post was at 07:51 PM ----------

    **threads merged please only one thread per topic. Thanks****
  4. maxpayne23

    maxpayne23 New Member

    They are quite old. I picked the truck up in a swap so I've been trying to fix it on my own. The former owner said he fixed everything himself and from what I've seen I'm not impressed. I'll pick up some u-joints and start there as well as going through and change all the fluids.

    ---------- Post added at 07:00 PM ---------- Previous post was at 06:59 PM ----------

    Sorry for the double posts. My computer is being used and I'm doing this via a mobile.
  5. silveradotrailblazer

    silveradotrailblazer New Member 1000 Posts 100 Posts

    If the trucks a 4X4 check the front CV joints after as Mike you look at the U-joints.
  6. murdog94

    murdog94 New Member 1000 Posts 100 Posts

    Also yes the front diff could be out but that would be a bit different and a wheel bearing starts off humming and just gets louder with speed

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