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driveline clunk ?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by RAY, Apr 3, 2004.

  1. RAY

    RAY 1/2 ton status Premium Member

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    A have heard a clunk lately when I let off the gas. Does this sound like a slip yoke going bad, u joint or ring and pinion? It kinda feels like it is coming from somewhere around the t-case. It alson clunks when I shift from reverse to drive.

    Thanks,
    Ray
     
  2. vegas76k5

    vegas76k5 Registered Member

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    Mine was doing the same thing. I replaced both my rear u-joints and it solved it. Check them for play.
     
  3. Blue85

    Blue85 Troll Premium Member

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    Once U-joints are checked out, I would look at the differential. Could be a lot of wear in the spider gears or ring and pinion. Pretty common, actually.
     
  4. Can Can

    Can Can Pusher Man Staff Member Super Moderator

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    You might also want to double check that your crossmember and mounting bolts are tight.....
     
  5. BlazerGuy

    BlazerGuy 3/4 ton status

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    1. Check the U-joints.
    2. Check the tranny crossmember bolts
    3. Check tranny mount...is it the stock mushy rubber one?
    4. Last resort...check the U-bolt tightness...
     
  6. 4xcrazy

    4xcrazy 3/4 ton status

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    If you are talking about the pick up, also check out if it has one, most pick ups do, the center carrier bearing located on the middle crossmember. Those wear out and will bounce around when you let off the gas or hit the gas real hard.
     
  7. mouse

    mouse 1/2 ton status

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    a 203 TC can also cause some slop...
     

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